Merge "Minor changes on LocusId APIs."
diff --git a/api/current.txt b/api/current.txt
index 62530a9..d8ec778 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -14156,6 +14156,7 @@
     method @Nullable public android.graphics.ImageDecoder.OnPartialImageListener getOnPartialImageListener();
     method @Nullable public android.graphics.PostProcessor getPostProcessor();
     method public boolean isDecodeAsAlphaMaskEnabled();
+    method public static boolean isMimeTypeSupported(@NonNull String);
     method public boolean isMutableRequired();
     method public boolean isUnpremultipliedRequired();
     method public void setAllocator(int);
@@ -16797,6 +16798,7 @@
 
   public abstract static class CameraManager.AvailabilityCallback {
     ctor public CameraManager.AvailabilityCallback();
+    method public void onCameraAccessPrioritiesChanged();
     method public void onCameraAvailable(@NonNull String);
     method public void onCameraUnavailable(@NonNull String);
   }
@@ -22857,7 +22859,6 @@
     method public float getBearing();
     method public float getBearingAccuracyDegrees();
     method public long getElapsedRealtimeNanos();
-    method public long getElapsedRealtimeUncertaintyNanos();
     method public android.os.Bundle getExtras();
     method public double getLatitude();
     method public double getLongitude();
@@ -22870,7 +22871,6 @@
     method public boolean hasAltitude();
     method public boolean hasBearing();
     method public boolean hasBearingAccuracy();
-    method public boolean hasElapsedRealtimeUncertaintyNanos();
     method public boolean hasSpeed();
     method public boolean hasSpeedAccuracy();
     method public boolean hasVerticalAccuracy();
@@ -22886,7 +22886,6 @@
     method public void setBearing(float);
     method public void setBearingAccuracyDegrees(float);
     method public void setElapsedRealtimeNanos(long);
-    method public void setElapsedRealtimeUncertaintyNanos(long);
     method public void setExtras(android.os.Bundle);
     method public void setLatitude(double);
     method public void setLongitude(double);
@@ -23570,7 +23569,6 @@
     method @Deprecated public void addOnRoutingChangedListener(android.media.AudioTrack.OnRoutingChangedListener, android.os.Handler);
     method public int attachAuxEffect(int);
     method @NonNull public android.media.VolumeShaper createVolumeShaper(@NonNull android.media.VolumeShaper.Configuration);
-    method @Deprecated public static void deprecateStreamTypeForPlayback(int, @NonNull String, @NonNull String) throws java.lang.IllegalArgumentException;
     method protected void finalize();
     method public void flush();
     method @NonNull public android.media.AudioAttributes getAudioAttributes();
@@ -23696,12 +23694,12 @@
   }
 
   public class CallbackDataSourceDesc extends android.media.DataSourceDesc {
-    method public android.media.DataSourceCallback getDataSourceCallback();
+    method @NonNull public android.media.DataSourceCallback getDataSourceCallback();
   }
 
   public static class CallbackDataSourceDesc.Builder extends android.media.DataSourceDesc.BuilderBase<android.media.CallbackDataSourceDesc.Builder> {
     ctor public CallbackDataSourceDesc.Builder();
-    ctor public CallbackDataSourceDesc.Builder(android.media.CallbackDataSourceDesc);
+    ctor public CallbackDataSourceDesc.Builder(@Nullable android.media.CallbackDataSourceDesc);
     method @NonNull public android.media.CallbackDataSourceDesc build();
     method @NonNull public android.media.CallbackDataSourceDesc.Builder setDataSource(@NonNull android.media.DataSourceCallback);
   }
@@ -23761,12 +23759,12 @@
   public abstract class DataSourceCallback implements java.io.Closeable {
     ctor public DataSourceCallback();
     method public abstract long getSize() throws java.io.IOException;
-    method public abstract int readAt(long, byte[], int, int) throws java.io.IOException;
+    method public abstract int readAt(long, @NonNull byte[], int, int) throws java.io.IOException;
   }
 
   public class DataSourceDesc {
     method public long getEndPosition();
-    method public String getMediaId();
+    method @Nullable public String getMediaId();
     method public long getStartPosition();
     field public static final long LONG_MAX_TIME_MS = 576460752303423L; // 0x20c49ba5e353fL
     field public static final long POSITION_UNKNOWN = 576460752303423L; // 0x20c49ba5e353fL
@@ -23774,7 +23772,7 @@
 
   protected static class DataSourceDesc.BuilderBase<T extends android.media.DataSourceDesc.BuilderBase> {
     method @NonNull public T setEndPosition(long);
-    method @NonNull public T setMediaId(String);
+    method @NonNull public T setMediaId(@Nullable String);
     method @NonNull public T setStartPosition(long);
   }
 
@@ -23983,13 +23981,13 @@
   public class FileDataSourceDesc extends android.media.DataSourceDesc {
     method public long getLength();
     method public long getOffset();
-    method public android.os.ParcelFileDescriptor getParcelFileDescriptor();
+    method @NonNull public android.os.ParcelFileDescriptor getParcelFileDescriptor();
     field public static final long FD_LENGTH_UNKNOWN = 576460752303423487L; // 0x7ffffffffffffffL
   }
 
   public static class FileDataSourceDesc.Builder extends android.media.DataSourceDesc.BuilderBase<android.media.FileDataSourceDesc.Builder> {
     ctor public FileDataSourceDesc.Builder();
-    ctor public FileDataSourceDesc.Builder(android.media.FileDataSourceDesc);
+    ctor public FileDataSourceDesc.Builder(@Nullable android.media.FileDataSourceDesc);
     method @NonNull public android.media.FileDataSourceDesc build();
     method @NonNull public android.media.FileDataSourceDesc.Builder setDataSource(@NonNull android.os.ParcelFileDescriptor);
     method @NonNull public android.media.FileDataSourceDesc.Builder setDataSource(@NonNull android.os.ParcelFileDescriptor, long, long);
@@ -25327,7 +25325,6 @@
     method public static android.media.MediaPlayer create(android.content.Context, int);
     method public static android.media.MediaPlayer create(android.content.Context, int, android.media.AudioAttributes, int);
     method @NonNull public android.media.VolumeShaper createVolumeShaper(@NonNull android.media.VolumeShaper.Configuration);
-    method @Deprecated public static void deprecateStreamTypeForPlayback(int, @NonNull String, @NonNull String) throws java.lang.IllegalArgumentException;
     method public void deselectTrack(int) throws java.lang.IllegalStateException;
     method protected void finalize();
     method public int getAudioSessionId();
@@ -25541,16 +25538,16 @@
   }
 
   public class MediaPlayer2 implements android.media.AudioRouting java.lang.AutoCloseable {
-    ctor public MediaPlayer2(android.content.Context);
-    method public void addOnRoutingChangedListener(android.media.AudioRouting.OnRoutingChangedListener, android.os.Handler);
-    method public Object attachAuxEffect(int);
+    ctor public MediaPlayer2(@NonNull android.content.Context);
+    method public void addOnRoutingChangedListener(@NonNull android.media.AudioRouting.OnRoutingChangedListener, @Nullable android.os.Handler);
+    method @NonNull public Object attachAuxEffect(int);
     method public boolean cancelCommand(@NonNull Object);
     method public void clearDrmEventCallback();
-    method public Object clearNextDataSources();
+    method @NonNull public Object clearNextDataSources();
     method public void clearPendingCommands();
     method public void close();
-    method public Object deselectTrack(int);
-    method public Object deselectTrack(@NonNull android.media.DataSourceDesc, int);
+    method @NonNull public Object deselectTrack(int);
+    method @NonNull public Object deselectTrack(@NonNull android.media.DataSourceDesc, int);
     method @NonNull public android.media.AudioAttributes getAudioAttributes();
     method public int getAudioSessionId();
     method public long getBufferedPosition();
@@ -25560,11 +25557,11 @@
     method public long getDuration();
     method public long getDuration(@NonNull android.media.DataSourceDesc);
     method public float getMaxPlayerVolume();
-    method public android.os.PersistableBundle getMetrics();
+    method @Nullable public android.os.PersistableBundle getMetrics();
     method @NonNull public android.media.PlaybackParams getPlaybackParams();
     method public float getPlayerVolume();
-    method public android.media.AudioDeviceInfo getPreferredDevice();
-    method public android.media.AudioDeviceInfo getRoutedDevice();
+    method @Nullable public android.media.AudioDeviceInfo getPreferredDevice();
+    method @Nullable public android.media.AudioDeviceInfo getRoutedDevice();
     method public int getSelectedTrack(int);
     method public int getSelectedTrack(@NonNull android.media.DataSourceDesc, int);
     method public int getState();
@@ -25572,37 +25569,37 @@
     method @Nullable public android.media.MediaTimestamp getTimestamp();
     method @NonNull public java.util.List<android.media.MediaPlayer2.TrackInfo> getTrackInfo();
     method @NonNull public java.util.List<android.media.MediaPlayer2.TrackInfo> getTrackInfo(@NonNull android.media.DataSourceDesc);
-    method public android.util.Size getVideoSize();
+    method @NonNull public android.util.Size getVideoSize();
     method public boolean isLooping();
-    method public Object loopCurrent(boolean);
-    method public Object notifyWhenCommandLabelReached(@NonNull Object);
-    method public Object pause();
-    method public Object play();
-    method public Object prepare();
+    method @NonNull public Object loopCurrent(boolean);
+    method @NonNull public Object notifyWhenCommandLabelReached(@NonNull Object);
+    method @NonNull public Object pause();
+    method @NonNull public Object play();
+    method @NonNull public Object prepare();
     method public void registerEventCallback(@NonNull java.util.concurrent.Executor, @NonNull android.media.MediaPlayer2.EventCallback);
-    method public void removeOnRoutingChangedListener(android.media.AudioRouting.OnRoutingChangedListener);
+    method public void removeOnRoutingChangedListener(@NonNull android.media.AudioRouting.OnRoutingChangedListener);
     method public void reset();
-    method public Object seekTo(long);
-    method public Object seekTo(long, int);
-    method public Object selectTrack(int);
-    method public Object selectTrack(@NonNull android.media.DataSourceDesc, int);
-    method public Object setAudioAttributes(@NonNull android.media.AudioAttributes);
-    method public Object setAudioSessionId(int);
-    method public Object setAuxEffectSendLevel(float);
-    method public Object setDataSource(@NonNull android.media.DataSourceDesc);
-    method public Object setDisplay(android.view.SurfaceHolder);
+    method @NonNull public Object seekTo(long);
+    method @NonNull public Object seekTo(long, int);
+    method @NonNull public Object selectTrack(int);
+    method @NonNull public Object selectTrack(@NonNull android.media.DataSourceDesc, int);
+    method @NonNull public Object setAudioAttributes(@NonNull android.media.AudioAttributes);
+    method @NonNull public Object setAudioSessionId(int);
+    method @NonNull public Object setAuxEffectSendLevel(float);
+    method @NonNull public Object setDataSource(@NonNull android.media.DataSourceDesc);
+    method @NonNull public Object setDisplay(@Nullable android.view.SurfaceHolder);
     method public void setDrmEventCallback(@NonNull java.util.concurrent.Executor, @NonNull android.media.MediaPlayer2.DrmEventCallback);
-    method public Object setNextDataSource(@NonNull android.media.DataSourceDesc);
-    method public Object setNextDataSources(@NonNull java.util.List<android.media.DataSourceDesc>);
-    method public Object setPlaybackParams(@NonNull android.media.PlaybackParams);
-    method public Object setPlayerVolume(float);
-    method public boolean setPreferredDevice(android.media.AudioDeviceInfo);
-    method public Object setScreenOnWhilePlaying(boolean);
-    method public Object setSurface(android.view.Surface);
-    method public Object setSyncParams(@NonNull android.media.SyncParams);
-    method public Object setWakeLock(@NonNull android.os.PowerManager.WakeLock);
-    method public Object skipToNext();
-    method public void unregisterEventCallback(android.media.MediaPlayer2.EventCallback);
+    method @NonNull public Object setNextDataSource(@NonNull android.media.DataSourceDesc);
+    method @NonNull public Object setNextDataSources(@NonNull java.util.List<android.media.DataSourceDesc>);
+    method @NonNull public Object setPlaybackParams(@NonNull android.media.PlaybackParams);
+    method @NonNull public Object setPlayerVolume(float);
+    method public boolean setPreferredDevice(@Nullable android.media.AudioDeviceInfo);
+    method @NonNull public Object setScreenOnWhilePlaying(boolean);
+    method @NonNull public Object setSurface(@Nullable android.view.Surface);
+    method @NonNull public Object setSyncParams(@NonNull android.media.SyncParams);
+    method @NonNull public Object setWakeLock(@NonNull android.os.PowerManager.WakeLock);
+    method @NonNull public Object skipToNext();
+    method public void unregisterEventCallback(@NonNull android.media.MediaPlayer2.EventCallback);
     field public static final int CALL_COMPLETED_ATTACH_AUX_EFFECT = 1; // 0x1
     field public static final int CALL_COMPLETED_CLEAR_NEXT_DATA_SOURCES = 30; // 0x1e
     field public static final int CALL_COMPLETED_DESELECT_TRACK = 2; // 0x2
@@ -25737,8 +25734,8 @@
   }
 
   public static class MediaPlayer2.TrackInfo {
-    method public android.media.MediaFormat getFormat();
-    method public String getLanguage();
+    method @Nullable public android.media.MediaFormat getFormat();
+    method @Nullable public String getLanguage();
     method public int getTrackType();
     field public static final int MEDIA_TRACK_TYPE_AUDIO = 2; // 0x2
     field public static final int MEDIA_TRACK_TYPE_METADATA = 5; // 0x5
@@ -26422,7 +26419,6 @@
     ctor @Deprecated public SoundPool(int, int, int);
     method public final void autoPause();
     method public final void autoResume();
-    method @Deprecated public static void deprecateStreamTypeForPlayback(int, @NonNull String, @NonNull String) throws java.lang.IllegalArgumentException;
     method protected void finalize();
     method public int load(String, int);
     method public int load(android.content.Context, int, int);
@@ -26618,15 +26614,15 @@
   }
 
   public class UriDataSourceDesc extends android.media.DataSourceDesc {
-    method public android.content.Context getContext();
-    method public java.util.List<java.net.HttpCookie> getCookies();
-    method public java.util.Map<java.lang.String,java.lang.String> getHeaders();
-    method public android.net.Uri getUri();
+    method @NonNull public android.content.Context getContext();
+    method @Nullable public java.util.List<java.net.HttpCookie> getCookies();
+    method @Nullable public java.util.Map<java.lang.String,java.lang.String> getHeaders();
+    method @NonNull public android.net.Uri getUri();
   }
 
   public static class UriDataSourceDesc.Builder extends android.media.DataSourceDesc.BuilderBase<android.media.UriDataSourceDesc.Builder> {
     ctor public UriDataSourceDesc.Builder();
-    ctor public UriDataSourceDesc.Builder(android.media.UriDataSourceDesc);
+    ctor public UriDataSourceDesc.Builder(@Nullable android.media.UriDataSourceDesc);
     method @NonNull public android.media.UriDataSourceDesc build();
     method @NonNull public android.media.UriDataSourceDesc.Builder setDataSource(@NonNull android.content.Context, @NonNull android.net.Uri);
     method @NonNull public android.media.UriDataSourceDesc.Builder setDataSource(@NonNull android.content.Context, @NonNull android.net.Uri, @Nullable java.util.Map<java.lang.String,java.lang.String>, @Nullable java.util.List<java.net.HttpCookie>);
@@ -28981,6 +28977,7 @@
     field public static final int NET_CAPABILITY_IA = 7; // 0x7
     field public static final int NET_CAPABILITY_IMS = 4; // 0x4
     field public static final int NET_CAPABILITY_INTERNET = 12; // 0xc
+    field public static final int NET_CAPABILITY_MCX = 23; // 0x17
     field public static final int NET_CAPABILITY_MMS = 0; // 0x0
     field public static final int NET_CAPABILITY_NOT_CONGESTED = 20; // 0x14
     field public static final int NET_CAPABILITY_NOT_METERED = 11; // 0xb
@@ -38420,7 +38417,8 @@
     method @Nullable public static android.net.Uri getDocumentUri(@NonNull android.content.Context, @NonNull android.net.Uri);
     method public static android.net.Uri getMediaScannerUri();
     method @Nullable public static android.net.Uri getMediaUri(@NonNull android.content.Context, @NonNull android.net.Uri);
-    method public static String getVersion(android.content.Context);
+    method @NonNull public static String getVersion(@NonNull android.content.Context);
+    method @NonNull public static String getVersion(@NonNull android.content.Context, @NonNull String);
     method @NonNull public static String getVolumeName(@NonNull android.net.Uri);
     method @NonNull public static android.net.Uri setIncludePending(@NonNull android.net.Uri);
     method @NonNull public static android.net.Uri setRequireOriginal(@NonNull android.net.Uri);
@@ -45146,8 +45144,8 @@
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getImei();
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getImei(int);
     method @RequiresPermission(anyOf={android.Manifest.permission.READ_PHONE_STATE, android.Manifest.permission.READ_SMS, android.Manifest.permission.READ_PHONE_NUMBERS}) public String getLine1Number();
-    method public String getManufacturerCode();
-    method public String getManufacturerCode(int);
+    method @Nullable public String getManufacturerCode();
+    method @Nullable public String getManufacturerCode(int);
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getMeid();
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getMeid(int);
     method public String getMmsUAProfUrl();
@@ -45174,8 +45172,8 @@
     method public int getSimState();
     method public int getSimState(int);
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") public String getSubscriberId();
-    method public String getTypeAllocationCode();
-    method public String getTypeAllocationCode(int);
+    method @Nullable public String getTypeAllocationCode();
+    method @Nullable public String getTypeAllocationCode(int);
     method @RequiresPermission("android.permission.READ_PRIVILEGED_PHONE_STATE") @NonNull public java.util.List<android.telephony.UiccCardInfo> getUiccCardsInfo();
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVisualVoicemailPackageName();
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getVoiceMailAlphaTag();
@@ -45471,6 +45469,7 @@
     field public static final int TYPE_HIPRI = 16; // 0x10
     field public static final int TYPE_IA = 256; // 0x100
     field public static final int TYPE_IMS = 64; // 0x40
+    field public static final int TYPE_MCX = 1024; // 0x400
     field public static final int TYPE_MMS = 2; // 0x2
     field public static final int TYPE_SUPL = 4; // 0x4
   }
@@ -45560,7 +45559,7 @@
   }
 
   public class EuiccManager {
-    method public android.telephony.euicc.EuiccManager createForCardId(int);
+    method @NonNull public android.telephony.euicc.EuiccManager createForCardId(int);
     method @RequiresPermission("android.permission.WRITE_EMBEDDED_SUBSCRIPTIONS") public void deleteSubscription(int, android.app.PendingIntent);
     method @RequiresPermission("android.permission.WRITE_EMBEDDED_SUBSCRIPTIONS") public void downloadSubscription(android.telephony.euicc.DownloadableSubscription, boolean, android.app.PendingIntent);
     method @Nullable public String getEid();
@@ -47113,7 +47112,7 @@
 
   public static class LineHeightSpan.Standard implements android.text.style.LineHeightSpan android.text.ParcelableSpan {
     ctor public LineHeightSpan.Standard(@Px @IntRange(from=1) int);
-    ctor public LineHeightSpan.Standard(android.os.Parcel);
+    ctor public LineHeightSpan.Standard(@NonNull android.os.Parcel);
     method public void chooseHeight(@NonNull CharSequence, int, int, int, int, @NonNull android.graphics.Paint.FontMetricsInt);
     method public int describeContents();
     method @Px public int getHeight();
@@ -57333,7 +57332,7 @@
     method @NonNull public android.view.textclassifier.TextClassifier getTextClassifier();
     method public final android.content.res.ColorStateList getTextColors();
     method @Nullable public android.graphics.drawable.Drawable getTextCursorDrawable();
-    method public android.text.TextDirectionHeuristic getTextDirectionHeuristic();
+    method @NonNull public android.text.TextDirectionHeuristic getTextDirectionHeuristic();
     method @NonNull public java.util.Locale getTextLocale();
     method @NonNull @Size(min=1) public android.os.LocaleList getTextLocales();
     method @NonNull public android.text.PrecomputedText.Params getTextMetricsParams();
diff --git a/api/system-current.txt b/api/system-current.txt
index e8eca21..752640b 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -181,6 +181,7 @@
     field public static final String SHUTDOWN = "android.permission.SHUTDOWN";
     field public static final String STOP_APP_SWITCHES = "android.permission.STOP_APP_SWITCHES";
     field public static final String SUBSTITUTE_NOTIFICATION_APP_NAME = "android.permission.SUBSTITUTE_NOTIFICATION_APP_NAME";
+    field public static final String SUBSTITUTE_SHARE_TARGET_APP_NAME_AND_ICON = "android.permission.SUBSTITUTE_SHARE_TARGET_APP_NAME_AND_ICON";
     field public static final String SUSPEND_APPS = "android.permission.SUSPEND_APPS";
     field public static final String TETHER_PRIVILEGED = "android.permission.TETHER_PRIVILEGED";
     field public static final String TV_INPUT_HARDWARE = "android.permission.TV_INPUT_HARDWARE";
@@ -951,7 +952,7 @@
 
   public final class ClassificationsRequest implements android.os.Parcelable {
     method public int describeContents();
-    method @Nullable public android.os.Bundle getExtras();
+    method @NonNull public android.os.Bundle getExtras();
     method @NonNull public java.util.List<android.app.contentsuggestions.ContentSelection> getSelections();
     method public void writeToParcel(android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.app.contentsuggestions.ClassificationsRequest> CREATOR;
@@ -959,8 +960,8 @@
 
   public static final class ClassificationsRequest.Builder {
     ctor public ClassificationsRequest.Builder(@NonNull java.util.List<android.app.contentsuggestions.ContentSelection>);
-    method public android.app.contentsuggestions.ClassificationsRequest build();
-    method public android.app.contentsuggestions.ClassificationsRequest.Builder setExtras(@NonNull android.os.Bundle);
+    method @NonNull public android.app.contentsuggestions.ClassificationsRequest build();
+    method @NonNull public android.app.contentsuggestions.ClassificationsRequest.Builder setExtras(@NonNull android.os.Bundle);
   }
 
   public final class ContentClassification implements android.os.Parcelable {
@@ -998,7 +999,7 @@
 
   public final class SelectionsRequest implements android.os.Parcelable {
     method public int describeContents();
-    method @Nullable public android.os.Bundle getExtras();
+    method @NonNull public android.os.Bundle getExtras();
     method @Nullable public android.graphics.Point getInterestPoint();
     method public int getTaskId();
     method public void writeToParcel(android.os.Parcel, int);
@@ -1007,9 +1008,9 @@
 
   public static final class SelectionsRequest.Builder {
     ctor public SelectionsRequest.Builder(int);
-    method public android.app.contentsuggestions.SelectionsRequest build();
-    method public android.app.contentsuggestions.SelectionsRequest.Builder setExtras(@NonNull android.os.Bundle);
-    method public android.app.contentsuggestions.SelectionsRequest.Builder setInterestPoint(@NonNull android.graphics.Point);
+    method @NonNull public android.app.contentsuggestions.SelectionsRequest build();
+    method @NonNull public android.app.contentsuggestions.SelectionsRequest.Builder setExtras(@NonNull android.os.Bundle);
+    method @NonNull public android.app.contentsuggestions.SelectionsRequest.Builder setInterestPoint(@NonNull android.graphics.Point);
   }
 
 }
@@ -1187,7 +1188,7 @@
     method @RequiresPermission(android.Manifest.permission.PACKAGE_USAGE_STATS) public int getAppStandbyBucket(String);
     method @RequiresPermission(android.Manifest.permission.PACKAGE_USAGE_STATS) public java.util.Map<java.lang.String,java.lang.Integer> getAppStandbyBuckets();
     method public int getUsageSource();
-    method @RequiresPermission(allOf={android.Manifest.permission.SUSPEND_APPS, android.Manifest.permission.OBSERVE_APP_USAGE}) public void registerAppUsageLimitObserver(int, @NonNull String[], long, @NonNull java.util.concurrent.TimeUnit, @Nullable android.app.PendingIntent);
+    method @RequiresPermission(allOf={android.Manifest.permission.SUSPEND_APPS, android.Manifest.permission.OBSERVE_APP_USAGE}) public void registerAppUsageLimitObserver(int, @NonNull String[], @NonNull java.time.Duration, @NonNull java.time.Duration, @Nullable android.app.PendingIntent);
     method @RequiresPermission(android.Manifest.permission.OBSERVE_APP_USAGE) public void registerAppUsageObserver(int, @NonNull String[], long, @NonNull java.util.concurrent.TimeUnit, @NonNull android.app.PendingIntent);
     method @RequiresPermission(android.Manifest.permission.OBSERVE_APP_USAGE) public void registerUsageSessionObserver(int, @NonNull String[], long, @NonNull java.util.concurrent.TimeUnit, long, @NonNull java.util.concurrent.TimeUnit, @NonNull android.app.PendingIntent, @Nullable android.app.PendingIntent);
     method public void reportUsageStart(@NonNull android.app.Activity, @NonNull String);
@@ -3540,7 +3541,7 @@
     method public void stop();
   }
 
-  public static class HwAudioSource.Builder {
+  public static final class HwAudioSource.Builder {
     ctor public HwAudioSource.Builder();
     method @NonNull public android.media.HwAudioSource build();
     method @NonNull public android.media.HwAudioSource.Builder setAudioAttributes(@NonNull android.media.AudioAttributes);
@@ -3553,7 +3554,7 @@
     field public static final int RADIO_TUNER = 1998; // 0x7ce
   }
 
-  public static class MediaTimestamp.Builder {
+  public static final class MediaTimestamp.Builder {
     ctor public MediaTimestamp.Builder();
     ctor public MediaTimestamp.Builder(@NonNull android.media.MediaTimestamp);
     method @NonNull public android.media.MediaTimestamp build();
@@ -3569,14 +3570,14 @@
     method public void stop();
   }
 
-  public static class SubtitleData.Builder {
+  public static final class SubtitleData.Builder {
     ctor public SubtitleData.Builder();
     ctor public SubtitleData.Builder(@NonNull android.media.SubtitleData);
     method @NonNull public android.media.SubtitleData build();
     method @NonNull public android.media.SubtitleData.Builder setSubtitleData(int, long, long, @NonNull byte[]);
   }
 
-  public static class TimedMetaData.Builder {
+  public static final class TimedMetaData.Builder {
     ctor public TimedMetaData.Builder();
     ctor public TimedMetaData.Builder(@NonNull android.media.TimedMetaData);
     method @NonNull public android.media.TimedMetaData build();
@@ -3678,7 +3679,7 @@
     method @Nullable public android.media.audiopolicy.AudioProductStrategy getProductStrategyForAudioAttributes(@NonNull android.media.AudioAttributes);
     method public int getVolumeGroupIdForAttributes(@NonNull android.media.AudioAttributes);
     method public int getVolumeGroupIdForLegacyStreamType(int);
-    method public java.util.Iterator<android.media.audiopolicy.AudioProductStrategy> iterator();
+    method @NonNull public java.util.Iterator<android.media.audiopolicy.AudioProductStrategy> iterator();
     method public int size();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.media.audiopolicy.AudioProductStrategies> CREATOR;
@@ -3695,7 +3696,7 @@
 
   public final class AudioVolumeGroup implements android.os.Parcelable {
     method public int describeContents();
-    method public java.util.List<android.media.AudioAttributes> getAudioAttributes();
+    method @NonNull public java.util.List<android.media.AudioAttributes> getAudioAttributes();
     method public int getId();
     method @NonNull public int[] getLegacyStreamTypes();
     method @NonNull public String name();
@@ -3707,7 +3708,7 @@
     ctor public AudioVolumeGroups();
     method public int describeContents();
     method @Nullable public android.media.audiopolicy.AudioVolumeGroup getById(int);
-    method public java.util.Iterator<android.media.audiopolicy.AudioVolumeGroup> iterator();
+    method @NonNull public java.util.Iterator<android.media.audiopolicy.AudioVolumeGroup> iterator();
     method public int size();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field public static final android.os.Parcelable.Creator<android.media.audiopolicy.AudioVolumeGroups> CREATOR;
@@ -5688,6 +5689,7 @@
     method @NonNull public abstract java.util.List<android.permission.RuntimePermissionUsageInfo> onGetPermissionUsages(boolean, long);
     method public abstract void onGetRuntimePermissionsBackup(@NonNull android.os.UserHandle, @NonNull java.io.OutputStream);
     method public abstract boolean onIsApplicationQualifiedForRole(@NonNull String, @NonNull String);
+    method public abstract boolean onIsRoleVisible(@NonNull String);
     method @BinderThread public abstract boolean onRestoreDelayedRuntimePermissionsBackup(@NonNull String, @NonNull android.os.UserHandle);
     method @BinderThread public abstract void onRestoreRuntimePermissionsBackup(@NonNull android.os.UserHandle, @NonNull java.io.InputStream);
     method public abstract void onRevokeRuntimePermission(@NonNull String, @NonNull String);
@@ -5707,7 +5709,7 @@
   }
 
   public final class RuntimePermissionPresentationInfo implements android.os.Parcelable {
-    ctor public RuntimePermissionPresentationInfo(CharSequence, boolean, boolean);
+    ctor public RuntimePermissionPresentationInfo(@NonNull CharSequence, boolean, boolean);
     method public int describeContents();
     method @NonNull public CharSequence getLabel();
     method public boolean isGranted();
@@ -5851,19 +5853,17 @@
     method @RequiresPermission(android.Manifest.permission.WRITE_DEVICE_CONFIG) public static void resetToDefaults(int, @Nullable String);
     method @RequiresPermission(android.Manifest.permission.WRITE_DEVICE_CONFIG) public static boolean setProperty(String, String, String, boolean);
     field public static final String NAMESPACE_ACTIVITY_MANAGER = "activity_manager";
+    field public static final String NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT = "activity_manager_native_boot";
     field public static final String NAMESPACE_AUTOFILL = "autofill";
     field public static final String NAMESPACE_CONTENT_CAPTURE = "content_capture";
     field public static final String NAMESPACE_GAME_DRIVER = "game_driver";
     field public static final String NAMESPACE_INPUT_NATIVE_BOOT = "input_native_boot";
+    field public static final String NAMESPACE_MEDIA_NATIVE = "media_native";
     field public static final String NAMESPACE_NETD_NATIVE = "netd_native";
+    field public static final String NAMESPACE_RUNTIME_NATIVE_BOOT = "runtime_native_boot";
     field public static final String NAMESPACE_SYSTEMUI = "systemui";
   }
 
-  public static interface DeviceConfig.ActivityManagerNativeBoot {
-    field public static final String NAMESPACE = "activity_manager_native_boot";
-    field public static final String OFFLOAD_QUEUE_ENABLED = "offload_queue_enabled";
-  }
-
   public static interface DeviceConfig.AttentionManagerService {
     field public static final String COMPONENT_NAME = "component_name";
     field public static final String NAMESPACE = "attention_manager_service";
@@ -5882,10 +5882,6 @@
     field public static final String NAMESPACE = "intelligence_attention";
   }
 
-  public static interface DeviceConfig.MediaNative {
-    field public static final String NAMESPACE = "media_native";
-  }
-
   public static interface DeviceConfig.OnPropertyChangedListener {
     method public void onPropertyChanged(String, String, String);
   }
@@ -5912,10 +5908,6 @@
     field public static final String NAMESPACE = "runtime_native";
   }
 
-  public static interface DeviceConfig.RuntimeNativeBoot {
-    field public static final String NAMESPACE = "runtime_native_boot";
-  }
-
   public static interface DeviceConfig.Scheduler {
     field public static final String ENABLE_FAST_METRICS_COLLECTION = "enable_fast_metrics_collection";
     field public static final String NAMESPACE = "scheduler";
@@ -6433,8 +6425,8 @@
 
   public abstract class ApnService extends android.app.Service {
     ctor public ApnService();
-    method public android.os.IBinder onBind(android.content.Intent);
-    method @WorkerThread public abstract java.util.List<android.content.ContentValues> onRestoreApns(int);
+    method @NonNull public android.os.IBinder onBind(@Nullable android.content.Intent);
+    method @WorkerThread @NonNull public abstract java.util.List<android.content.ContentValues> onRestoreApns(int);
   }
 
 }
@@ -7106,12 +7098,12 @@
     field public static final int WWAN = 1; // 0x1
   }
 
-  public class CallAttributes implements android.os.Parcelable {
-    ctor public CallAttributes(android.telephony.PreciseCallState, int, android.telephony.CallQuality);
+  public final class CallAttributes implements android.os.Parcelable {
+    ctor public CallAttributes(@NonNull android.telephony.PreciseCallState, int, @NonNull android.telephony.CallQuality);
     method public int describeContents();
-    method public android.telephony.CallQuality getCallQuality();
+    method @NonNull public android.telephony.CallQuality getCallQuality();
     method public int getNetworkType();
-    method public android.telephony.PreciseCallState getPreciseCallState();
+    method @NonNull public android.telephony.PreciseCallState getPreciseCallState();
     method public void writeToParcel(android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.telephony.CallAttributes> CREATOR;
   }
@@ -7148,13 +7140,13 @@
   }
 
   public final class CarrierRestrictionRules implements android.os.Parcelable {
+    method @NonNull public java.util.List<java.lang.Boolean> areCarrierIdentifiersAllowed(@NonNull java.util.List<android.service.carrier.CarrierIdentifier>);
     method public int describeContents();
     method @NonNull public java.util.List<android.service.carrier.CarrierIdentifier> getAllowedCarriers();
     method public int getDefaultCarrierRestriction();
     method @NonNull public java.util.List<android.service.carrier.CarrierIdentifier> getExcludedCarriers();
     method public int getMultiSimPolicy();
     method public boolean isAllCarriersAllowed();
-    method public java.util.List<java.lang.Boolean> isCarrierIdentifiersAllowed(@NonNull java.util.List<android.service.carrier.CarrierIdentifier>);
     method public void writeToParcel(android.os.Parcel, int);
     field public static final int CARRIER_RESTRICTION_DEFAULT_ALLOWED = 1; // 0x1
     field public static final int CARRIER_RESTRICTION_DEFAULT_NOT_ALLOWED = 0; // 0x0
@@ -7163,13 +7155,13 @@
     field public static final int MULTISIM_POLICY_ONE_VALID_SIM_MUST_BE_PRESENT = 1; // 0x1
   }
 
-  public static class CarrierRestrictionRules.Builder {
-    method public android.telephony.CarrierRestrictionRules build();
-    method public android.telephony.CarrierRestrictionRules.Builder setAllCarriersAllowed();
-    method public android.telephony.CarrierRestrictionRules.Builder setAllowedCarriers(java.util.List<android.service.carrier.CarrierIdentifier>);
-    method public android.telephony.CarrierRestrictionRules.Builder setDefaultCarrierRestriction(int);
-    method public android.telephony.CarrierRestrictionRules.Builder setExcludedCarriers(java.util.List<android.service.carrier.CarrierIdentifier>);
-    method public android.telephony.CarrierRestrictionRules.Builder setMultiSimPolicy(int);
+  public static final class CarrierRestrictionRules.Builder {
+    method @NonNull public android.telephony.CarrierRestrictionRules build();
+    method @NonNull public android.telephony.CarrierRestrictionRules.Builder setAllCarriersAllowed();
+    method @NonNull public android.telephony.CarrierRestrictionRules.Builder setAllowedCarriers(@NonNull java.util.List<android.service.carrier.CarrierIdentifier>);
+    method @NonNull public android.telephony.CarrierRestrictionRules.Builder setDefaultCarrierRestriction(int);
+    method @NonNull public android.telephony.CarrierRestrictionRules.Builder setExcludedCarriers(@NonNull java.util.List<android.service.carrier.CarrierIdentifier>);
+    method @NonNull public android.telephony.CarrierRestrictionRules.Builder setMultiSimPolicy(int);
   }
 
   public final class DataFailCause {
@@ -7959,7 +7951,7 @@
     method @Deprecated public boolean getDataEnabled(int);
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public boolean getEmergencyCallbackMode();
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimDomain();
-    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimIst();
+    method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimIst();
     method @NonNull @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public java.util.List<android.util.Pair<java.lang.Integer,java.lang.Integer>> getLogicalToPhysicalSlotMapping();
     method public static long getMaxNumberVerificationTimeoutMillis();
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public long getPreferredNetworkTypeBitmap();
@@ -8435,7 +8427,7 @@
   }
 
   public class ImsCallSessionListener {
-    method public void callQualityChanged(android.telephony.CallQuality);
+    method public void callQualityChanged(@NonNull android.telephony.CallQuality);
     method public void callSessionConferenceExtendFailed(android.telephony.ims.ImsReasonInfo);
     method public void callSessionConferenceExtendReceived(android.telephony.ims.stub.ImsCallSessionImplBase, android.telephony.ims.ImsCallProfile);
     method public void callSessionConferenceExtended(android.telephony.ims.stub.ImsCallSessionImplBase, android.telephony.ims.ImsCallProfile);
@@ -8460,7 +8452,7 @@
     method public void callSessionResumeFailed(android.telephony.ims.ImsReasonInfo);
     method public void callSessionResumeReceived(android.telephony.ims.ImsCallProfile);
     method public void callSessionResumed(android.telephony.ims.ImsCallProfile);
-    method public void callSessionRttAudioIndicatorChanged(android.telephony.ims.ImsStreamMediaProfile);
+    method public void callSessionRttAudioIndicatorChanged(@NonNull android.telephony.ims.ImsStreamMediaProfile);
     method public void callSessionRttMessageReceived(String);
     method public void callSessionRttModifyRequestReceived(android.telephony.ims.ImsCallProfile);
     method public void callSessionRttModifyResponseReceived(int);
@@ -8764,12 +8756,12 @@
   public final class ImsSsData implements android.os.Parcelable {
     ctor public ImsSsData(int, int, int, int, int);
     method public int describeContents();
-    method public android.telephony.ims.ImsCallForwardInfo[] getCallForwardInfo();
+    method @Nullable public java.util.List<android.telephony.ims.ImsCallForwardInfo> getCallForwardInfo();
     method public int getRequestType();
     method public int getResult();
     method public int getServiceClass();
     method public int getServiceType();
-    method @NonNull public android.telephony.ims.ImsSsInfo[] getSuppServiceInfo();
+    method @NonNull public java.util.List<android.telephony.ims.ImsSsInfo> getSuppServiceInfo();
     method public int getTeleserviceType();
     method public boolean isTypeBarring();
     method public boolean isTypeCf();
@@ -8829,11 +8821,11 @@
     field public static final int SS_WAIT = 12; // 0xc
   }
 
-  public static class ImsSsData.Builder {
+  public static final class ImsSsData.Builder {
     ctor public ImsSsData.Builder(int, int, int, int, int);
     method @NonNull public android.telephony.ims.ImsSsData build();
-    method @NonNull public android.telephony.ims.ImsSsData.Builder setCallForwardingInfo(@NonNull android.telephony.ims.ImsCallForwardInfo[]);
-    method @NonNull public android.telephony.ims.ImsSsData.Builder setSuppServiceInfo(@NonNull android.telephony.ims.ImsSsInfo[]);
+    method @NonNull public android.telephony.ims.ImsSsData.Builder setCallForwardingInfo(@NonNull java.util.List<android.telephony.ims.ImsCallForwardInfo>);
+    method @NonNull public android.telephony.ims.ImsSsData.Builder setSuppServiceInfo(@NonNull java.util.List<android.telephony.ims.ImsSsInfo>);
   }
 
   public final class ImsSsInfo implements android.os.Parcelable {
@@ -8842,7 +8834,7 @@
     method public int getClirInterrogationStatus();
     method public int getClirOutgoingState();
     method @Deprecated public String getIcbNum();
-    method public String getIncomingCommunicationBarringNumber();
+    method @Nullable public String getIncomingCommunicationBarringNumber();
     method public int getProvisionStatus();
     method public int getStatus();
     method public void writeToParcel(android.os.Parcel, int);
@@ -8863,7 +8855,7 @@
     field public static final int SERVICE_PROVISIONING_UNKNOWN = -1; // 0xffffffff
   }
 
-  public static class ImsSsInfo.Builder {
+  public static final class ImsSsInfo.Builder {
     ctor public ImsSsInfo.Builder(int);
     method @NonNull public android.telephony.ims.ImsSsInfo build();
     method @NonNull public android.telephony.ims.ImsSsInfo.Builder setClirInterrogationStatus(int);
diff --git a/api/test-current.txt b/api/test-current.txt
index a3b6155..684524e 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -1011,7 +1011,7 @@
     method public android.media.MediaPlayer2.DrmInfo getDrmInfo(@NonNull android.media.DataSourceDesc);
     method public android.media.MediaDrm.KeyRequest getDrmKeyRequest(@NonNull android.media.DataSourceDesc, @Nullable byte[], @Nullable byte[], @Nullable String, int, @Nullable java.util.Map<java.lang.String,java.lang.String>) throws android.media.MediaPlayer2.NoDrmSchemeException;
     method public String getDrmPropertyString(@NonNull android.media.DataSourceDesc, @NonNull String) throws android.media.MediaPlayer2.NoDrmSchemeException;
-    method public Object prepareDrm(@NonNull android.media.DataSourceDesc, @NonNull java.util.UUID);
+    method @NonNull public Object prepareDrm(@NonNull android.media.DataSourceDesc, @NonNull java.util.UUID);
     method public byte[] provideDrmKeyResponse(@NonNull android.media.DataSourceDesc, @Nullable byte[], @NonNull byte[]) throws android.media.DeniedByServerException, android.media.MediaPlayer2.NoDrmSchemeException;
     method public void releaseDrm(@NonNull android.media.DataSourceDesc) throws android.media.MediaPlayer2.NoDrmSchemeException;
     method public void restoreDrmKeys(@NonNull android.media.DataSourceDesc, @NonNull byte[]) throws android.media.MediaPlayer2.NoDrmSchemeException;
@@ -3033,7 +3033,7 @@
     method public abstract String value();
   }
 
-  @java.lang.annotation.Retention(java.lang.annotation.RetentionPolicy.SOURCE) @java.lang.annotation.Target({java.lang.annotation.ElementType.METHOD}) public @interface InspectableProperty {
+  @java.lang.annotation.Retention(java.lang.annotation.RetentionPolicy.SOURCE) @java.lang.annotation.Target({java.lang.annotation.ElementType.METHOD, java.lang.annotation.ElementType.FIELD}) public @interface InspectableProperty {
     method public abstract int attributeId() default android.content.res.Resources.ID_NULL;
     method public abstract android.view.inspector.InspectableProperty.EnumMap[] enumMapping() default {};
     method public abstract android.view.inspector.InspectableProperty.FlagMap[] flagMapping() default {};
diff --git a/cmds/incident_helper/src/ih_util.cpp b/cmds/incident_helper/src/ih_util.cpp
index 012310c..77a56e5 100644
--- a/cmds/incident_helper/src/ih_util.cpp
+++ b/cmds/incident_helper/src/ih_util.cpp
@@ -142,7 +142,7 @@
     }
     if (lineSize - lastIndex > 0) {
         int beginning = lastIndex;
-        if (record.size() == indices.size()) {
+        if (record.size() == indices.size() && !record.empty()) {
             // We've already encountered all of the columns...put whatever is
             // left in the last column.
             record.pop_back();
diff --git a/cmds/incident_helper/src/parsers/CpuInfoParser.cpp b/cmds/incident_helper/src/parsers/CpuInfoParser.cpp
index 21ced9c..5d525e6 100644
--- a/cmds/incident_helper/src/parsers/CpuInfoParser.cpp
+++ b/cmds/incident_helper/src/parsers/CpuInfoParser.cpp
@@ -65,8 +65,9 @@
         if (line.empty()) continue;
 
         nline++;
-
-        if (stripPrefix(&line, "Tasks:")) {
+        // The format changes from time to time in toybox/toys/posix/ps.c
+        // With -H, it prints Threads instead of Tasks (FLAG(H)?"Thread":"Task")
+        if (stripPrefix(&line, "Threads:")) {
             writeSuffixLine(&proto, CpuInfoProto::TASK_STATS, line, COMMA_DELIMITER,
                 CpuInfoProto::TaskStats::_FIELD_COUNT,
                 CpuInfoProto::TaskStats::_FIELD_NAMES,
diff --git a/cmds/incident_helper/testdata/cpuinfo.txt b/cmds/incident_helper/testdata/cpuinfo.txt
index ec4a839..aa3afc3 100644
--- a/cmds/incident_helper/testdata/cpuinfo.txt
+++ b/cmds/incident_helper/testdata/cpuinfo.txt
@@ -1,8 +1,8 @@
-Tasks: 2038 total,   1 running,2033 sleeping,   0 stopped,   0 zombie
+Threads: 2038 total,   1 running,2033 sleeping,   0 stopped,   0 zombie
 
-Mem:   3842668k total,  3761936k used,    80732k free,   220188k buffers
+  Mem:   3842668k total,  3761936k used,    80732k free,   220188k buffers
 
-Swap:   524284k total,    25892k used,   498392k free,  1316952k cached
+ Swap:   524284k total,    25892k used,   498392k free,  1316952k cached
 
 400%cpu  17%user   0%nice  43%sys 338%idle   0%iow   0%irq   1%sirq   0%host
 
@@ -12,4 +12,4 @@
 29438 29438 rootabcdefghij 20 0 57.9 R  14M 3.8M     top test        top
   916   916 system       18  -2  1.4 S 4.6G 404M  fg system_server   system_server
    28    28 root         -2   0  1.4 S    0    0  bg rcuc/3          [rcuc/3]
-   27    27 root         RT   0  1.4 S    0    0  ta migration/3     [migration/3]
\ No newline at end of file
+   27    27 root         RT   0  1.4 S    0    0  ta migration/3     [migration/3]
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index d593ad1..efbd098 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -3153,7 +3153,7 @@
      * {@link #PASSWORD_QUALITY_ALPHANUMERIC} with {@link #setPasswordQuality}.
      * <p>
      * On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
-     * password is always treated as empty.
+     * password history length is always 0.
      * <p>
      * The calling device admin must have requested
      * {@link DeviceAdminInfo#USES_POLICY_LIMIT_PASSWORD} to be able to call this method; if it has
@@ -3191,6 +3191,9 @@
      * <p>
      * To disable password expiration, a value of 0 may be used for timeout.
      * <p>
+     * On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password expiration is always disabled.
+     * <p>
      * The calling device admin must have requested
      * {@link DeviceAdminInfo#USES_POLICY_EXPIRE_PASSWORD} to be able to call this method; if it has
      * not, a security exception will be thrown.
@@ -3230,6 +3233,9 @@
      * returned by {@link #getParentProfileInstance(ComponentName)} in order to retrieve
      * restrictions on the parent profile.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password expiration is always disabled and this method always returns 0.
+     *
      * @param admin The name of the admin component to check, or {@code null} to aggregate all admins.
      * @return The timeout for the given admin or the minimum of all timeouts
      */
@@ -3255,6 +3261,9 @@
      * returned by {@link #getParentProfileInstance(ComponentName)} in order to retrieve
      * the password expiration for the parent profile.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password expiration is always disabled and this method always returns 0.
+     *
      * @param admin The name of the admin component to check, or {@code null} to aggregate all admins.
      * @return The password expiration time, in milliseconds since epoch.
      */
@@ -3279,6 +3288,9 @@
      * returned by {@link #getParentProfileInstance(ComponentName)} in order to retrieve
      * restrictions on the parent profile.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password history length is always 0.
+     *
      * @param admin The name of the admin component to check, or {@code null} to aggregate
      * all admins.
      * @return The length of the password history
@@ -3306,7 +3318,7 @@
      * Return the maximum password length that the device supports for a
      * particular password quality.
      * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
-     * password is always empty.
+     * password is always empty and this method always returns 0.
      * @param quality The quality being interrogated.
      * @return Returns the maximum length that the user can enter.
      */
@@ -3362,7 +3374,7 @@
      * #getParentProfileInstance}.
      *
      * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
-     * password is always treated as empty.
+     * password is always empty and this method returns {@link #PASSWORD_COMPLEXITY_NONE}.
      *
      * @throws IllegalStateException if the user is not unlocked.
      * @throws SecurityException if the calling application does not have the permission
@@ -3437,6 +3449,8 @@
      * <p>
      * The calling device admin must have requested {@link DeviceAdminInfo#USES_POLICY_WATCH_LOGIN}
      * to be able to call this method; if it has not, a security exception will be thrown.
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password is always empty and this method always returns 0.
      *
      * @return The number of times user has entered an incorrect password since the last correct
      *         password entry.
@@ -3503,6 +3517,8 @@
      * This method can be called on the {@link DevicePolicyManager} instance returned by
      * {@link #getParentProfileInstance(ComponentName)} in order to set a value on the parent
      * profile.
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password is always empty and this method has no effect - i.e. the policy is not set.
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @param num The number of failed password attempts at which point the device or profile will
@@ -3532,6 +3548,10 @@
      * returned by {@link #getParentProfileInstance(ComponentName)} in order to retrieve
      * the value for the parent profile.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * password is always empty and this method returns a default value (0) indicating that the
+     * policy is not set.
+     *
      * @param admin The name of the admin component to check, or {@code null} to aggregate
      * all admins.
      */
@@ -3619,6 +3639,8 @@
      * {@link android.os.Build.VERSION_CODES#N} and later for managed profiles, or for device admins
      * that are not device owner or profile owner.  Once set, the password cannot be changed to null
      * or empty except by these admins.</em>
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, this
+     * methods does nothing.
      * <p>
      * The calling device admin must have requested
      * {@link DeviceAdminInfo#USES_POLICY_RESET_PASSWORD} to be able to call this method; if it has
@@ -3669,6 +3691,8 @@
      * will be stored on your server and who will need access to them. Tokens may be the subject of
      * legal access requests.
      * </em>
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, the
+     * reset token is not set and this method returns false.
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @param token a secure token a least 32-byte long, which must be generated by a
@@ -3693,6 +3717,10 @@
     /**
      * Called by a profile or device owner to revoke the current password reset token.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, this
+     * method has no effect - the reset token should not have been set in the first place - and
+     * false is returned.
+     *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @return true if the operation is successful, false otherwise.
      * @throws SecurityException if admin is not a device or profile owner.
@@ -3713,6 +3741,9 @@
     /**
      * Called by a profile or device owner to check if the current reset password token is active.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature,
+     * false is always returned.
+     *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @return true if the token is active, false otherwise.
      * @throws SecurityException if admin is not a device or profile owner.
@@ -3748,6 +3779,8 @@
      * <p>
      * Calling with a {@code null} or empty password will clear any existing PIN, pattern or
      * password if the current password constraints allow it.
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature,
+     * calling this methods has no effect - the password is always empty - and false is returned.
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @param password The new password for the user. {@code null} or empty clears the password.
@@ -3855,6 +3888,9 @@
      * {@link #getParentProfileInstance(ComponentName)} in order to set restrictions on the parent
      * profile.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature,
+     * calling this methods has no effect - i.e. the timeout is not set.
+     *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @param timeoutMs The new timeout in milliseconds, after which the user will have to unlock
      *         with strong authentication method. A value of 0 means the admin is not participating
@@ -3887,6 +3923,9 @@
      * returned by {@link #getParentProfileInstance(ComponentName)} in order to retrieve
      * restrictions on the parent profile.
      *
+     * <p>On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature,
+     * 0 is returned to indicate that no timeout is configured.
+     *
      * @param admin The name of the admin component to check, or {@code null} to aggregate
      *         across all participating admins.
      * @return The timeout in milliseconds or 0 if not configured for the provided admin.
@@ -6617,6 +6656,9 @@
      * This method can be called on the {@link DevicePolicyManager} instance returned by
      * {@link #getParentProfileInstance(ComponentName)} in order to set the configuration for
      * the parent profile.
+     * <p>
+     * On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, calling
+     * this method has no effect - no trust agent configuration will be set.
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @param target Component name of the agent to be configured.
@@ -6646,6 +6688,9 @@
      * This method can be called on the {@link DevicePolicyManager} instance returned by
      * {@link #getParentProfileInstance(ComponentName)} in order to retrieve the configuration set
      * on the parent profile.
+     * <p>
+     * On devices not supporting {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature, null is
+     * always returned.
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with. If null,
      * this function returns a list of configurations for all admins that declare
diff --git a/core/java/android/app/contentsuggestions/ClassificationsRequest.java b/core/java/android/app/contentsuggestions/ClassificationsRequest.java
index 1b50015..2051a55 100644
--- a/core/java/android/app/contentsuggestions/ClassificationsRequest.java
+++ b/core/java/android/app/contentsuggestions/ClassificationsRequest.java
@@ -54,10 +54,10 @@
     }
 
     /**
-     * Return the request extras or {@code null} if there are none.
+     * Return the request extras, can be an empty bundle.
      */
-    public @Nullable Bundle getExtras() {
-        return mExtras;
+    public @NonNull Bundle getExtras() {
+        return mExtras == null ? new Bundle() : mExtras;
     }
 
     @Override
@@ -103,7 +103,7 @@
         /**
          * Sets the request extras.
          */
-        public Builder setExtras(@NonNull Bundle extras) {
+        public @NonNull Builder setExtras(@NonNull Bundle extras) {
             mExtras = extras;
             return this;
         }
@@ -111,7 +111,7 @@
         /**
          * Builds a new request instance.
          */
-        public ClassificationsRequest build() {
+        public @NonNull ClassificationsRequest build() {
             return new ClassificationsRequest(mSelections, mExtras);
         }
     }
diff --git a/core/java/android/app/contentsuggestions/SelectionsRequest.java b/core/java/android/app/contentsuggestions/SelectionsRequest.java
index 257f98d..84f33b5 100644
--- a/core/java/android/app/contentsuggestions/SelectionsRequest.java
+++ b/core/java/android/app/contentsuggestions/SelectionsRequest.java
@@ -63,10 +63,10 @@
     }
 
     /**
-     * Return the request extras or {@code null} if there aren't any.
+     * Return the request extras, may be an empty bundle if there aren't any.
      */
-    public @Nullable Bundle getExtras() {
-        return mExtras;
+    public @NonNull Bundle getExtras() {
+        return mExtras == null ? new Bundle() : mExtras;
     }
 
     @Override
@@ -118,7 +118,7 @@
         /**
          * Sets the request extras.
          */
-        public Builder setExtras(@NonNull Bundle extras) {
+        public @NonNull Builder setExtras(@NonNull Bundle extras) {
             mExtras = extras;
             return this;
         }
@@ -126,7 +126,7 @@
         /**
          * Sets the request interest point.
          */
-        public Builder setInterestPoint(@NonNull Point interestPoint) {
+        public @NonNull Builder setInterestPoint(@NonNull Point interestPoint) {
             mInterestPoint = interestPoint;
             return this;
         }
@@ -134,7 +134,7 @@
         /**
          * Builds a new request instance.
          */
-        public SelectionsRequest build() {
+        public @NonNull SelectionsRequest build() {
             return new SelectionsRequest(mTaskId, mInterestPoint, mExtras);
         }
     }
diff --git a/core/java/android/app/usage/IUsageStatsManager.aidl b/core/java/android/app/usage/IUsageStatsManager.aidl
index b72ec39..62b24e9 100644
--- a/core/java/android/app/usage/IUsageStatsManager.aidl
+++ b/core/java/android/app/usage/IUsageStatsManager.aidl
@@ -60,7 +60,7 @@
             in PendingIntent sessionEndCallbackIntent, String callingPackage);
     void unregisterUsageSessionObserver(int sessionObserverId, String callingPackage);
     void registerAppUsageLimitObserver(int observerId, in String[] packages, long timeLimitMs,
-            in PendingIntent callback, String callingPackage);
+            long timeRemainingMs, in PendingIntent callback, String callingPackage);
     void unregisterAppUsageLimitObserver(int observerId, String callingPackage);
     void reportUsageStart(in IBinder activity, String token, String callingPackage);
     void reportPastUsageStart(in IBinder activity, String token, long timeAgoMs,
diff --git a/core/java/android/app/usage/UsageStatsManager.java b/core/java/android/app/usage/UsageStatsManager.java
index d34e6d3..cee6b87 100644
--- a/core/java/android/app/usage/UsageStatsManager.java
+++ b/core/java/android/app/usage/UsageStatsManager.java
@@ -35,6 +35,7 @@
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.time.Duration;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -738,6 +739,23 @@
     }
 
     /**
+     * @deprecated use
+     * {@link #registerAppUsageLimitObserver(int, String[], Duration, Duration, PendingIntent)}.
+     *
+     * @removed
+     * @hide
+     */
+    @Deprecated
+    @UnsupportedAppUsage
+    // STOPSHIP b/126917290: remove this method once ag/6591106 is merged and it's not being used.
+    public void registerAppUsageLimitObserver(int observerId, @NonNull String[] observedEntities,
+            long timeLimit, @NonNull TimeUnit timeUnit, @Nullable PendingIntent callbackIntent) {
+        final Duration timeLimitDuration = Duration.ofMillis(timeUnit.toMillis(timeLimit));
+        registerAppUsageLimitObserver(observerId, observedEntities,
+                timeLimitDuration, timeLimitDuration, callbackIntent);
+    }
+
+    /**
      * Register a usage limit observer that receives a callback on the provided intent when the
      * sum of usages of apps and tokens in the provided {@code observedEntities} array exceeds the
      * {@code timeLimit} specified. The structure of a token is a {@link String} with the reporting
@@ -759,19 +777,21 @@
      * @see android.content.pm.LauncherApps#getAppUsageLimit
      *
      * @param observerId A unique id associated with the group of apps to be monitored. There can
-     *                  be multiple groups with common packages and different time limits.
+     *                   be multiple groups with common packages and different time limits.
      * @param observedEntities The list of packages and token to observe for usage time. Cannot be
      *                         null and must include at least one package or token.
      * @param timeLimit The total time the set of apps can be in the foreground before the
-     *                  callbackIntent is delivered. Must be at least one minute. Note: a limit of
-     *                  0 can be set to indicate that the user has already exhausted the limit for
-     *                  a group, in which case, the given {@code callbackIntent} will be ignored.
-     * @param timeUnit The unit for time specified in {@code timeLimit}. Cannot be null.
+     *                  {@code callbackIntent} is delivered. Must be at least one minute.
+     * @param timeRemaining The remaining time the set of apps can be in the foreground before the
+     *                      {@code callbackIntent} is delivered. Must be greater than
+     *                      {@code timeLimit}. Note: a limit of 0 can be set to indicate that the
+     *                      user has already exhausted the limit for a group, in which case,
+     *                      the given {@code callbackIntent} will be ignored.
      * @param callbackIntent The PendingIntent that will be dispatched when the usage limit is
      *                       exceeded by the group of apps. The delivered Intent will also contain
      *                       the extras {@link #EXTRA_OBSERVER_ID}, {@link #EXTRA_TIME_LIMIT} and
      *                       {@link #EXTRA_TIME_USED}. Cannot be {@code null} unless the observer is
-     *                       being registered with a {@code timeLimit} of 0.
+     *                       being registered with a {@code timeRemaining} of 0.
      * @throws SecurityException if the caller doesn't have both SUSPEND_APPS and OBSERVE_APP_USAGE
      *                           permissions.
      * @hide
@@ -781,10 +801,12 @@
             android.Manifest.permission.SUSPEND_APPS,
             android.Manifest.permission.OBSERVE_APP_USAGE})
     public void registerAppUsageLimitObserver(int observerId, @NonNull String[] observedEntities,
-            long timeLimit, @NonNull TimeUnit timeUnit, @Nullable PendingIntent callbackIntent) {
+            @NonNull Duration timeLimit, @NonNull Duration timeRemaining,
+            @Nullable PendingIntent callbackIntent) {
         try {
             mService.registerAppUsageLimitObserver(observerId, observedEntities,
-                    timeUnit.toMillis(timeLimit), callbackIntent, mContext.getOpPackageName());
+                    timeLimit.toMillis(), timeRemaining.toMillis(), callbackIntent,
+                    mContext.getOpPackageName());
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
diff --git a/core/java/android/hardware/camera2/CameraManager.java b/core/java/android/hardware/camera2/CameraManager.java
index 536c2e1..23401432 100644
--- a/core/java/android/hardware/camera2/CameraManager.java
+++ b/core/java/android/hardware/camera2/CameraManager.java
@@ -678,6 +678,31 @@
         public void onCameraUnavailable(@NonNull String cameraId) {
             // default empty implementation
         }
+
+        /**
+         * Notify registered clients about a change in the camera access priorities.
+         *
+         * <p>Notification that camera access priorities have changed and the camera may
+         * now be openable. An application that was previously denied camera access due to
+         * a higher-priority user already using the camera, or that was disconnected from an
+         * active camera session due to a higher-priority user trying to open the camera,
+         * should try to open the camera again if it still wants to use it.  Note that
+         * multiple applications may receive this callback at the same time, and only one of
+         * them will succeed in opening the camera in practice, depending on exact access
+         * priority levels and timing. This method is useful in cases where multiple
+         * applications may be in the resumed state at the same time, and the user switches
+         * focus between them, or if the current camera-using application moves between
+         * full-screen and Picture-in-Picture (PiP) states. In such cases, the camera
+         * available/unavailable callbacks will not be invoked, but another application may
+         * now have higher priority for camera access than the current camera-using
+         * application.</p>
+         *
+         * <p>The default implementation of this method does nothing.</p>
+         *
+         */
+        public void onCameraAccessPrioritiesChanged() {
+            // default empty implementation
+        }
     }
 
     /**
@@ -1098,6 +1123,22 @@
             }
         }
 
+        private void postSingleAccessPriorityChangeUpdate(final AvailabilityCallback callback,
+                final Executor executor) {
+            final long ident = Binder.clearCallingIdentity();
+            try {
+                executor.execute(
+                    new Runnable() {
+                        @Override
+                        public void run() {
+                            callback.onCameraAccessPrioritiesChanged();
+                        }
+                    });
+            } finally {
+                Binder.restoreCallingIdentity(ident);
+            }
+        }
+
         private void postSingleUpdate(final AvailabilityCallback callback, final Executor executor,
                 final String id, final int status) {
             if (isAvailable(status)) {
@@ -1347,6 +1388,19 @@
             }
         }
 
+        @Override
+        public void onCameraAccessPrioritiesChanged() {
+            synchronized (mLock) {
+                final int callbackCount = mCallbackMap.size();
+                for (int i = 0; i < callbackCount; i++) {
+                    Executor executor = mCallbackMap.valueAt(i);
+                    final AvailabilityCallback callback = mCallbackMap.keyAt(i);
+
+                    postSingleAccessPriorityChangeUpdate(callback, executor);
+                }
+            }
+        }
+
         /**
          * Try to connect to camera service after some delay if any client registered camera
          * availability callback or torch status callback.
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
index a17ebcb..eb0fe33 100644
--- a/core/java/android/net/NetworkCapabilities.java
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -143,6 +143,7 @@
             NET_CAPABILITY_NOT_CONGESTED,
             NET_CAPABILITY_NOT_SUSPENDED,
             NET_CAPABILITY_OEM_PAID,
+            NET_CAPABILITY_MCX
     })
     public @interface NetCapability { }
 
@@ -297,8 +298,14 @@
     @SystemApi
     public static final int NET_CAPABILITY_OEM_PAID = 22;
 
+    /**
+     * Indicates this is a network that has the ability to reach a carrier's Mission Critical
+     * servers.
+     */
+    public static final int NET_CAPABILITY_MCX = 23;
+
     private static final int MIN_NET_CAPABILITY = NET_CAPABILITY_MMS;
-    private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_OEM_PAID;
+    private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_MCX;
 
     /**
      * Network capabilities that are expected to be mutable, i.e., can change while a particular
@@ -346,7 +353,8 @@
             (1 << NET_CAPABILITY_IA) |
             (1 << NET_CAPABILITY_IMS) |
             (1 << NET_CAPABILITY_RCS) |
-            (1 << NET_CAPABILITY_XCAP);
+            (1 << NET_CAPABILITY_XCAP) |
+            (1 << NET_CAPABILITY_MCX);
 
     /**
      * Capabilities that force network to be restricted.
@@ -1614,6 +1622,7 @@
             case NET_CAPABILITY_NOT_CONGESTED:  return "NOT_CONGESTED";
             case NET_CAPABILITY_NOT_SUSPENDED:  return "NOT_SUSPENDED";
             case NET_CAPABILITY_OEM_PAID:       return "OEM_PAID";
+            case NET_CAPABILITY_MCX:            return "MCX";
             default:                            return Integer.toString(capability);
         }
     }
diff --git a/core/java/android/permission/IPermissionController.aidl b/core/java/android/permission/IPermissionController.aidl
index cb2517e..76e911d 100644
--- a/core/java/android/permission/IPermissionController.aidl
+++ b/core/java/android/permission/IPermissionController.aidl
@@ -40,6 +40,7 @@
     void getPermissionUsages(boolean countSystem, long numMillis, in RemoteCallback callback);
     void isApplicationQualifiedForRole(String roleName, String packageName,
             in RemoteCallback callback);
+    void isRoleVisible(String roleName, in RemoteCallback callback);
     void setRuntimePermissionGrantStateByDeviceAdmin(String callerPackageName, String packageName,
             String permission, int grantState, in RemoteCallback callback);
 }
diff --git a/core/java/android/permission/PermissionControllerManager.java b/core/java/android/permission/PermissionControllerManager.java
index 9d58064..5695e42 100644
--- a/core/java/android/permission/PermissionControllerManager.java
+++ b/core/java/android/permission/PermissionControllerManager.java
@@ -476,6 +476,26 @@
     }
 
     /**
+     * Check whether a role should be visible to user.
+     *
+     * @param roleName name of the role to check for
+     * @param executor Executor on which to invoke the callback
+     * @param callback Callback to receive the result
+     *
+     * @hide
+     */
+    @RequiresPermission(Manifest.permission.MANAGE_ROLE_HOLDERS)
+    public void isRoleVisible(@NonNull String roleName,
+            @NonNull @CallbackExecutor Executor executor, @NonNull Consumer<Boolean> callback) {
+        checkStringNotEmpty(roleName);
+        checkNotNull(executor);
+        checkNotNull(callback);
+
+        mRemoteService.scheduleRequest(new PendingIsRoleVisibleRequest(mRemoteService, roleName,
+                executor, callback));
+    }
+
+    /**
      * A connection to the remote service
      */
     static final class RemoteService extends
@@ -1222,4 +1242,55 @@
             }
         }
     }
+
+    /**
+     * Request for {@link #isRoleVisible}.
+     */
+    private static final class PendingIsRoleVisibleRequest extends
+            AbstractRemoteService.PendingRequest<RemoteService, IPermissionController> {
+
+        private final @NonNull String mRoleName;
+        private final @NonNull Consumer<Boolean> mCallback;
+
+        private final @NonNull RemoteCallback mRemoteCallback;
+
+        private PendingIsRoleVisibleRequest(@NonNull RemoteService service,
+                @NonNull String roleName, @NonNull @CallbackExecutor Executor executor,
+                @NonNull Consumer<Boolean> callback) {
+            super(service);
+
+            mRoleName = roleName;
+            mCallback = callback;
+
+            mRemoteCallback = new RemoteCallback(result -> executor.execute(() -> {
+                long token = Binder.clearCallingIdentity();
+                try {
+                    boolean visible;
+                    if (result != null) {
+                        visible = result.getBoolean(KEY_RESULT);
+                    } else {
+                        visible = false;
+                    }
+                    callback.accept(visible);
+                } finally {
+                    Binder.restoreCallingIdentity(token);
+                    finish();
+                }
+            }), null);
+        }
+
+        @Override
+        protected void onTimeout(RemoteService remoteService) {
+            mCallback.accept(false);
+        }
+
+        @Override
+        public void run() {
+            try {
+                getService().getServiceInterface().isRoleVisible(mRoleName, mRemoteCallback);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error checking whether role should be visible", e);
+            }
+        }
+    }
 }
diff --git a/core/java/android/permission/PermissionControllerService.java b/core/java/android/permission/PermissionControllerService.java
index ee03689..d375c10 100644
--- a/core/java/android/permission/PermissionControllerService.java
+++ b/core/java/android/permission/PermissionControllerService.java
@@ -179,12 +179,21 @@
      * @param roleName name of the role to check for
      * @param packageName package name of the application to check for
      *
-     * @return whether the application is qualified for the role.
+     * @return whether the application is qualified for the role
      */
     public abstract boolean onIsApplicationQualifiedForRole(@NonNull String roleName,
             @NonNull String packageName);
 
     /**
+     * Check whether a role should be visible to user.
+     *
+     * @param roleName name of the role to check for
+     *
+     * @return whether the role should be visible to user
+     */
+    public abstract boolean onIsRoleVisible(@NonNull String roleName);
+
+    /**
      * Set the runtime permission state from a device admin.
      *
      * @param callerPackageName The package name of the admin requesting the change
@@ -344,6 +353,18 @@
             }
 
             @Override
+            public void isRoleVisible(String roleName, RemoteCallback callback) {
+                checkStringNotEmpty(roleName);
+                checkNotNull(callback, "callback");
+
+                enforceCallingPermission(Manifest.permission.MANAGE_ROLE_HOLDERS, null);
+
+                mHandler.sendMessage(obtainMessage(
+                        PermissionControllerService::isRoleVisible,
+                        PermissionControllerService.this, roleName, callback));
+            }
+
+            @Override
             public void setRuntimePermissionGrantStateByDeviceAdmin(String callerPackageName,
                     String packageName, String permission, int grantState,
                     RemoteCallback callback) {
@@ -445,6 +466,13 @@
         callback.sendResult(result);
     }
 
+    private void isRoleVisible(@NonNull String roleName, @NonNull RemoteCallback callback) {
+        boolean visible = onIsRoleVisible(roleName);
+        Bundle result = new Bundle();
+        result.putBoolean(PermissionControllerManager.KEY_RESULT, visible);
+        callback.sendResult(result);
+    }
+
     private void setRuntimePermissionGrantStateByDeviceAdmin(@NonNull String callerPackageName,
             @NonNull String packageName, @NonNull String permission,
             @PermissionGrantState int grantState, @NonNull RemoteCallback callback) {
diff --git a/core/java/android/permission/RuntimePermissionPresentationInfo.java b/core/java/android/permission/RuntimePermissionPresentationInfo.java
index d66789f..4fce14c 100644
--- a/core/java/android/permission/RuntimePermissionPresentationInfo.java
+++ b/core/java/android/permission/RuntimePermissionPresentationInfo.java
@@ -21,6 +21,8 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import com.android.internal.util.Preconditions;
+
 /**
  * This class contains information about how a runtime permission
  * is to be presented in the UI. A single runtime permission
@@ -35,7 +37,7 @@
     private static final int FLAG_GRANTED = 1 << 0;
     private static final int FLAG_STANDARD = 1 << 1;
 
-    private final CharSequence mLabel;
+    private final @NonNull CharSequence mLabel;
     private final int mFlags;
 
     /**
@@ -45,8 +47,10 @@
      * @param granted Whether the permission is granted.
      * @param standard Whether this is a platform-defined permission.
      */
-    public RuntimePermissionPresentationInfo(CharSequence label,
+    public RuntimePermissionPresentationInfo(@NonNull CharSequence label,
             boolean granted, boolean standard) {
+        Preconditions.checkNotNull(label);
+
         mLabel = label;
         int flags = 0;
         if (granted) {
@@ -58,11 +62,6 @@
         mFlags = flags;
     }
 
-    private RuntimePermissionPresentationInfo(Parcel parcel) {
-        mLabel = parcel.readCharSequence();
-        mFlags = parcel.readInt();
-    }
-
     /**
      * @return Whether the permission is granted.
      */
@@ -97,10 +96,14 @@
         parcel.writeInt(mFlags);
     }
 
-    public static final @android.annotation.NonNull Creator<RuntimePermissionPresentationInfo> CREATOR =
+    public static final @NonNull Creator<RuntimePermissionPresentationInfo> CREATOR =
             new Creator<RuntimePermissionPresentationInfo>() {
         public RuntimePermissionPresentationInfo createFromParcel(Parcel source) {
-            return new RuntimePermissionPresentationInfo(source);
+            CharSequence label = source.readCharSequence();
+            int flags = source.readInt();
+
+            return new RuntimePermissionPresentationInfo(label, (flags & FLAG_GRANTED) != 0,
+                    (flags & FLAG_STANDARD) != 0);
         }
 
         public RuntimePermissionPresentationInfo[] newArray(int size) {
diff --git a/core/java/android/provider/DeviceConfig.java b/core/java/android/provider/DeviceConfig.java
index 2cd3c48..5d4539c 100644
--- a/core/java/android/provider/DeviceConfig.java
+++ b/core/java/android/provider/DeviceConfig.java
@@ -64,12 +64,14 @@
     public static final String NAMESPACE_ACTIVITY_MANAGER = "activity_manager";
 
     /**
-     * Namespace for all Game Driver features.
+     * Namespace for all activity manager related features that are used at the native level.
+     * These features are applied at reboot.
      *
      * @hide
      */
     @SystemApi
-    public static final String NAMESPACE_GAME_DRIVER = "game_driver";
+    public static final String NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT =
+            "activity_manager_native_boot";
 
     /**
      * Namespace for autofill feature that provides suggestions across all apps when
@@ -92,6 +94,14 @@
     public static final String NAMESPACE_CONTENT_CAPTURE = "content_capture";
 
     /**
+     * Namespace for all Game Driver features.
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String NAMESPACE_GAME_DRIVER = "game_driver";
+
+    /**
      * Namespace for all input-related features that are used at the native level.
      * These features are applied at reboot.
      *
@@ -101,6 +111,14 @@
     public static final String NAMESPACE_INPUT_NATIVE_BOOT = "input_native_boot";
 
     /**
+     * Namespace for all media native related features.
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String NAMESPACE_MEDIA_NATIVE = "media_native";
+
+    /**
      * Namespace for all netd related features.
      *
      * @hide
@@ -109,6 +127,15 @@
     public static final String NAMESPACE_NETD_NATIVE = "netd_native";
 
     /**
+     * Namespace for all runtime native boot related features. Boot in this case refers to the
+     * fact that the properties only take affect after rebooting the device.
+     *
+     * @hide
+     */
+    @SystemApi
+    public static final String NAMESPACE_RUNTIME_NATIVE_BOOT = "runtime_native_boot";
+
+    /**
      * Namespace for System UI related features.
      *
      * @hide
@@ -174,40 +201,6 @@
     }
 
     /**
-     * Namespace for all runtime native boot related features. Boot in this case refers to the
-     * fact that the properties only take affect after rebooting the device.
-     *
-     * @hide
-     */
-    @SystemApi
-    public interface RuntimeNativeBoot {
-        String NAMESPACE = "runtime_native_boot";
-    }
-
-    /**
-     * Namespace for all media native related features.
-     *
-     * @hide
-     */
-    @SystemApi
-    public interface MediaNative {
-        /** The flag namespace for media native features. */
-        String NAMESPACE = "media_native";
-    }
-
-    /**
-     * Namespace for all activity manager related features that are used at the native level.
-     * These features are applied at reboot.
-     *
-     * @hide
-     */
-    @SystemApi
-    public interface ActivityManagerNativeBoot {
-        String NAMESPACE = "activity_manager_native_boot";
-        String OFFLOAD_QUEUE_ENABLED = "offload_queue_enabled";
-    }
-
-    /**
      * Namespace for attention-based features provided by on-device machine intelligence.
      *
      * @hide
diff --git a/core/java/android/provider/MediaStore.java b/core/java/android/provider/MediaStore.java
index a34ac70..917b5c2 100644
--- a/core/java/android/provider/MediaStore.java
+++ b/core/java/android/provider/MediaStore.java
@@ -146,6 +146,8 @@
     public static final String RETRANSLATE_CALL = "update_titles";
 
     /** {@hide} */
+    public static final String GET_VERSION_CALL = "get_version";
+    /** {@hide} */
     public static final String GET_DOCUMENT_URI_CALL = "get_document_uri";
     /** {@hide} */
     public static final String GET_MEDIA_URI_CALL = "get_media_uri";
@@ -3318,21 +3320,41 @@
     public static final String MEDIA_IGNORE_FILENAME = ".nomedia";
 
     /**
-     * Get the media provider's version.
-     * Applications that import data from the media provider into their own caches
-     * can use this to detect that the media provider changed, and reimport data
-     * as needed. No other assumptions should be made about the meaning of the version.
-     * @param context Context to use for performing the query.
-     * @return A version string, or null if the version could not be determined.
+     * Return an opaque version string describing the {@link MediaStore} state.
+     * <p>
+     * Applications that import data from {@link MediaStore} into their own
+     * caches can use this to detect that {@link MediaStore} has undergone
+     * substantial changes, and that data should be rescanned.
+     * <p>
+     * No other assumptions should be made about the meaning of the version.
+     * <p>
+     * This method returns the version for {@link MediaStore#VOLUME_EXTERNAL};
+     * to obtain a version for a different volume, use
+     * {@link #getVersion(Context, String)}.
      */
-    public static String getVersion(Context context) {
-        final Uri uri = AUTHORITY_URI.buildUpon().appendPath("none").appendPath("version").build();
-        try (Cursor c = context.getContentResolver().query(uri, null, null, null, null)) {
-            if (c.moveToFirst()) {
-                return c.getString(0);
-            }
+    public static @NonNull String getVersion(@NonNull Context context) {
+        return getVersion(context, VOLUME_EXTERNAL);
+    }
+
+    /**
+     * Return an opaque version string describing the {@link MediaStore} state.
+     * <p>
+     * Applications that import data from {@link MediaStore} into their own
+     * caches can use this to detect that {@link MediaStore} has undergone
+     * substantial changes, and that data should be rescanned.
+     * <p>
+     * No other assumptions should be made about the meaning of the version.
+     */
+    public static @NonNull String getVersion(@NonNull Context context, @NonNull String volumeName) {
+        final ContentResolver resolver = context.getContentResolver();
+        try (ContentProviderClient client = resolver.acquireContentProviderClient(AUTHORITY)) {
+            final Bundle in = new Bundle();
+            in.putString(Intent.EXTRA_TEXT, volumeName);
+            final Bundle out = client.call(GET_VERSION_CALL, null, in);
+            return out.getString(Intent.EXTRA_TEXT);
+        } catch (RemoteException e) {
+            throw e.rethrowAsRuntimeException();
         }
-        return null;
     }
 
     /**
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 368fc2a..45219d6 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -3321,6 +3321,17 @@
                         ColorDisplayManager.COLOR_MODE_AUTOMATIC);
 
         /**
+         * The user selected peak refresh rate in frames per second.
+         *
+         * If this isn't set, the system falls back to a device specific default.
+         * @hide
+         */
+        public static final String PEAK_REFRESH_RATE = "peak_refresh_rate";
+
+        private static final Validator PEAK_REFRESH_RATE_VALIDATOR =
+                new SettingsValidators.InclusiveFloatRangeValidator(24f, Float.MAX_VALUE);
+
+        /**
          * The amount of time in milliseconds before the device goes to sleep or begins
          * to dream after a period of inactivity.  This value is also known as the
          * user activity timeout period since the screen isn't necessarily turned off
diff --git a/core/java/android/service/carrier/ApnService.java b/core/java/android/service/carrier/ApnService.java
index d53eb37..57e4b1b 100644
--- a/core/java/android/service/carrier/ApnService.java
+++ b/core/java/android/service/carrier/ApnService.java
@@ -16,6 +16,8 @@
 
 package android.service.carrier;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.annotation.WorkerThread;
 import android.app.Service;
@@ -60,7 +62,8 @@
     };
 
     @Override
-    public IBinder onBind(Intent intent) {
+    @NonNull
+    public IBinder onBind(@Nullable Intent intent) {
         return mBinder;
     }
 
@@ -73,5 +76,6 @@
      * subId.
      */
     @WorkerThread
+    @NonNull
     public abstract List<ContentValues> onRestoreApns(int subId);
 }
diff --git a/core/java/android/text/style/LineHeightSpan.java b/core/java/android/text/style/LineHeightSpan.java
index a5d5af2..7fb0f95 100644
--- a/core/java/android/text/style/LineHeightSpan.java
+++ b/core/java/android/text/style/LineHeightSpan.java
@@ -88,7 +88,7 @@
         /**
          * Constructor called from {@link TextUtils} to restore the span from a parcel
          */
-        public Standard(Parcel src) {
+        public Standard(@NonNull Parcel src) {
             mHeight = src.readInt();
         }
 
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 877b304..874be81 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -18589,7 +18589,7 @@
             @FlagMap(target = FADING_EDGE_VERTICAL, name = "vertical"),
             @FlagMap(target = FADING_EDGE_HORIZONTAL, name = "horizontal")
     })
-    int getFadingEdge() {
+    public int getFadingEdge() {
         return mViewFlags & FADING_EDGE_MASK;
     }
 
@@ -18600,7 +18600,7 @@
      * @hide
      */
     @InspectableProperty
-    int getFadingEdgeLength() {
+    public int getFadingEdgeLength() {
         if (mScrollCache != null && (mViewFlags & FADING_EDGE_MASK) != FADING_EDGE_NONE) {
             return mScrollCache.fadingEdgeLength;
         }
diff --git a/core/java/android/view/inspector/InspectableProperty.java b/core/java/android/view/inspector/InspectableProperty.java
index f859521..30938c1 100644
--- a/core/java/android/view/inspector/InspectableProperty.java
+++ b/core/java/android/view/inspector/InspectableProperty.java
@@ -16,6 +16,7 @@
 
 package android.view.inspector;
 
+import static java.lang.annotation.ElementType.FIELD;
 import static java.lang.annotation.ElementType.METHOD;
 import static java.lang.annotation.ElementType.TYPE;
 import static java.lang.annotation.RetentionPolicy.SOURCE;
@@ -39,7 +40,7 @@
  * @see InspectionCompanion#readProperties(Object, PropertyReader)
  * @hide
  */
-@Target({METHOD})
+@Target({METHOD, FIELD})
 @Retention(SOURCE)
 @TestApi
 public @interface InspectableProperty {
diff --git a/core/java/android/widget/TextView.java b/core/java/android/widget/TextView.java
index 73792b0..04bcb14 100644
--- a/core/java/android/widget/TextView.java
+++ b/core/java/android/widget/TextView.java
@@ -12744,7 +12744,7 @@
      * return value may not be the same as the one TextView uses if the View's layout direction is
      * not resolved or detached from parent root view.
      */
-    public TextDirectionHeuristic getTextDirectionHeuristic() {
+    public @NonNull TextDirectionHeuristic getTextDirectionHeuristic() {
         if (hasPasswordTransformationMethod()) {
             // passwords fields should be LTR
             return TextDirectionHeuristics.LTR;
diff --git a/core/proto/android/app/settings_enums.proto b/core/proto/android/app/settings_enums.proto
index f3bc2c7..5064d23 100644
--- a/core/proto/android/app/settings_enums.proto
+++ b/core/proto/android/app/settings_enums.proto
@@ -2287,4 +2287,7 @@
 
     // OPEN: Accessibility detail settings (android.settings.ACCESSIBILITY_DETAILS_SETTINGS intent)
     ACCESSIBILITY_DETAILS_SETTINGS = 1682;
+
+    // Open: Settings will show the conditional when Grayscale mode is on
+    SETTINGS_CONDITION_GRAYSCALE_MODE = 1683;
 }
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index e87295a..ae3e714 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -4445,15 +4445,23 @@
          @hide -->
     <permission android:name="android.permission.RECEIVE_DEVICE_CUSTOMIZATION_READY"
         android:protectionLevel="signature|preinstalled" />
+
     <!-- @SystemApi Allows wallpaper to be rendered in ambient mode.
          @hide -->
     <permission android:name="android.permission.AMBIENT_WALLPAPER"
                 android:protectionLevel="signature|preinstalled" />
+
     <!-- @SystemApi Allows sensor privacy to be modified.
          @hide -->
     <permission android:name="android.permission.MANAGE_SENSOR_PRIVACY"
                 android:protectionLevel="signature" />
 
+    <!-- @SystemApi Allows an activity to replace the app name and icon displayed in share targets
+         in the sharesheet for the Q-release and later.
+         @hide  <p>Not for use by third-party applications.</p> -->
+    <permission android:name="android.permission.SUBSTITUTE_SHARE_TARGET_APP_NAME_AND_ICON"
+                android:protectionLevel="signature|privileged" />
+
     <application android:process="system"
                  android:persistent="true"
                  android:hasCode="false"
diff --git a/core/res/res/layout/immersive_mode_cling.xml b/core/res/res/layout/immersive_mode_cling.xml
index b08b0f4..9fd615d 100644
--- a/core/res/res/layout/immersive_mode_cling.xml
+++ b/core/res/res/layout/immersive_mode_cling.xml
@@ -59,7 +59,7 @@
             android:paddingStart="48dp"
             android:paddingTop="40dp"
             android:text="@string/immersive_cling_title"
-            android:textColor="@color/primary_text_default_material_light"
+            android:textColor="@android:color/white"
             android:textSize="24sp" />
 
     <TextView
@@ -71,7 +71,7 @@
             android:paddingStart="48dp"
             android:paddingTop="12.6dp"
             android:text="@string/immersive_cling_description"
-            android:textColor="@color/primary_text_default_material_light"
+            android:textColor="@android:color/white"
             android:textSize="16sp" />
 
     <Button
@@ -89,4 +89,4 @@
             android:textColor="@android:color/white"
             android:textSize="14sp" />
 
-</RelativeLayout>
\ No newline at end of file
+</RelativeLayout>
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 47e5462..2f2fdca 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -3945,4 +3945,7 @@
      and a second time clipped to the fill level to indicate charge -->
     <bool name="config_batterymeterDualTone">false</bool>
 
+    <!-- The default peak refresh rate for a given device. Change this value if you want to allow
+         for higher refresh rates to be automatically used out of the box -->
+    <integer name="config_defaultPeakRefreshRate">60</integer>
 </resources>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 426d813..d5444c0 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -3688,4 +3688,6 @@
   <java-symbol type="string" name="mime_type_spreadsheet_ext" />
   <java-symbol type="string" name="mime_type_presentation" />
   <java-symbol type="string" name="mime_type_presentation_ext" />
+
+  <java-symbol type="integer" name="config_defaultPeakRefreshRate" />
 </resources>
diff --git a/core/tests/BroadcastRadioTests/Android.mk b/core/tests/BroadcastRadioTests/Android.mk
index 6b0484e..faffc4b 100644
--- a/core/tests/BroadcastRadioTests/Android.mk
+++ b/core/tests/BroadcastRadioTests/Android.mk
@@ -25,7 +25,7 @@
 # LOCAL_SDK_VERSION := current
 LOCAL_PRIVATE_PLATFORM_APIS := true
 
-LOCAL_STATIC_JAVA_LIBRARIES := compatibility-device-util androidx.test.rules testng
+LOCAL_STATIC_JAVA_LIBRARIES := compatibility-device-util-axt androidx.test.rules testng
 
 LOCAL_JAVA_LIBRARIES := android.test.base
 
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 69632c1..ebc6be7 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -92,7 +92,8 @@
                     Settings.System.VOLUME_SYSTEM, // deprecated since API 2?
                     Settings.System.VOLUME_VOICE, // deprecated since API 2?
                     Settings.System.WHEN_TO_MAKE_WIFI_CALLS, // bug?
-                    Settings.System.WINDOW_ORIENTATION_LISTENER_LOG // used for debugging only
+                    Settings.System.WINDOW_ORIENTATION_LISTENER_LOG, // used for debugging only
+                    Settings.System.PEAK_REFRESH_RATE // depends on hardware capabilities
                     );
 
     private static final Set<String> BACKUP_BLACKLISTED_GLOBAL_SETTINGS =
diff --git a/data/etc/com.android.settings.xml b/data/etc/com.android.settings.xml
index 2110a8f..3e53a38 100644
--- a/data/etc/com.android.settings.xml
+++ b/data/etc/com.android.settings.xml
@@ -33,6 +33,7 @@
         <permission name="android.permission.MANAGE_USERS"/>
         <permission name="android.permission.MANAGE_USER_OEM_UNLOCK_STATE" />
         <permission name="android.permission.MASTER_CLEAR"/>
+        <permission name="android.permission.MEDIA_CONTENT_CONTROL"/>
         <permission name="android.permission.MODIFY_PHONE_STATE"/>
         <permission name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
         <permission name="android.permission.MOVE_PACKAGE"/>
diff --git a/graphics/java/android/graphics/ImageDecoder.java b/graphics/java/android/graphics/ImageDecoder.java
index 7016cc7..d3ca11c 100644
--- a/graphics/java/android/graphics/ImageDecoder.java
+++ b/graphics/java/android/graphics/ImageDecoder.java
@@ -59,6 +59,8 @@
 import java.io.InputStream;
 import java.lang.annotation.Retention;
 import java.nio.ByteBuffer;
+import java.util.Locale;
+import java.util.Objects;
 import java.util.concurrent.Callable;
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -838,6 +840,39 @@
     }
 
     /**
+     * Return if the given MIME type is a supported file format that can be
+     * decoded by this class. This can be useful to determine if a file can be
+     * decoded directly, or if it needs to be converted into a more general
+     * format using an API like {@link ContentResolver#openTypedAssetFile}.
+     */
+    public static boolean isMimeTypeSupported(@NonNull String mimeType) {
+        Objects.requireNonNull(mimeType);
+        switch (mimeType.toLowerCase(Locale.US)) {
+            case "image/png":
+            case "image/jpeg":
+            case "image/webp":
+            case "image/gif":
+            case "image/heif":
+            case "image/bmp":
+            case "image/x-ico":
+            case "image/vnd.wap.wbmp":
+            case "image/x-sony-arw":
+            case "image/x-canon-cr2":
+            case "image/x-adobe-dng":
+            case "image/x-nikon-nef":
+            case "image/x-nikon-nrw":
+            case "image/x-olympus-orf":
+            case "image/x-fuji-raf":
+            case "image/x-panasonic-rw2":
+            case "image/x-pentax-pef":
+            case "image/x-samsung-srw":
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /**
      * Create a new {@link Source Source} from a resource.
      *
      * @param res the {@link Resources} object containing the image data.
diff --git a/keystore/tests/Android.mk b/keystore/tests/Android.mk
index 596e5f5..99d3197 100644
--- a/keystore/tests/Android.mk
+++ b/keystore/tests/Android.mk
@@ -21,7 +21,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test
+    androidx.test.rules hamcrest-library
 
 LOCAL_PACKAGE_NAME := KeystoreTests
 LOCAL_PRIVATE_PLATFORM_APIS := true
diff --git a/keystore/tests/AndroidManifest.xml b/keystore/tests/AndroidManifest.xml
index 9bf2d0c..6833cd1 100644
--- a/keystore/tests/AndroidManifest.xml
+++ b/keystore/tests/AndroidManifest.xml
@@ -20,7 +20,7 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="android.security.tests"
         android:label="Tests for Keystore">
     </instrumentation>
diff --git a/keystore/tests/src/android/security/ParcelableKeyGenParameterSpecTest.java b/keystore/tests/src/android/security/ParcelableKeyGenParameterSpecTest.java
index 32f8ec4..fca2775 100644
--- a/keystore/tests/src/android/security/ParcelableKeyGenParameterSpecTest.java
+++ b/keystore/tests/src/android/security/ParcelableKeyGenParameterSpecTest.java
@@ -22,16 +22,20 @@
 
 import android.os.Parcel;
 import android.security.keystore.KeyGenParameterSpec;
-import android.security.keystore.ParcelableKeyGenParameterSpec;
 import android.security.keystore.KeyProperties;
-import android.support.test.runner.AndroidJUnit4;
+import android.security.keystore.ParcelableKeyGenParameterSpec;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
 import java.math.BigInteger;
 import java.security.spec.ECGenParameterSpec;
 import java.security.spec.RSAKeyGenParameterSpec;
 import java.util.Date;
+
 import javax.security.auth.x500.X500Principal;
-import org.junit.Test;
-import org.junit.runner.RunWith;
 
 /** Unit tests for {@link ParcelableKeyGenParameterSpec}. */
 @RunWith(AndroidJUnit4.class)
diff --git a/keystore/tests/src/android/security/keystore/KeyGenParameterSpecTest.java b/keystore/tests/src/android/security/keystore/KeyGenParameterSpecTest.java
index 865cad4..b2edfd0 100644
--- a/keystore/tests/src/android/security/keystore/KeyGenParameterSpecTest.java
+++ b/keystore/tests/src/android/security/keystore/KeyGenParameterSpecTest.java
@@ -20,10 +20,12 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThat;
 
+import android.security.ParcelableKeyGenParameterSpecTest;
 import android.security.keystore.KeyGenParameterSpec;
 import android.security.keystore.KeyProperties;
-import android.security.ParcelableKeyGenParameterSpecTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/libs/androidfw/AssetManager2.cpp b/libs/androidfw/AssetManager2.cpp
index 117d05e..d74f27c 100644
--- a/libs/androidfw/AssetManager2.cpp
+++ b/libs/androidfw/AssetManager2.cpp
@@ -1052,6 +1052,8 @@
 }
 
 void AssetManager2::InvalidateCaches(uint32_t diff) {
+  cached_bag_resid_stacks_.clear();
+
   if (diff == 0xffffffffu) {
     // Everything must go.
     cached_bags_.clear();
diff --git a/location/java/android/location/Location.java b/location/java/android/location/Location.java
index ed74333..17e2509 100644
--- a/location/java/android/location/Location.java
+++ b/location/java/android/location/Location.java
@@ -113,10 +113,6 @@
      * Bit mask for mFieldsMask indicating the presence of mBearingAccuracy.
      */
     private static final int HAS_BEARING_ACCURACY_MASK = 128;
-    /**
-     * Bit mask for mFieldsMask indicating the presence of mElapsedRealtimeUncertaintyNanos.
-     */
-    private static final int HAS_ELAPSED_REALTIME_UNCERTAINTY_MASK = 256;
 
     // Cached data to make bearing/distance computations more efficient for the case
     // where distanceTo and bearingTo are called in sequence.  Assume this typically happens
@@ -134,9 +130,6 @@
     private long mTime = 0;
     @UnsupportedAppUsage
     private long mElapsedRealtimeNanos = 0;
-    // Estimate of the relative precision of the alignment of this SystemClock
-    // timestamp, with the reported measurements in nanoseconds (68% confidence).
-    private long mElapsedRealtimeUncertaintyNanos = 0;
     private double mLatitude = 0.0;
     private double mLongitude = 0.0;
     private double mAltitude = 0.0f;
@@ -178,7 +171,6 @@
         mProvider = l.mProvider;
         mTime = l.mTime;
         mElapsedRealtimeNanos = l.mElapsedRealtimeNanos;
-        mElapsedRealtimeUncertaintyNanos = l.mElapsedRealtimeUncertaintyNanos;
         mFieldsMask = l.mFieldsMask;
         mLatitude = l.mLatitude;
         mLongitude = l.mLongitude;
@@ -199,7 +191,6 @@
         mProvider = null;
         mTime = 0;
         mElapsedRealtimeNanos = 0;
-        mElapsedRealtimeUncertaintyNanos = 0;
         mFieldsMask = 0;
         mLatitude = 0;
         mLongitude = 0;
@@ -595,37 +586,6 @@
     }
 
     /**
-     * Get estimate of the relative precision of the alignment of the
-     * ElapsedRealtimeNanos timestamp, with the reported measurements in
-     * nanoseconds (68% confidence).
-     *
-     * @return uncertainty of elapsed real-time of fix, in nanoseconds.
-     */
-    public long getElapsedRealtimeUncertaintyNanos() {
-        return mElapsedRealtimeUncertaintyNanos;
-    }
-
-    /**
-     * Set estimate of the relative precision of the alignment of the
-     * ElapsedRealtimeNanos timestamp, with the reported measurements in
-     * nanoseconds (68% confidence).
-     *
-     * @param time uncertainty of the elapsed real-time of fix, in nanoseconds.
-     */
-    public void setElapsedRealtimeUncertaintyNanos(long time) {
-        mElapsedRealtimeUncertaintyNanos = time;
-        mFieldsMask |= HAS_ELAPSED_REALTIME_UNCERTAINTY_MASK;
-    }
-
-    /**
-     * True if this location has a elapsed realtime accuracy.
-     */
-    public boolean hasElapsedRealtimeUncertaintyNanos() {
-        return (mFieldsMask & HAS_ELAPSED_REALTIME_UNCERTAINTY_MASK) != 0;
-    }
-
-
-    /**
      * Get the latitude, in degrees.
      *
      * <p>All locations generated by the {@link LocationManager}
@@ -1102,10 +1062,6 @@
             s.append(" et=");
             TimeUtils.formatDuration(mElapsedRealtimeNanos / 1000000L, s);
         }
-        if (hasElapsedRealtimeUncertaintyNanos()) {
-            s.append(" etAcc=");
-            TimeUtils.formatDuration(mElapsedRealtimeUncertaintyNanos / 1000000L, s);
-        }
         if (hasAltitude()) s.append(" alt=").append(mAltitude);
         if (hasSpeed()) s.append(" vel=").append(mSpeed);
         if (hasBearing()) s.append(" bear=").append(mBearing);
@@ -1136,7 +1092,6 @@
             Location l = new Location(provider);
             l.mTime = in.readLong();
             l.mElapsedRealtimeNanos = in.readLong();
-            l.mElapsedRealtimeUncertaintyNanos = in.readLong();
             l.mFieldsMask = in.readByte();
             l.mLatitude = in.readDouble();
             l.mLongitude = in.readDouble();
@@ -1167,7 +1122,6 @@
         parcel.writeString(mProvider);
         parcel.writeLong(mTime);
         parcel.writeLong(mElapsedRealtimeNanos);
-        parcel.writeLong(mElapsedRealtimeUncertaintyNanos);
         parcel.writeByte(mFieldsMask);
         parcel.writeDouble(mLatitude);
         parcel.writeDouble(mLongitude);
diff --git a/media/apex/java/android/media/CallbackDataSourceDesc.java b/media/apex/java/android/media/CallbackDataSourceDesc.java
index cd36414..9209ca9 100644
--- a/media/apex/java/android/media/CallbackDataSourceDesc.java
+++ b/media/apex/java/android/media/CallbackDataSourceDesc.java
@@ -17,6 +17,7 @@
 package android.media;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 
 /**
  * Structure of data source descriptor for sources using callback.
@@ -37,7 +38,7 @@
      * Return the DataSourceCallback of this data source.
      * @return the DataSourceCallback of this data source
      */
-    public DataSourceCallback getDataSourceCallback() {
+    public @NonNull DataSourceCallback getDataSourceCallback() {
         return mDataSourceCallback;
     }
 
@@ -70,7 +71,7 @@
          * @param dsd the {@link CallbackDataSourceDesc} object whose data will be reused
          * in the new Builder.
          */
-        public Builder(CallbackDataSourceDesc dsd) {
+        public Builder(@Nullable CallbackDataSourceDesc dsd) {
             super(dsd);
             if (dsd == null) {
                 return;  // use default
@@ -86,6 +87,11 @@
          * @return a new {@link CallbackDataSourceDesc} object
          */
         public @NonNull CallbackDataSourceDesc build() {
+            if (mDataSourceCallback == null) {
+                throw new IllegalStateException(
+                        "DataSourceCallback should not be null");
+            }
+
             CallbackDataSourceDesc dsd = new CallbackDataSourceDesc();
             super.build(dsd);
             dsd.mDataSourceCallback = mDataSourceCallback;
diff --git a/media/apex/java/android/media/DataSourceCallback.java b/media/apex/java/android/media/DataSourceCallback.java
index 1afcd20..6515bd6 100644
--- a/media/apex/java/android/media/DataSourceCallback.java
+++ b/media/apex/java/android/media/DataSourceCallback.java
@@ -17,6 +17,8 @@
 
 package android.media;
 
+import android.annotation.NonNull;
+
 import java.io.Closeable;
 import java.io.IOException;
 
@@ -49,7 +51,7 @@
      * @throws IOException on fatal errors.
      * @return the number of bytes read, or -1 if end of stream is reached.
      */
-    public abstract int readAt(long position, byte[] buffer, int offset, int size)
+    public abstract int readAt(long position, @NonNull byte[] buffer, int offset, int size)
             throws IOException;
 
     /**
diff --git a/media/apex/java/android/media/DataSourceDesc.java b/media/apex/java/android/media/DataSourceDesc.java
index 7fc6f79..e6fd120 100644
--- a/media/apex/java/android/media/DataSourceDesc.java
+++ b/media/apex/java/android/media/DataSourceDesc.java
@@ -17,6 +17,7 @@
 package android.media;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 
 /**
  * Base class of data source descriptor.
@@ -64,7 +65,7 @@
      * Return the media Id of data source.
      * @return the media Id of data source
      */
-    public String getMediaId() {
+    public @Nullable String getMediaId() {
         return mMediaId;
     }
 
@@ -149,7 +150,7 @@
          * @param mediaId the media Id of this data source
          * @return the same Builder instance.
          */
-        public @NonNull T setMediaId(String mediaId) {
+        public @NonNull T setMediaId(@Nullable String mediaId) {
             mMediaId = mediaId;
             return (T) this;
         }
diff --git a/media/apex/java/android/media/FileDataSourceDesc.java b/media/apex/java/android/media/FileDataSourceDesc.java
index e29bd00..4b70367 100644
--- a/media/apex/java/android/media/FileDataSourceDesc.java
+++ b/media/apex/java/android/media/FileDataSourceDesc.java
@@ -17,6 +17,7 @@
 package android.media;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.os.ParcelFileDescriptor;
 import android.util.Log;
 
@@ -106,7 +107,7 @@
      * Return the ParcelFileDescriptor of this data source.
      * @return the ParcelFileDescriptor of this data source
      */
-    public ParcelFileDescriptor getParcelFileDescriptor() {
+    public @NonNull ParcelFileDescriptor getParcelFileDescriptor() {
         return mPFD;
     }
 
@@ -159,7 +160,7 @@
          * @param dsd the {@link FileDataSourceDesc} object whose data will be reused
          * in the new Builder.
          */
-        public Builder(FileDataSourceDesc dsd) {
+        public Builder(@Nullable FileDataSourceDesc dsd) {
             super(dsd);
             if (dsd == null) {
                 return;  // use default
diff --git a/media/apex/java/android/media/MediaPlayer2.java b/media/apex/java/android/media/MediaPlayer2.java
index ef30172..f6b2031 100644
--- a/media/apex/java/android/media/MediaPlayer2.java
+++ b/media/apex/java/android/media/MediaPlayer2.java
@@ -344,7 +344,7 @@
      * to free the resources. If not released, too many MediaPlayer2 instances may
      * result in an exception.</p>
      */
-    public MediaPlayer2(Context context) {
+    public MediaPlayer2(@NonNull Context context) {
         mGuard.open("close");
 
         mContext = context;
@@ -488,7 +488,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object play() {
+    public @NonNull Object play() {
         return addTask(new Task(CALL_COMPLETED_PLAY, false) {
             @Override
             void process() {
@@ -508,7 +508,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object prepare() {
+    public @NonNull Object prepare() {
         return addTask(new Task(CALL_COMPLETED_PREPARE, true) {
             @Override
             void process() {
@@ -524,7 +524,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object pause() {
+    public @NonNull Object pause() {
         return addTask(new Task(CALL_COMPLETED_PAUSE, false) {
             @Override
             void process() {
@@ -542,7 +542,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object skipToNext() {
+    public @NonNull Object skipToNext() {
         return addTask(new Task(CALL_COMPLETED_SKIP_TO_NEXT, false) {
             @Override
             void process() {
@@ -700,7 +700,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setAudioAttributes(@NonNull AudioAttributes attributes) {
+    public @NonNull Object setAudioAttributes(@NonNull AudioAttributes attributes) {
         return addTask(new Task(CALL_COMPLETED_SET_AUDIO_ATTRIBUTES, false) {
             @Override
             void process() {
@@ -735,7 +735,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setDataSource(@NonNull DataSourceDesc dsd) {
+    public @NonNull Object setDataSource(@NonNull DataSourceDesc dsd) {
         return addTask(new Task(CALL_COMPLETED_SET_DATA_SOURCE, false) {
             @Override
             void process() throws IOException {
@@ -768,7 +768,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setNextDataSource(@NonNull DataSourceDesc dsd) {
+    public @NonNull Object setNextDataSource(@NonNull DataSourceDesc dsd) {
         return addTask(new Task(CALL_COMPLETED_SET_NEXT_DATA_SOURCE, false) {
             @Override
             void process() {
@@ -791,7 +791,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setNextDataSources(@NonNull List<DataSourceDesc> dsds) {
+    public @NonNull Object setNextDataSources(@NonNull List<DataSourceDesc> dsds) {
         return addTask(new Task(CALL_COMPLETED_SET_NEXT_DATA_SOURCES, false) {
             @Override
             void process() {
@@ -853,7 +853,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object clearNextDataSources() {
+    public @NonNull Object clearNextDataSources() {
         return addTask(new Task(CALL_COMPLETED_CLEAR_NEXT_DATA_SOURCES, false) {
             @Override
             void process() {
@@ -1194,7 +1194,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object loopCurrent(boolean loop) {
+    public @NonNull Object loopCurrent(boolean loop) {
         return addTask(new Task(CALL_COMPLETED_LOOP_CURRENT, false) {
             @Override
             void process() {
@@ -1216,7 +1216,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setPlayerVolume(float volume) {
+    public @NonNull Object setPlayerVolume(float volume) {
         return addTask(new Task(CALL_COMPLETED_SET_PLAYER_VOLUME, false) {
             @Override
             void process() {
@@ -1257,7 +1257,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object notifyWhenCommandLabelReached(@NonNull Object label) {
+    public @NonNull Object notifyWhenCommandLabelReached(@NonNull Object label) {
         return addTask(new Task(CALL_COMPLETED_NOTIFY_WHEN_COMMAND_LABEL_REACHED, false) {
             @Override
             void process() {
@@ -1285,7 +1285,7 @@
      * @param sh the SurfaceHolder to use for video display
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
-    public Object setDisplay(SurfaceHolder sh) {
+    public @NonNull Object setDisplay(@Nullable SurfaceHolder sh) {
         return addTask(new Task(CALL_COMPLETED_SET_DISPLAY, false) {
             @Override
             void process() {
@@ -1321,7 +1321,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setSurface(Surface surface) {
+    public @NonNull Object setSurface(@Nullable Surface surface) {
         return addTask(new Task(CALL_COMPLETED_SET_SURFACE, false) {
             @Override
             void process() {
@@ -1355,7 +1355,7 @@
      * @see android.os.PowerManager
      */
     // This is an asynchronous call.
-    public Object setWakeLock(@NonNull PowerManager.WakeLock wakeLock) {
+    public @NonNull Object setWakeLock(@NonNull PowerManager.WakeLock wakeLock) {
         return addTask(new Task(CALL_COMPLETED_SET_WAKE_LOCK, false) {
             @Override
             void process() {
@@ -1390,7 +1390,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setScreenOnWhilePlaying(boolean screenOn) {
+    public @NonNull Object setScreenOnWhilePlaying(boolean screenOn) {
         return addTask(new Task(CALL_COMPLETED_SET_SCREEN_ON_WHILE_PLAYING, false) {
             @Override
             void process() {
@@ -1466,7 +1466,7 @@
      */
     // This is a synchronous call.
     @Override
-    public boolean setPreferredDevice(AudioDeviceInfo deviceInfo) {
+    public boolean setPreferredDevice(@Nullable AudioDeviceInfo deviceInfo) {
         boolean status = native_setPreferredDevice(deviceInfo);
         if (status) {
             synchronized (this) {
@@ -1483,7 +1483,7 @@
      * is not guaranteed to correspond to the actual device being used for playback.
      */
     @Override
-    public AudioDeviceInfo getPreferredDevice() {
+    public @Nullable AudioDeviceInfo getPreferredDevice() {
         synchronized (this) {
             return mPreferredDevice;
         }
@@ -1496,7 +1496,7 @@
      * selected device when the player was last active.
      */
     @Override
-    public native AudioDeviceInfo getRoutedDevice();
+    public @Nullable native AudioDeviceInfo getRoutedDevice();
 
     /**
      * Adds an {@link AudioRouting.OnRoutingChangedListener} to receive notifications of routing
@@ -1508,8 +1508,8 @@
      */
     // This is a synchronous call.
     @Override
-    public void addOnRoutingChangedListener(AudioRouting.OnRoutingChangedListener listener,
-            Handler handler) {
+    public void addOnRoutingChangedListener(@NonNull AudioRouting.OnRoutingChangedListener listener,
+            @Nullable Handler handler) {
         if (listener == null) {
             throw new IllegalArgumentException("addOnRoutingChangedListener: listener is NULL");
         }
@@ -1527,7 +1527,8 @@
      */
     // This is a synchronous call.
     @Override
-    public void removeOnRoutingChangedListener(AudioRouting.OnRoutingChangedListener listener) {
+    public void removeOnRoutingChangedListener(
+            @NonNull AudioRouting.OnRoutingChangedListener listener) {
         if (listener == null) {
             throw new IllegalArgumentException("removeOnRoutingChangedListener: listener is NULL");
         }
@@ -1547,7 +1548,7 @@
      * notification {@code EventCallback.onVideoSizeChanged} when the size
      * is available.
      */
-    public Size getVideoSize() {
+    public @NonNull Size getVideoSize() {
         return mVideoSize;
     }
 
@@ -1560,7 +1561,7 @@
      *
      * Additional vendor-specific fields may also be present in the return value.
      */
-    public PersistableBundle getMetrics() {
+    public @Nullable PersistableBundle getMetrics() {
         PersistableBundle bundle = native_getMetrics();
         return bundle;
     }
@@ -1592,7 +1593,7 @@
      */
     // TODO: make it public when ready
     // This is an asynchronous call.
-    Object setBufferingParams(@NonNull BufferingParams params) {
+    @NonNull Object setBufferingParams(@NonNull BufferingParams params) {
         return addTask(new Task(CALL_COMPLETED_SET_BUFFERING_PARAMS, false) {
             @Override
             void process() {
@@ -1614,7 +1615,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setPlaybackParams(@NonNull PlaybackParams params) {
+    public @NonNull Object setPlaybackParams(@NonNull PlaybackParams params) {
         return addTask(new Task(CALL_COMPLETED_SET_PLAYBACK_PARAMS, false) {
             @Override
             void process() {
@@ -1642,7 +1643,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setSyncParams(@NonNull SyncParams params) {
+    public @NonNull Object setSyncParams(@NonNull SyncParams params) {
         return addTask(new Task(CALL_COMPLETED_SET_SYNC_PARAMS, false) {
             @Override
             void process() {
@@ -1671,7 +1672,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object seekTo(long msec) {
+    public @NonNull Object seekTo(long msec) {
         return seekTo(msec, SEEK_PREVIOUS_SYNC /* mode */);
     }
 
@@ -1745,7 +1746,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object seekTo(long msec, @SeekMode int mode) {
+    public @NonNull Object seekTo(long msec, @SeekMode int mode) {
         return addTask(new Task(CALL_COMPLETED_SEEK_TO, true) {
             @Override
             void process() {
@@ -1846,7 +1847,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setAudioSessionId(int sessionId) {
+    public @NonNull Object setAudioSessionId(int sessionId) {
         final AudioTrack dummyAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, 44100,
                     AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT, 2,
                     AudioTrack.MODE_STATIC, sessionId);
@@ -1887,7 +1888,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object attachAuxEffect(int effectId) {
+    public @NonNull Object attachAuxEffect(int effectId) {
         return addTask(new Task(CALL_COMPLETED_ATTACH_AUX_EFFECT, false) {
             @Override
             void process() {
@@ -1912,7 +1913,7 @@
      * @return a token which can be used to cancel the operation later with {@link #cancelCommand}.
      */
     // This is an asynchronous call.
-    public Object setAuxEffectSendLevel(float level) {
+    public @NonNull Object setAuxEffectSendLevel(float level) {
         return addTask(new Task(CALL_COMPLETED_SET_AUX_EFFECT_SEND_LEVEL, false) {
             @Override
             void process() {
@@ -1984,7 +1985,7 @@
          * When the language is unknown or could not be determined,
          * ISO-639-2 language code, "und", is returned.
          */
-        public String getLanguage() {
+        public @Nullable String getLanguage() {
             String language = mFormat.getString(MediaFormat.KEY_LANGUAGE);
             return language == null ? "und" : language;
         }
@@ -1993,7 +1994,7 @@
          * Gets the {@link MediaFormat} of the track.  If the format is
          * unknown or could not be determined, null is returned.
          */
-        public MediaFormat getFormat() {
+        public @Nullable MediaFormat getFormat() {
             if (mTrackType == MEDIA_TRACK_TYPE_TIMEDTEXT
                     || mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) {
                 return mFormat;
@@ -2201,7 +2202,7 @@
      * @see MediaPlayer2#getTrackInfo()
      */
     // This is an asynchronous call.
-    public Object selectTrack(int index) {
+    public @NonNull Object selectTrack(int index) {
         return selectTrack(getCurrentDataSource(), index);
     }
 
@@ -2235,7 +2236,7 @@
      * @see MediaPlayer2#getTrackInfo(DataSourceDesc)
      */
     // This is an asynchronous call.
-    public Object selectTrack(@NonNull DataSourceDesc dsd, int index) {
+    public @NonNull Object selectTrack(@NonNull DataSourceDesc dsd, int index) {
         return addTask(new Task(CALL_COMPLETED_SELECT_TRACK, false) {
             @Override
             void process() {
@@ -2257,7 +2258,7 @@
      * @see MediaPlayer2#getTrackInfo()
      */
     // This is an asynchronous call.
-    public Object deselectTrack(int index) {
+    public @NonNull Object deselectTrack(int index) {
         return deselectTrack(getCurrentDataSource(), index);
     }
 
@@ -2277,7 +2278,7 @@
      * @see MediaPlayer2#getTrackInfo(DataSourceDesc)
      */
     // This is an asynchronous call.
-    public Object deselectTrack(@NonNull DataSourceDesc dsd, int index) {
+    public @NonNull Object deselectTrack(@NonNull DataSourceDesc dsd, int index) {
         return addTask(new Task(CALL_COMPLETED_DESELECT_TRACK, false) {
             @Override
             void process() {
@@ -2928,7 +2929,7 @@
      * @param eventCallback the callback to be unregistered
      */
     // This is a synchronous call.
-    public void unregisterEventCallback(EventCallback eventCallback) {
+    public void unregisterEventCallback(@NonNull EventCallback eventCallback) {
         synchronized (mEventCbLock) {
             for (Pair<Executor, EventCallback> cb : mEventCallbackRecords) {
                 if (cb.second == eventCallback) {
@@ -3850,7 +3851,7 @@
      */
     // This is an asynchronous call.
     @TestApi
-    public Object prepareDrm(@NonNull DataSourceDesc dsd, @NonNull UUID uuid) {
+    public @NonNull Object prepareDrm(@NonNull DataSourceDesc dsd, @NonNull UUID uuid) {
         return addTask(newPrepareDrmTask(dsd, uuid));
     }
 
diff --git a/media/apex/java/android/media/UriDataSourceDesc.java b/media/apex/java/android/media/UriDataSourceDesc.java
index 4eb9e8d..c0b3c82 100644
--- a/media/apex/java/android/media/UriDataSourceDesc.java
+++ b/media/apex/java/android/media/UriDataSourceDesc.java
@@ -51,7 +51,7 @@
      * Return the Uri of this data source.
      * @return the Uri of this data source
      */
-    public Uri getUri() {
+    public @NonNull Uri getUri() {
         return mUri;
     }
 
@@ -59,7 +59,7 @@
      * Return the Uri headers of this data source.
      * @return the Uri headers of this data source
      */
-    public Map<String, String> getHeaders() {
+    public @Nullable Map<String, String> getHeaders() {
         if (mHeader == null) {
             return null;
         }
@@ -70,7 +70,7 @@
      * Return the Uri cookies of this data source.
      * @return the Uri cookies of this data source
      */
-    public List<HttpCookie> getCookies() {
+    public @Nullable List<HttpCookie> getCookies() {
         if (mCookies == null) {
             return null;
         }
@@ -81,7 +81,7 @@
      * Return the Context used for resolving the Uri of this data source.
      * @return the Context used for resolving the Uri of this data source
      */
-    public Context getContext() {
+    public @NonNull Context getContext() {
         return mContext;
     }
 
@@ -117,7 +117,7 @@
          * @param dsd the {@link UriDataSourceDesc} object whose data will be reused
          * in the new Builder.
          */
-        public Builder(UriDataSourceDesc dsd) {
+        public Builder(@Nullable UriDataSourceDesc dsd) {
             super(dsd);
             if (dsd == null) {
                 return;  // use default
@@ -136,6 +136,11 @@
          * @return a new {@link UriDataSourceDesc} object
          */
         public @NonNull UriDataSourceDesc build() {
+            if (mUri == null || mContext == null) {
+                throw new IllegalStateException(
+                        "Uri and Context should not be null");
+            }
+
             UriDataSourceDesc dsd = new UriDataSourceDesc();
             super.build(dsd);
             dsd.mUri = mUri;
diff --git a/media/java/android/media/AudioManager.java b/media/java/android/media/AudioManager.java
index 15f9b47..669baea 100644
--- a/media/java/android/media/AudioManager.java
+++ b/media/java/android/media/AudioManager.java
@@ -4068,6 +4068,10 @@
      /**
      * Indicate Hearing Aid connection state change and eventually suppress
      * the {@link AudioManager.ACTION_AUDIO_BECOMING_NOISY} intent.
+     * This operation is asynchronous but its execution will still be sequentially scheduled
+     * relative to calls to {@link #setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
+     * * BluetoothDevice, int, int, boolean, int)} and
+     * and {@link #handleBluetoothA2dpDeviceConfigChange(BluetoothDevice)}.
      * @param device Bluetooth device connected/disconnected
      * @param state new connection state (BluetoothProfile.STATE_xxx)
      * @param musicDevice Default get system volume for the connecting device.
@@ -4075,27 +4079,27 @@
      * {@link android.bluetooth.BluetoothProfile.HEARING_AID})
      * @param suppressNoisyIntent if true the
      * {@link AudioManager.ACTION_AUDIO_BECOMING_NOISY} intent will not be sent.
-     * @return a delay in ms that the caller should wait before broadcasting
-     * BluetoothHearingAid.ACTION_CONNECTION_STATE_CHANGED intent.
      * {@hide}
      */
-    public int setBluetoothHearingAidDeviceConnectionState(
+    public void setBluetoothHearingAidDeviceConnectionState(
                 BluetoothDevice device, int state, boolean suppressNoisyIntent,
                 int musicDevice) {
         final IAudioService service = getService();
-        int delay = 0;
         try {
-            delay = service.setBluetoothHearingAidDeviceConnectionState(device,
+            service.setBluetoothHearingAidDeviceConnectionState(device,
                 state, suppressNoisyIntent, musicDevice);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
-        return delay;
     }
 
      /**
      * Indicate A2DP source or sink connection state change and eventually suppress
      * the {@link AudioManager.ACTION_AUDIO_BECOMING_NOISY} intent.
+     * This operation is asynchronous but its execution will still be sequentially scheduled
+     * relative to calls to {@link #setBluetoothHearingAidDeviceConnectionState(BluetoothDevice,
+     * int, boolean, int)} and
+     * {@link #handleBluetoothA2dpDeviceConfigChange(BluetoothDevice)}.
      * @param device Bluetooth device connected/disconnected
      * @param state  new connection state, {@link BluetoothProfile#STATE_CONNECTED}
      *     or {@link BluetoothProfile#STATE_DISCONNECTED}
@@ -4105,26 +4109,27 @@
      * {@link android.bluetooth.BluetoothProfile.A2DP_SINK})
      * @param suppressNoisyIntent if true the
      * {@link AudioManager.ACTION_AUDIO_BECOMING_NOISY} intent will not be sent.
-     * @return a delay in ms that the caller should wait before broadcasting
-     * BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED intent.
      * {@hide}
      */
-    public int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
+    public void setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
             BluetoothDevice device, int state,
             int profile, boolean suppressNoisyIntent, int a2dpVolume) {
         final IAudioService service = getService();
-        int delay = 0;
         try {
-            delay = service.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(device,
+            service.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(device,
                 state, profile, suppressNoisyIntent, a2dpVolume);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
-        return delay;
     }
 
      /**
      * Indicate A2DP device configuration has changed.
+     * This operation is asynchronous but its execution will still be sequentially scheduled
+     * relative to calls to
+     * {@link #setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(BluetoothDevice, int, int,
+     * boolean, int)} and
+     * {@link #setBluetoothHearingAidDeviceConnectionState(BluetoothDevice, int, boolean, int)}
      * @param device Bluetooth device whose configuration has changed.
      * {@hide}
      */
diff --git a/media/java/android/media/HwAudioSource.java b/media/java/android/media/HwAudioSource.java
index 8bdb8a6..d9be0a5 100644
--- a/media/java/android/media/HwAudioSource.java
+++ b/media/java/android/media/HwAudioSource.java
@@ -165,7 +165,7 @@
      * If the audio attributes are not set with {@link #setAudioAttributes(AudioAttributes)},
      * attributes comprising {@link AudioAttributes#USAGE_MEDIA} will be used.
      */
-    public static class Builder {
+    public static final class Builder {
         private AudioAttributes mAudioAttributes;
         private AudioDeviceInfo mAudioDeviceInfo;
 
diff --git a/media/java/android/media/IAudioService.aidl b/media/java/android/media/IAudioService.aidl
index 1b82fcc..0285667 100644
--- a/media/java/android/media/IAudioService.aidl
+++ b/media/java/android/media/IAudioService.aidl
@@ -228,10 +228,10 @@
 
     oneway void playerHasOpPlayAudio(in int piid, in boolean hasOpPlayAudio);
 
-    int setBluetoothHearingAidDeviceConnectionState(in BluetoothDevice device,
+    void setBluetoothHearingAidDeviceConnectionState(in BluetoothDevice device,
             int state, boolean suppressNoisyIntent, int musicDevice);
 
-    int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(in BluetoothDevice device,
+    void setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(in BluetoothDevice device,
             int state, int profile, boolean suppressNoisyIntent, int a2dpVolume);
 
     oneway void setFocusRequestResultFromExtPolicy(in AudioFocusInfo afi, int requestResult,
diff --git a/media/java/android/media/MediaTimestamp.java b/media/java/android/media/MediaTimestamp.java
index 03e454c..da3362a 100644
--- a/media/java/android/media/MediaTimestamp.java
+++ b/media/java/android/media/MediaTimestamp.java
@@ -134,7 +134,7 @@
      * @hide
      */
     @SystemApi
-    public static class Builder {
+    public static final class Builder {
         long mMediaTimeUs;
         long mNanoTime;
         float mClockRate = 1.0f;
diff --git a/media/java/android/media/PlayerBase.java b/media/java/android/media/PlayerBase.java
index fbe5152..b302b06 100644
--- a/media/java/android/media/PlayerBase.java
+++ b/media/java/android/media/PlayerBase.java
@@ -571,13 +571,12 @@
     // Utilities
 
     /**
+     * @hide
      * Use to generate warning or exception in legacy code paths that allowed passing stream types
      * to qualify audio playback.
      * @param streamType the stream type to check
      * @throws IllegalArgumentException
-     * @deprecated This method is not intended to be used by applications.
      */
-    @java.lang.Deprecated
     public static void deprecateStreamTypeForPlayback(int streamType, @NonNull String className,
             @NonNull String opName) throws IllegalArgumentException {
         // STREAM_ACCESSIBILITY was introduced at the same time the use of stream types
diff --git a/media/java/android/media/SubtitleData.java b/media/java/android/media/SubtitleData.java
index 852babe..31622a9 100644
--- a/media/java/android/media/SubtitleData.java
+++ b/media/java/android/media/SubtitleData.java
@@ -155,7 +155,7 @@
      * @hide
      */
     @SystemApi
-    public static class Builder {
+    public static final class Builder {
         private int mTrackIndex;
         private long mStartTimeUs;
         private long mDurationUs;
diff --git a/media/java/android/media/TimedMetaData.java b/media/java/android/media/TimedMetaData.java
index 2a89888..990760c 100644
--- a/media/java/android/media/TimedMetaData.java
+++ b/media/java/android/media/TimedMetaData.java
@@ -104,7 +104,7 @@
      * @hide
      */
     @SystemApi
-    public static class Builder {
+    public static final class Builder {
         private long mTimestampUs;
         private byte[] mMetaData = new byte[0];
 
diff --git a/media/java/android/media/audiopolicy/AudioProductStrategies.java b/media/java/android/media/audiopolicy/AudioProductStrategies.java
index 98b6d97..c305b68 100644
--- a/media/java/android/media/audiopolicy/AudioProductStrategies.java
+++ b/media/java/android/media/audiopolicy/AudioProductStrategies.java
@@ -85,7 +85,7 @@
      * Returns an {@link Iterator}
      */
     @Override
-    public Iterator<AudioProductStrategy> iterator() {
+    public @NonNull Iterator<AudioProductStrategy> iterator() {
         return mAudioProductStrategyList.iterator();
     }
 
diff --git a/media/java/android/media/audiopolicy/AudioVolumeGroup.java b/media/java/android/media/audiopolicy/AudioVolumeGroup.java
index 0b4ba93..b60947f 100644
--- a/media/java/android/media/audiopolicy/AudioVolumeGroup.java
+++ b/media/java/android/media/audiopolicy/AudioVolumeGroup.java
@@ -77,7 +77,7 @@
     /**
      * @return List of {@link AudioAttributes} involved in this {@link AudioVolumeGroup}.
      */
-    public List<AudioAttributes> getAudioAttributes() {
+    public @NonNull List<AudioAttributes> getAudioAttributes() {
         return Arrays.asList(mAudioAttributes);
     }
 
diff --git a/media/java/android/media/audiopolicy/AudioVolumeGroups.java b/media/java/android/media/audiopolicy/AudioVolumeGroups.java
index 301bec7..2e56f84 100644
--- a/media/java/android/media/audiopolicy/AudioVolumeGroups.java
+++ b/media/java/android/media/audiopolicy/AudioVolumeGroups.java
@@ -70,7 +70,7 @@
      * Returns an {@link Iterator}
      */
     @Override
-    public Iterator<AudioVolumeGroup> iterator() {
+    public @NonNull Iterator<AudioVolumeGroup> iterator() {
         return mAudioVolumeGroupList.iterator();
     }
 
diff --git a/media/tests/MediaFrameworkTest/Android.mk b/media/tests/MediaFrameworkTest/Android.mk
index fb473f0..167d255 100644
--- a/media/tests/MediaFrameworkTest/Android.mk
+++ b/media/tests/MediaFrameworkTest/Android.mk
@@ -9,7 +9,7 @@
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
     mockito-target-minus-junit4 \
-    android-support-test \
+    androidx.test.rules \
     android-ex-camera2
 
 LOCAL_PACKAGE_NAME := mediaframeworktest
diff --git a/media/tests/MediaFrameworkTest/AndroidManifest.xml b/media/tests/MediaFrameworkTest/AndroidManifest.xml
index e50a375..fb2d630 100644
--- a/media/tests/MediaFrameworkTest/AndroidManifest.xml
+++ b/media/tests/MediaFrameworkTest/AndroidManifest.xml
@@ -86,7 +86,7 @@
             android:label="MediaFramework integration tests InstrumentationRunner">
     </instrumentation>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
             android:targetPackage="com.android.mediaframeworktest"
             android:label="media framework tests">
     </instrumentation>
diff --git a/media/tests/MediaFrameworkTest/AndroidTest.xml b/media/tests/MediaFrameworkTest/AndroidTest.xml
index 204959f..132028c 100644
--- a/media/tests/MediaFrameworkTest/AndroidTest.xml
+++ b/media/tests/MediaFrameworkTest/AndroidTest.xml
@@ -21,7 +21,7 @@
     <option name="test-tag" value="MediaFrameworkTest" />
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.mediaframeworktest" />
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
         <option name="hidden-api-checks" value="false"/>
     </test>
 </configuration>
diff --git a/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/integration/CameraBinderTest.java b/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/integration/CameraBinderTest.java
index d8c975f..87a59df 100644
--- a/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/integration/CameraBinderTest.java
+++ b/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/integration/CameraBinderTest.java
@@ -309,6 +309,10 @@
             Log.v(TAG, String.format("Camera %s has torch status changed to 0x%x",
                     cameraId, status));
         }
+        @Override
+        public void onCameraAccessPrioritiesChanged() {
+            Log.v(TAG, "Camera access permission change");
+        }
     }
 
     /**
diff --git a/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/unit/MediaFileTest.java b/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/unit/MediaFileTest.java
index feac63d..701454c 100644
--- a/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/unit/MediaFileTest.java
+++ b/media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/unit/MediaFileTest.java
@@ -28,7 +28,8 @@
 import static org.junit.Assert.assertTrue;
 
 import android.mtp.MtpConstants;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.runner.AndroidJUnit4;
 
 import libcore.net.MimeUtils;
 
diff --git a/packages/SystemUI/res/drawable/ic_volume_remote.xml b/packages/SettingsLib/res/drawable/ic_volume_remote.xml
similarity index 100%
rename from packages/SystemUI/res/drawable/ic_volume_remote.xml
rename to packages/SettingsLib/res/drawable/ic_volume_remote.xml
diff --git a/packages/SystemUI/res/drawable/ic_volume_remote_mute.xml b/packages/SettingsLib/res/drawable/ic_volume_remote_mute.xml
similarity index 100%
rename from packages/SystemUI/res/drawable/ic_volume_remote_mute.xml
rename to packages/SettingsLib/res/drawable/ic_volume_remote_mute.xml
diff --git a/packages/SettingsLib/src/com/android/settingslib/volume/D.java b/packages/SettingsLib/src/com/android/settingslib/volume/D.java
new file mode 100644
index 0000000..7e0654d
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/volume/D.java
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settingslib.volume;
+
+import android.util.Log;
+
+class D {
+    public static boolean BUG = Log.isLoggable("volume", Log.DEBUG);
+}
diff --git a/packages/SystemUI/src/com/android/systemui/volume/MediaSessions.java b/packages/SettingsLib/src/com/android/settingslib/volume/MediaSessions.java
similarity index 84%
rename from packages/SystemUI/src/com/android/systemui/volume/MediaSessions.java
rename to packages/SettingsLib/src/com/android/settingslib/volume/MediaSessions.java
index 8b00eee..4ed1154 100644
--- a/packages/SystemUI/src/com/android/systemui/volume/MediaSessions.java
+++ b/packages/SettingsLib/src/com/android/settingslib/volume/MediaSessions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2015 The Android Open Source Project
+ * Copyright (C) 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.systemui.volume;
+package com.android.settingslib.volume;
 
 import android.app.PendingIntent;
 import android.content.Context;
@@ -27,7 +27,6 @@
 import android.media.MediaMetadata;
 import android.media.session.MediaController;
 import android.media.session.MediaController.PlaybackInfo;
-import android.media.session.MediaSession;
 import android.media.session.MediaSession.QueueItem;
 import android.media.session.MediaSession.Token;
 import android.media.session.MediaSessionManager;
@@ -41,7 +40,6 @@
 import android.util.Log;
 
 import java.io.PrintWriter;
-import java.io.StringWriter;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -73,16 +71,24 @@
         mCallbacks = callbacks;
     }
 
+    /**
+     * Dump to {@code writer}
+     */
     public void dump(PrintWriter writer) {
         writer.println(getClass().getSimpleName() + " state:");
-        writer.print("  mInit: "); writer.println(mInit);
-        writer.print("  mRecords.size: "); writer.println(mRecords.size());
+        writer.print("  mInit: ");
+        writer.println(mInit);
+        writer.print("  mRecords.size: ");
+        writer.println(mRecords.size());
         int i = 0;
         for (MediaControllerRecord r : mRecords.values()) {
             dump(++i, writer, r.controller);
         }
     }
 
+    /**
+     * init MediaSessions
+     */
     public void init() {
         if (D.BUG) Log.d(TAG, "init");
         // will throw if no permission
@@ -97,12 +103,18 @@
         mHandler.sendEmptyMessage(H.UPDATE_SESSIONS);
     }
 
+    /**
+     * Destroy MediaSessions
+     */
     public void destroy() {
         if (D.BUG) Log.d(TAG, "destroy");
         mInit = false;
         mMgr.removeOnActiveSessionsChangedListener(mSessionsListener);
     }
 
+    /**
+     * Set volume {@code level} to remote media {@code token}
+     */
     public void setVolume(Token token, int level) {
         final MediaControllerRecord r = mRecords.get(token);
         if (r == null) {
@@ -113,15 +125,17 @@
         r.controller.setVolumeTo(level, 0);
     }
 
-    private void onRemoteVolumeChangedH(MediaSession.Token sessionToken, int flags) {
+    private void onRemoteVolumeChangedH(Token sessionToken, int flags) {
         final MediaController controller = new MediaController(mContext, sessionToken);
-        if (D.BUG) Log.d(TAG, "remoteVolumeChangedH " + controller.getPackageName() + " "
-                + Util.audioManagerFlagsToString(flags));
+        if (D.BUG) {
+            Log.d(TAG, "remoteVolumeChangedH " + controller.getPackageName() + " "
+                    + Util.audioManagerFlagsToString(flags));
+        }
         final Token token = controller.getSessionToken();
         mCallbacks.onRemoteVolumeChanged(token, flags);
     }
 
-    private void onUpdateRemoteControllerH(MediaSession.Token sessionToken) {
+    private void onUpdateRemoteControllerH(Token sessionToken) {
         final MediaController controller =
                 sessionToken != null ? new MediaController(mContext, sessionToken) : null;
         final String pkg = controller != null ? controller.getPackageName() : null;
@@ -191,7 +205,8 @@
             if (appLabel.length() > 0) {
                 return appLabel;
             }
-        } catch (NameNotFoundException e) { }
+        } catch (NameNotFoundException e) {
+        }
         return pkg;
     }
 
@@ -240,29 +255,11 @@
         }
     }
 
-    public static void dumpMediaSessions(Context context) {
-        final MediaSessionManager mgr = (MediaSessionManager) context
-                .getSystemService(Context.MEDIA_SESSION_SERVICE);
-        try {
-            final List<MediaController> controllers = mgr.getActiveSessions(null);
-            final int N = controllers.size();
-            if (D.BUG) Log.d(TAG, N + " controllers");
-            for (int i = 0; i < N; i++) {
-                final StringWriter sw = new StringWriter();
-                final PrintWriter pw = new PrintWriter(sw, true);
-                dump(i + 1, pw, controllers.get(i));
-                if (D.BUG) Log.d(TAG, sw.toString());
-            }
-        } catch (SecurityException e) {
-            Log.w(TAG, "Not allowed to get sessions", e);
-        }
-    }
-
     private final class MediaControllerRecord extends MediaController.Callback {
-        private final MediaController controller;
+        public final MediaController controller;
 
-        private boolean sentRemote;
-        private String name;
+        public boolean sentRemote;
+        public String name;
 
         private MediaControllerRecord(MediaController controller) {
             this.controller = controller;
@@ -274,8 +271,10 @@
 
         @Override
         public void onAudioInfoChanged(PlaybackInfo info) {
-            if (D.BUG) Log.d(TAG, cb("onAudioInfoChanged") + Util.playbackInfoToString(info)
-                    + " sentRemote=" + sentRemote);
+            if (D.BUG) {
+                Log.d(TAG, cb("onAudioInfoChanged") + Util.playbackInfoToString(info)
+                        + " sentRemote=" + sentRemote);
+            }
             final boolean remote = isRemote(info);
             if (!remote && sentRemote) {
                 mCallbacks.onRemoteRemoved(controller.getSessionToken());
@@ -324,22 +323,22 @@
 
     private final OnActiveSessionsChangedListener mSessionsListener =
             new OnActiveSessionsChangedListener() {
-        @Override
-        public void onActiveSessionsChanged(List<MediaController> controllers) {
-            onActiveSessionsUpdatedH(controllers);
-        }
-    };
+                @Override
+                public void onActiveSessionsChanged(List<MediaController> controllers) {
+                    onActiveSessionsUpdatedH(controllers);
+                }
+            };
 
     private final IRemoteVolumeController mRvc = new IRemoteVolumeController.Stub() {
         @Override
-        public void remoteVolumeChanged(MediaSession.Token sessionToken, int flags)
+        public void remoteVolumeChanged(Token sessionToken, int flags)
                 throws RemoteException {
             mHandler.obtainMessage(H.REMOTE_VOLUME_CHANGED, flags, 0,
                     sessionToken).sendToTarget();
         }
 
         @Override
-        public void updateRemoteController(final MediaSession.Token sessionToken)
+        public void updateRemoteController(final Token sessionToken)
                 throws RemoteException {
             mHandler.obtainMessage(H.UPDATE_REMOTE_CONTROLLER, sessionToken).sendToTarget();
         }
@@ -361,18 +360,32 @@
                     onActiveSessionsUpdatedH(mMgr.getActiveSessions(null));
                     break;
                 case REMOTE_VOLUME_CHANGED:
-                    onRemoteVolumeChangedH((MediaSession.Token) msg.obj, msg.arg1);
+                    onRemoteVolumeChangedH((Token) msg.obj, msg.arg1);
                     break;
                 case UPDATE_REMOTE_CONTROLLER:
-                    onUpdateRemoteControllerH((MediaSession.Token) msg.obj);
+                    onUpdateRemoteControllerH((Token) msg.obj);
                     break;
             }
         }
     }
 
+    /**
+     * Callback for remote media sessions
+     */
     public interface Callbacks {
+        /**
+         * Invoked when remote media session is updated
+         */
         void onRemoteUpdate(Token token, String name, PlaybackInfo pi);
+
+        /**
+         * Invoked when remote media session is removed
+         */
         void onRemoteRemoved(Token t);
+
+        /**
+         * Invoked when remote volume is changed
+         */
         void onRemoteVolumeChanged(Token token, int flags);
     }
 
diff --git a/packages/SettingsLib/src/com/android/settingslib/volume/Util.java b/packages/SettingsLib/src/com/android/settingslib/volume/Util.java
new file mode 100644
index 0000000..4e770ae
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/volume/Util.java
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settingslib.volume;
+
+import android.content.Context;
+import android.media.AudioManager;
+import android.media.MediaMetadata;
+import android.media.VolumeProvider;
+import android.media.session.MediaController.PlaybackInfo;
+import android.media.session.PlaybackState;
+import android.telephony.TelephonyManager;
+import android.widget.TextView;
+
+import java.util.Objects;
+
+/**
+ * Static helpers for the volume dialog.
+ */
+public class Util {
+
+    private static final int[] AUDIO_MANAGER_FLAGS = new int[]{
+            AudioManager.FLAG_SHOW_UI,
+            AudioManager.FLAG_VIBRATE,
+            AudioManager.FLAG_PLAY_SOUND,
+            AudioManager.FLAG_ALLOW_RINGER_MODES,
+            AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE,
+            AudioManager.FLAG_SHOW_VIBRATE_HINT,
+            AudioManager.FLAG_SHOW_SILENT_HINT,
+            AudioManager.FLAG_FROM_KEY,
+            AudioManager.FLAG_SHOW_UI_WARNINGS,
+    };
+
+    private static final String[] AUDIO_MANAGER_FLAG_NAMES = new String[]{
+            "SHOW_UI",
+            "VIBRATE",
+            "PLAY_SOUND",
+            "ALLOW_RINGER_MODES",
+            "REMOVE_SOUND_AND_VIBRATE",
+            "SHOW_VIBRATE_HINT",
+            "SHOW_SILENT_HINT",
+            "FROM_KEY",
+            "SHOW_UI_WARNINGS",
+    };
+
+    /**
+     * Extract log tag from {@code c}
+     */
+    public static String logTag(Class<?> c) {
+        final String tag = "vol." + c.getSimpleName();
+        return tag.length() < 23 ? tag : tag.substring(0, 23);
+    }
+
+    /**
+     * Convert media metadata to string
+     */
+    public static String mediaMetadataToString(MediaMetadata metadata) {
+        if (metadata == null) return null;
+        return metadata.getDescription().toString();
+    }
+
+    /**
+     * Convert playback info to string
+     */
+    public static String playbackInfoToString(PlaybackInfo info) {
+        if (info == null) return null;
+        final String type = playbackInfoTypeToString(info.getPlaybackType());
+        final String vc = volumeProviderControlToString(info.getVolumeControl());
+        return String.format("PlaybackInfo[vol=%s,max=%s,type=%s,vc=%s],atts=%s",
+                info.getCurrentVolume(), info.getMaxVolume(), type, vc, info.getAudioAttributes());
+    }
+
+    /**
+     * Convert type of playback info to string
+     */
+    public static String playbackInfoTypeToString(int type) {
+        switch (type) {
+            case PlaybackInfo.PLAYBACK_TYPE_LOCAL:
+                return "LOCAL";
+            case PlaybackInfo.PLAYBACK_TYPE_REMOTE:
+                return "REMOTE";
+            default:
+                return "UNKNOWN_" + type;
+        }
+    }
+
+    /**
+     * Convert state of playback info to string
+     */
+    public static String playbackStateStateToString(int state) {
+        switch (state) {
+            case PlaybackState.STATE_NONE:
+                return "STATE_NONE";
+            case PlaybackState.STATE_STOPPED:
+                return "STATE_STOPPED";
+            case PlaybackState.STATE_PAUSED:
+                return "STATE_PAUSED";
+            case PlaybackState.STATE_PLAYING:
+                return "STATE_PLAYING";
+            default:
+                return "UNKNOWN_" + state;
+        }
+    }
+
+    /**
+     * Convert volume provider control to string
+     */
+    public static String volumeProviderControlToString(int control) {
+        switch (control) {
+            case VolumeProvider.VOLUME_CONTROL_ABSOLUTE:
+                return "VOLUME_CONTROL_ABSOLUTE";
+            case VolumeProvider.VOLUME_CONTROL_FIXED:
+                return "VOLUME_CONTROL_FIXED";
+            case VolumeProvider.VOLUME_CONTROL_RELATIVE:
+                return "VOLUME_CONTROL_RELATIVE";
+            default:
+                return "VOLUME_CONTROL_UNKNOWN_" + control;
+        }
+    }
+
+    /**
+     * Convert {@link PlaybackState} to string
+     */
+    public static String playbackStateToString(PlaybackState playbackState) {
+        if (playbackState == null) return null;
+        return playbackStateStateToString(playbackState.getState()) + " " + playbackState;
+    }
+
+    /**
+     * Convert audio manager flags to string
+     */
+    public static String audioManagerFlagsToString(int value) {
+        return bitFieldToString(value, AUDIO_MANAGER_FLAGS, AUDIO_MANAGER_FLAG_NAMES);
+    }
+
+    protected static String bitFieldToString(int value, int[] values, String[] names) {
+        if (value == 0) return "";
+        final StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < values.length; i++) {
+            if ((value & values[i]) != 0) {
+                if (sb.length() > 0) sb.append(',');
+                sb.append(names[i]);
+            }
+            value &= ~values[i];
+        }
+        if (value != 0) {
+            if (sb.length() > 0) sb.append(',');
+            sb.append("UNKNOWN_").append(value);
+        }
+        return sb.toString();
+    }
+
+    private static CharSequence emptyToNull(CharSequence str) {
+        return str == null || str.length() == 0 ? null : str;
+    }
+
+    /**
+     * Set text for specific {@link TextView}
+     */
+    public static boolean setText(TextView tv, CharSequence text) {
+        if (Objects.equals(emptyToNull(tv.getText()), emptyToNull(text))) return false;
+        tv.setText(text);
+        return true;
+    }
+
+    /**
+     * Return {@code true} if it is voice capable
+     */
+    public static boolean isVoiceCapable(Context context) {
+        final TelephonyManager telephony =
+                (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        return telephony != null && telephony.isVoiceCapable();
+    }
+}
diff --git a/packages/SystemUI/res-keyguard/drawable-xxxhdpi/default_preview.png b/packages/SystemUI/res-keyguard/drawable-xxxhdpi/default_preview.png
deleted file mode 100644
index 035a4df..0000000
--- a/packages/SystemUI/res-keyguard/drawable-xxxhdpi/default_preview.png
+++ /dev/null
Binary files differ
diff --git a/packages/SystemUI/res/layout/screen_pinning_request_text_area.xml b/packages/SystemUI/res/layout/screen_pinning_request_text_area.xml
index cdad94b..8dcddc2 100644
--- a/packages/SystemUI/res/layout/screen_pinning_request_text_area.xml
+++ b/packages/SystemUI/res/layout/screen_pinning_request_text_area.xml
@@ -31,7 +31,7 @@
         android:paddingStart="48dp"
         android:paddingTop="43dp"
         android:text="@string/screen_pinning_title"
-        android:textColor="@color/screen_pinning_primary_text"
+        android:textColor="@android:color/white"
         android:textSize="24sp" />
 
     <TextView
@@ -43,7 +43,7 @@
         android:paddingStart="48dp"
         android:paddingTop="12.6dp"
         android:text="@string/screen_pinning_description"
-        android:textColor="@color/screen_pinning_primary_text"
+        android:textColor="@android:color/white"
         android:textSize="16sp" />
 
     <Button
diff --git a/packages/SystemUI/res/values/internal.xml b/packages/SystemUI/res/values/internal.xml
index e0d3cd2..930cfce 100644
--- a/packages/SystemUI/res/values/internal.xml
+++ b/packages/SystemUI/res/values/internal.xml
@@ -18,6 +18,5 @@
     <dimen name="status_bar_height">@*android:dimen/status_bar_height</dimen>
     <dimen name="navigation_bar_height">@*android:dimen/navigation_bar_height</dimen>
     <dimen name="navigation_bar_height_car_mode">@*android:dimen/navigation_bar_height_car_mode</dimen>
-    <color name="screen_pinning_primary_text">@*android:color/primary_text_default_material_light</color>
 </resources>
 
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitch.java b/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitch.java
index 563b007..507c822 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitch.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitch.java
@@ -148,6 +148,7 @@
         Dependency.get(StatusBarStateController.class).removeCallback(mStateListener);
         Dependency.get(SysuiColorExtractor.class)
             .removeOnColorsChangedListener(mColorsListener);
+        setClockPlugin(null);
     }
 
     private void setClockPlugin(ClockPlugin plugin) {
diff --git a/packages/SystemUI/src/com/android/systemui/volume/Util.java b/packages/SystemUI/src/com/android/systemui/volume/Util.java
index c6d6218..7edb5a5 100644
--- a/packages/SystemUI/src/com/android/systemui/volume/Util.java
+++ b/packages/SystemUI/src/com/android/systemui/volume/Util.java
@@ -16,52 +16,13 @@
 
 package com.android.systemui.volume;
 
-import android.content.Context;
 import android.media.AudioManager;
-import android.media.MediaMetadata;
-import android.media.VolumeProvider;
-import android.media.session.MediaController.PlaybackInfo;
-import android.media.session.PlaybackState;
-import android.telephony.TelephonyManager;
 import android.view.View;
-import android.widget.TextView;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.Locale;
-import java.util.Objects;
 
 /**
  * Static helpers for the volume dialog.
  */
-class Util {
-
-    // Note: currently not shown (only used in the text footer)
-    private static final SimpleDateFormat HMMAA = new SimpleDateFormat("h:mm aa", Locale.US);
-
-    private static int[] AUDIO_MANAGER_FLAGS = new int[] {
-        AudioManager.FLAG_SHOW_UI,
-        AudioManager.FLAG_VIBRATE,
-        AudioManager.FLAG_PLAY_SOUND,
-        AudioManager.FLAG_ALLOW_RINGER_MODES,
-        AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE,
-        AudioManager.FLAG_SHOW_VIBRATE_HINT,
-        AudioManager.FLAG_SHOW_SILENT_HINT,
-        AudioManager.FLAG_FROM_KEY,
-        AudioManager.FLAG_SHOW_UI_WARNINGS,
-    };
-
-    private static String[] AUDIO_MANAGER_FLAG_NAMES = new String[] {
-        "SHOW_UI",
-        "VIBRATE",
-        "PLAY_SOUND",
-        "ALLOW_RINGER_MODES",
-        "REMOVE_SOUND_AND_VIBRATE",
-        "SHOW_VIBRATE_HINT",
-        "SHOW_SILENT_HINT",
-        "FROM_KEY",
-        "SHOW_UI_WARNINGS",
-    };
+class Util extends com.android.settingslib.volume.Util {
 
     public static String logTag(Class<?> c) {
         final String tag = "vol." + c.getSimpleName();
@@ -70,106 +31,19 @@
 
     public static String ringerModeToString(int ringerMode) {
         switch (ringerMode) {
-            case AudioManager.RINGER_MODE_SILENT: return "RINGER_MODE_SILENT";
-            case AudioManager.RINGER_MODE_VIBRATE: return "RINGER_MODE_VIBRATE";
-            case AudioManager.RINGER_MODE_NORMAL: return "RINGER_MODE_NORMAL";
-            default: return "RINGER_MODE_UNKNOWN_" + ringerMode;
+            case AudioManager.RINGER_MODE_SILENT:
+                return "RINGER_MODE_SILENT";
+            case AudioManager.RINGER_MODE_VIBRATE:
+                return "RINGER_MODE_VIBRATE";
+            case AudioManager.RINGER_MODE_NORMAL:
+                return "RINGER_MODE_NORMAL";
+            default:
+                return "RINGER_MODE_UNKNOWN_" + ringerMode;
         }
     }
 
-    public static String mediaMetadataToString(MediaMetadata metadata) {
-        if (metadata == null) return null;
-        return metadata.getDescription().toString();
-    }
-
-    public static String playbackInfoToString(PlaybackInfo info) {
-        if (info == null) return null;
-        final String type = playbackInfoTypeToString(info.getPlaybackType());
-        final String vc = volumeProviderControlToString(info.getVolumeControl());
-        return String.format("PlaybackInfo[vol=%s,max=%s,type=%s,vc=%s],atts=%s",
-                info.getCurrentVolume(), info.getMaxVolume(), type, vc, info.getAudioAttributes());
-    }
-
-    public static String playbackInfoTypeToString(int type) {
-        switch (type) {
-            case PlaybackInfo.PLAYBACK_TYPE_LOCAL: return "LOCAL";
-            case PlaybackInfo.PLAYBACK_TYPE_REMOTE: return "REMOTE";
-            default: return "UNKNOWN_" + type;
-        }
-    }
-
-    public static String playbackStateStateToString(int state) {
-        switch (state) {
-            case PlaybackState.STATE_NONE: return "STATE_NONE";
-            case PlaybackState.STATE_STOPPED: return "STATE_STOPPED";
-            case PlaybackState.STATE_PAUSED: return "STATE_PAUSED";
-            case PlaybackState.STATE_PLAYING: return "STATE_PLAYING";
-            default: return "UNKNOWN_" + state;
-        }
-    }
-
-    public static String volumeProviderControlToString(int control) {
-        switch (control) {
-            case VolumeProvider.VOLUME_CONTROL_ABSOLUTE: return "VOLUME_CONTROL_ABSOLUTE";
-            case VolumeProvider.VOLUME_CONTROL_FIXED: return "VOLUME_CONTROL_FIXED";
-            case VolumeProvider.VOLUME_CONTROL_RELATIVE: return "VOLUME_CONTROL_RELATIVE";
-            default: return "VOLUME_CONTROL_UNKNOWN_" + control;
-        }
-    }
-
-    public static String playbackStateToString(PlaybackState playbackState) {
-        if (playbackState == null) return null;
-        return playbackStateStateToString(playbackState.getState()) + " " + playbackState;
-    }
-
-    public static String audioManagerFlagsToString(int value) {
-        return bitFieldToString(value, AUDIO_MANAGER_FLAGS, AUDIO_MANAGER_FLAG_NAMES);
-    }
-
-    private static String bitFieldToString(int value, int[] values, String[] names) {
-        if (value == 0) return "";
-        final StringBuilder sb = new StringBuilder();
-        for (int i = 0; i < values.length; i++) {
-            if ((value & values[i]) != 0) {
-                if (sb.length() > 0) sb.append(',');
-                sb.append(names[i]);
-            }
-            value &= ~values[i];
-        }
-        if (value != 0) {
-            if (sb.length() > 0) sb.append(',');
-            sb.append("UNKNOWN_").append(value);
-        }
-        return sb.toString();
-    }
-
-    public static String getShortTime(long millis) {
-        return HMMAA.format(new Date(millis));
-    }
-
-    private static CharSequence emptyToNull(CharSequence str) {
-        return str == null || str.length() == 0 ? null : str;
-    }
-
-    public static boolean setText(TextView tv, CharSequence text) {
-        if (Objects.equals(emptyToNull(tv.getText()), emptyToNull(text))) return false;
-        tv.setText(text);
-        return true;
-    }
-
     public static final void setVisOrGone(View v, boolean vis) {
         if (v == null || (v.getVisibility() == View.VISIBLE) == vis) return;
         v.setVisibility(vis ? View.VISIBLE : View.GONE);
     }
-
-    public static final void setVisOrInvis(View v, boolean vis) {
-        if (v == null || (v.getVisibility() == View.VISIBLE) == vis) return;
-        v.setVisibility(vis ? View.VISIBLE : View.INVISIBLE);
-    }
-
-    public static boolean isVoiceCapable(Context context) {
-        final TelephonyManager telephony =
-                (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
-        return telephony != null && telephony.isVoiceCapable();
-    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogControllerImpl.java b/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogControllerImpl.java
index 32bc01c..4c16297 100644
--- a/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogControllerImpl.java
@@ -53,6 +53,7 @@
 import android.view.accessibility.AccessibilityManager;
 
 import com.android.internal.annotations.GuardedBy;
+import com.android.settingslib.volume.MediaSessions;
 import com.android.systemui.Dumpable;
 import com.android.systemui.R;
 import com.android.systemui.SysUiServiceProvider;
diff --git a/proto/src/metrics_constants/metrics_constants.proto b/proto/src/metrics_constants/metrics_constants.proto
index ab8ad0f..0a6e923 100644
--- a/proto/src/metrics_constants/metrics_constants.proto
+++ b/proto/src/metrics_constants/metrics_constants.proto
@@ -7075,6 +7075,9 @@
     // OPEN: Accessibility detail settings (android.settings.ACCESSIBILITY_DETAILS_SETTINGS intent)
     ACCESSIBILITY_DETAILS_SETTINGS = 1682;
 
+    // Open: Settings will show the conditional when Grayscale mode is on
+    SETTINGS_CONDITION_GRAYSCALE_MODE = 1683;
+
     // ---- End Q Constants, all Q constants go above this line ----
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS
diff --git a/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java b/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java
index 894a704..5da1ce6 100644
--- a/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java
+++ b/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java
@@ -78,11 +78,11 @@
     // permission in the corresponding .te file your feature belongs to.
     @VisibleForTesting
     static final String[] sDeviceConfigScopes = new String[] {
-        DeviceConfig.ActivityManagerNativeBoot.NAMESPACE,
-        DeviceConfig.MediaNative.NAMESPACE,
+        DeviceConfig.NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT,
         DeviceConfig.NAMESPACE_INPUT_NATIVE_BOOT,
+        DeviceConfig.NAMESPACE_MEDIA_NATIVE,
         DeviceConfig.NAMESPACE_NETD_NATIVE,
-        DeviceConfig.RuntimeNativeBoot.NAMESPACE,
+        DeviceConfig.NAMESPACE_RUNTIME_NATIVE_BOOT,
         DeviceConfig.RuntimeNative.NAMESPACE,
     };
 
diff --git a/services/core/java/com/android/server/audio/AudioDeviceBroker.java b/services/core/java/com/android/server/audio/AudioDeviceBroker.java
index 9af57da..451fd66 100644
--- a/services/core/java/com/android/server/audio/AudioDeviceBroker.java
+++ b/services/core/java/com/android/server/audio/AudioDeviceBroker.java
@@ -201,51 +201,72 @@
         }
     }
 
-    /*package*/ int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
+    private static final class BtDeviceConnectionInfo {
+        final @NonNull BluetoothDevice mDevice;
+        final @AudioService.BtProfileConnectionState int mState;
+        final int mProfile;
+        final boolean mSupprNoisy;
+        final int mVolume;
+
+        BtDeviceConnectionInfo(@NonNull BluetoothDevice device,
+                @AudioService.BtProfileConnectionState int state,
+                int profile, boolean suppressNoisyIntent, int vol) {
+            mDevice = device;
+            mState = state;
+            mProfile = profile;
+            mSupprNoisy = suppressNoisyIntent;
+            mVolume = vol;
+        }
+    }
+
+    /*package*/ void postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
             @NonNull BluetoothDevice device, @AudioService.BtProfileConnectionState int state,
             int profile, boolean suppressNoisyIntent, int a2dpVolume) {
-        AudioService.sDeviceLogger.log((new AudioEventLogger.StringEvent(
-                "setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent state=" + state
-                        // only querying address as this is the only readily available field
-                        // on the device
-                        + " addr=" + device.getAddress()
-                        + " prof=" + profile + " supprNoisy=" + suppressNoisyIntent
-                        + " vol=" + a2dpVolume)).printLog(TAG));
-        synchronized (mDeviceStateLock) {
-            if (mBrokerHandler.hasMessages(MSG_IL_SET_A2DP_SINK_CONNECTION_STATE,
-                    new BtHelper.BluetoothA2dpDeviceInfo(device))) {
-                AudioService.sDeviceLogger.log(new AudioEventLogger.StringEvent(
-                        "A2DP connection state ignored"));
-                return 0;
-            }
-            return mDeviceInventory.setBluetoothA2dpDeviceConnectionState(
-                    device, state, profile, suppressNoisyIntent,
-                    AudioSystem.DEVICE_NONE, a2dpVolume);
-        }
+        final BtDeviceConnectionInfo info = new BtDeviceConnectionInfo(device, state, profile,
+                suppressNoisyIntent, a2dpVolume);
+
+        // TODO add a check to try to remove unprocessed messages for the same device (the old
+        //      check didn't work), and  make sure it doesn't conflict with config change message
+        sendLMsgNoDelay(MSG_L_A2DP_DEVICE_CONNECTION_CHANGE_EXT, SENDMSG_QUEUE, info);
     }
 
     /*package*/ int handleBluetoothA2dpActiveDeviceChange(
             @NonNull BluetoothDevice device,
             @AudioService.BtProfileConnectionState int state, int profile,
             boolean suppressNoisyIntent, int a2dpVolume) {
+        // FIXME method was added by @a8439e2 but never used, and now conflicts with async behavior
+        //   of handleBluetoothA2dpDeviceConfigChange and
+        //   setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent
         synchronized (mDeviceStateLock) {
             return mDeviceInventory.handleBluetoothA2dpActiveDeviceChange(device, state, profile,
                     suppressNoisyIntent, a2dpVolume);
         }
     }
 
-    /*package*/ int setBluetoothHearingAidDeviceConnectionState(
+    private static final class HearingAidDeviceConnectionInfo {
+        final @NonNull BluetoothDevice mDevice;
+        final @AudioService.BtProfileConnectionState int mState;
+        final boolean mSupprNoisy;
+        final int mMusicDevice;
+        final @NonNull String mEventSource;
+
+        HearingAidDeviceConnectionInfo(@NonNull BluetoothDevice device,
+                @AudioService.BtProfileConnectionState int state,
+                boolean suppressNoisyIntent, int musicDevice, @NonNull String eventSource) {
+            mDevice = device;
+            mState = state;
+            mSupprNoisy = suppressNoisyIntent;
+            mMusicDevice = musicDevice;
+            mEventSource = eventSource;
+        }
+    }
+
+    /*package*/ void postBluetoothHearingAidDeviceConnectionState(
             @NonNull BluetoothDevice device, @AudioService.BtProfileConnectionState int state,
             boolean suppressNoisyIntent, int musicDevice, @NonNull String eventSource) {
-        AudioService.sDeviceLogger.log((new AudioEventLogger.StringEvent(
-                "setHearingAidDeviceConnectionState state=" + state
-                        + " addr=" + device.getAddress()
-                        + " supprNoisy=" + suppressNoisyIntent
-                        + " src=" + eventSource)).printLog(TAG));
-        synchronized (mDeviceStateLock) {
-            return mDeviceInventory.setBluetoothHearingAidDeviceConnectionState(
-                    device, state, suppressNoisyIntent, musicDevice);
-        }
+        final HearingAidDeviceConnectionInfo info = new HearingAidDeviceConnectionInfo(
+                device, state, suppressNoisyIntent, musicDevice, eventSource);
+        sendLMsgNoDelay(MSG_L_HEARING_AID_DEVICE_CONNECTION_CHANGE_EXT, SENDMSG_QUEUE, info);
     }
 
     // never called by system components
@@ -766,6 +787,35 @@
                         mBtHelper.onHeadsetProfileConnected((BluetoothHeadset) msg.obj);
                     }
                     break;
+                case MSG_L_A2DP_DEVICE_CONNECTION_CHANGE_EXT: {
+                    final BtDeviceConnectionInfo info = (BtDeviceConnectionInfo) msg.obj;
+                    AudioService.sDeviceLogger.log((new AudioEventLogger.StringEvent(
+                            "setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent "
+                                    + " state=" + info.mState
+                                    // only querying address as this is the only readily available
+                                    // field on the device
+                                    + " addr=" + info.mDevice.getAddress()
+                                    + " prof=" + info.mProfile + " supprNoisy=" + info.mSupprNoisy
+                                    + " vol=" + info.mVolume)).printLog(TAG));
+                    synchronized (mDeviceStateLock) {
+                        mDeviceInventory.setBluetoothA2dpDeviceConnectionState(
+                                info.mDevice, info.mState, info.mProfile, info.mSupprNoisy,
+                                AudioSystem.DEVICE_NONE, info.mVolume);
+                    }
+                } break;
+                case MSG_L_HEARING_AID_DEVICE_CONNECTION_CHANGE_EXT: {
+                    final HearingAidDeviceConnectionInfo info =
+                            (HearingAidDeviceConnectionInfo) msg.obj;
+                    AudioService.sDeviceLogger.log((new AudioEventLogger.StringEvent(
+                            "setHearingAidDeviceConnectionState state=" + info.mState
+                                    + " addr=" + info.mDevice.getAddress()
+                                    + " supprNoisy=" + info.mSupprNoisy
+                                    + " src=" + info.mEventSource)).printLog(TAG));
+                    synchronized (mDeviceStateLock) {
+                        mDeviceInventory.setBluetoothHearingAidDeviceConnectionState(
+                                info.mDevice, info.mState, info.mSupprNoisy, info.mMusicDevice);
+                    }
+                } break;
                 default:
                     Log.wtf(TAG, "Invalid message " + msg.what);
             }
@@ -809,6 +859,10 @@
     private static final int MSG_L_BT_SERVICE_CONNECTED_PROFILE_A2DP_SINK = 24;
     private static final int MSG_L_BT_SERVICE_CONNECTED_PROFILE_HEARING_AID = 25;
     private static final int MSG_L_BT_SERVICE_CONNECTED_PROFILE_HEADSET = 26;
+    // process external command to (dis)connect an A2DP device
+    private static final int MSG_L_A2DP_DEVICE_CONNECTION_CHANGE_EXT = 27;
+    // process external command to (dis)connect a hearing aid device
+    private static final int MSG_L_HEARING_AID_DEVICE_CONNECTION_CHANGE_EXT = 28;
 
 
     private static boolean isMessageHandledUnderWakelock(int msgId) {
@@ -821,6 +875,8 @@
             case MSG_L_A2DP_DEVICE_CONFIG_CHANGE:
             case MSG_TOGGLE_HDMI:
             case MSG_L_A2DP_ACTIVE_DEVICE_CHANGE:
+            case MSG_L_A2DP_DEVICE_CONNECTION_CHANGE_EXT:
+            case MSG_L_HEARING_AID_DEVICE_CONNECTION_CHANGE_EXT:
                 return true;
             default:
                 return false;
diff --git a/services/core/java/com/android/server/audio/AudioDeviceInventory.java b/services/core/java/com/android/server/audio/AudioDeviceInventory.java
index 37f0496..41a3c98 100644
--- a/services/core/java/com/android/server/audio/AudioDeviceInventory.java
+++ b/services/core/java/com/android/server/audio/AudioDeviceInventory.java
@@ -578,7 +578,7 @@
         return mCurAudioRoutes;
     }
 
-    /*package*/ int setBluetoothA2dpDeviceConnectionState(
+    /*package*/ void setBluetoothA2dpDeviceConnectionState(
             @NonNull BluetoothDevice device, @AudioService.BtProfileConnectionState int state,
             int profile, boolean suppressNoisyIntent, int musicDevice, int a2dpVolume) {
         int delay;
@@ -614,46 +614,50 @@
                         delay);
             }
         }
-        return delay;
     }
 
     /*package*/ int handleBluetoothA2dpActiveDeviceChange(
             @NonNull BluetoothDevice device,
             @AudioService.BtProfileConnectionState int state, int profile,
             boolean suppressNoisyIntent, int a2dpVolume) {
-        if (state == BluetoothProfile.STATE_DISCONNECTED) {
-            return setBluetoothA2dpDeviceConnectionState(device, state, profile,
-                    suppressNoisyIntent, AudioSystem.DEVICE_NONE, a2dpVolume);
-        }
-        // state == BluetoothProfile.STATE_CONNECTED
-        synchronized (mConnectedDevices) {
-            for (int i = 0; i < mConnectedDevices.size(); i++) {
-                final DeviceInfo deviceInfo = mConnectedDevices.valueAt(i);
-                if (deviceInfo.mDeviceType != AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP) {
-                    continue;
-                }
-                // If A2DP device exists, this is either an active device change or
-                // device config change
-                final String existingDevicekey = mConnectedDevices.keyAt(i);
-                final String deviceName = device.getName();
-                final String address = device.getAddress();
-                final String newDeviceKey = DeviceInfo.makeDeviceListKey(
-                        AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP, address);
-                int a2dpCodec = mDeviceBroker.getA2dpCodec(device);
-                // Device not equal to existing device, active device change
-                if (!TextUtils.equals(existingDevicekey, newDeviceKey)) {
-                    mConnectedDevices.remove(existingDevicekey);
-                    mConnectedDevices.put(newDeviceKey, new DeviceInfo(
-                            AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP, deviceName,
-                            address, a2dpCodec));
-                    mDeviceBroker.postA2dpActiveDeviceChange(
-                            new BtHelper.BluetoothA2dpDeviceInfo(
-                                    device, a2dpVolume, a2dpCodec));
-                    return 0;
-                } else {
-                    // Device config change for existing device
-                    mDeviceBroker.postBluetoothA2dpDeviceConfigChange(device);
-                    return 0;
+        // method was added by QC but never used, and now conflicts with async behavior of
+        // handleBluetoothA2dpDeviceConfigChange and
+        // setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent
+        if (false) {
+            if (state == BluetoothProfile.STATE_DISCONNECTED) {
+                setBluetoothA2dpDeviceConnectionState(device, state, profile,
+                        suppressNoisyIntent, AudioSystem.DEVICE_NONE, a2dpVolume);
+            }
+            // state == BluetoothProfile.STATE_CONNECTED
+            synchronized (mConnectedDevices) {
+                for (int i = 0; i < mConnectedDevices.size(); i++) {
+                    final DeviceInfo deviceInfo = mConnectedDevices.valueAt(i);
+                    if (deviceInfo.mDeviceType != AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP) {
+                        continue;
+                    }
+                    // If A2DP device exists, this is either an active device change or
+                    // device config change
+                    final String existingDevicekey = mConnectedDevices.keyAt(i);
+                    final String deviceName = device.getName();
+                    final String address = device.getAddress();
+                    final String newDeviceKey = DeviceInfo.makeDeviceListKey(
+                            AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP, address);
+                    int a2dpCodec = mDeviceBroker.getA2dpCodec(device);
+                    // Device not equal to existing device, active device change
+                    if (!TextUtils.equals(existingDevicekey, newDeviceKey)) {
+                        mConnectedDevices.remove(existingDevicekey);
+                        mConnectedDevices.put(newDeviceKey, new DeviceInfo(
+                                AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP, deviceName,
+                                address, a2dpCodec));
+                        mDeviceBroker.postA2dpActiveDeviceChange(
+                                new BtHelper.BluetoothA2dpDeviceInfo(
+                                        device, a2dpVolume, a2dpCodec));
+                        return 0;
+                    } else {
+                        // Device config change for existing device
+                        mDeviceBroker.postBluetoothA2dpDeviceConfigChange(device);
+                        return 0;
+                    }
                 }
             }
         }
diff --git a/services/core/java/com/android/server/audio/AudioService.java b/services/core/java/com/android/server/audio/AudioService.java
index 6bd412b..91d19de 100644
--- a/services/core/java/com/android/server/audio/AudioService.java
+++ b/services/core/java/com/android/server/audio/AudioService.java
@@ -4041,7 +4041,10 @@
     @Retention(RetentionPolicy.SOURCE)
     public @interface BtProfileConnectionState {}
 
-    public int setBluetoothHearingAidDeviceConnectionState(
+    /**
+     * See AudioManager.setBluetoothHearingAidDeviceConnectionState()
+     */
+    public void setBluetoothHearingAidDeviceConnectionState(
             @NonNull BluetoothDevice device, @BtProfileConnectionState int state,
             boolean suppressNoisyIntent, int musicDevice)
     {
@@ -4053,14 +4056,14 @@
             throw new IllegalArgumentException("Illegal BluetoothProfile state for device "
                     + " (dis)connection, got " + state);
         }
-        return mDeviceBroker.setBluetoothHearingAidDeviceConnectionState(
+        mDeviceBroker.postBluetoothHearingAidDeviceConnectionState(
                 device, state, suppressNoisyIntent, musicDevice, "AudioService");
     }
 
     /**
      * See AudioManager.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent()
      */
-    public int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
+    public void setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
             @NonNull BluetoothDevice device, @AudioService.BtProfileConnectionState int state,
             int profile, boolean suppressNoisyIntent, int a2dpVolume) {
         if (device == null) {
@@ -4071,7 +4074,7 @@
             throw new IllegalArgumentException("Illegal BluetoothProfile state for device "
                     + " (dis)connection, got " + state);
         }
-        return mDeviceBroker.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(device, state,
+        mDeviceBroker.postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(device, state,
                 profile, suppressNoisyIntent, a2dpVolume);
     }
 
@@ -4094,6 +4097,9 @@
     public int handleBluetoothA2dpActiveDeviceChange(
             BluetoothDevice device, int state, int profile, boolean suppressNoisyIntent,
             int a2dpVolume) {
+        // FIXME method was added by @a8439e2 but never used, and now conflicts with async behavior
+        //   of handleBluetoothA2dpDeviceConfigChange and
+        //   setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent
         if (device == null) {
             throw new IllegalArgumentException("Illegal null device");
         }
diff --git a/services/core/java/com/android/server/audio/BtHelper.java b/services/core/java/com/android/server/audio/BtHelper.java
index 58c1882..04073cb 100644
--- a/services/core/java/com/android/server/audio/BtHelper.java
+++ b/services/core/java/com/android/server/audio/BtHelper.java
@@ -426,7 +426,7 @@
         final BluetoothDevice btDevice = deviceList.get(0);
         final @BluetoothProfile.BtProfileState int state =
                 mHearingAid.getConnectionState(btDevice);
-        mDeviceBroker.setBluetoothHearingAidDeviceConnectionState(
+        mDeviceBroker.postBluetoothHearingAidDeviceConnectionState(
                 btDevice, state,
                 /*suppressNoisyIntent*/ false,
                 /*musicDevice*/ android.media.AudioSystem.DEVICE_NONE,
diff --git a/services/core/java/com/android/server/display/DisplayDevice.java b/services/core/java/com/android/server/display/DisplayDevice.java
index e9ae516..9882f6c 100644
--- a/services/core/java/com/android/server/display/DisplayDevice.java
+++ b/services/core/java/com/android/server/display/DisplayDevice.java
@@ -138,9 +138,19 @@
     }
 
     /**
-     * Sets the mode, if supported.
+     * Sets the display modes the system is allowed to switch between, roughly ordered by
+     * preference.
+     *
+     * Not all display devices will automatically switch between modes, so it's important that the
+     * most-desired modes are at the beginning of the allowed array.
      */
-    public void requestDisplayModesLocked(int colorMode, int modeId) {
+    public void setAllowedDisplayModesLocked(int[] modes) {
+    }
+
+    /**
+     * Sets the requested color mode.
+     */
+    public void setRequestedColorModeLocked(int colorMode) {
     }
 
     public void onOverlayChangedLocked() {
diff --git a/services/core/java/com/android/server/display/DisplayManagerService.java b/services/core/java/com/android/server/display/DisplayManagerService.java
index 6c00da2..32f34b8 100644
--- a/services/core/java/com/android/server/display/DisplayManagerService.java
+++ b/services/core/java/com/android/server/display/DisplayManagerService.java
@@ -167,13 +167,13 @@
     private static final int MSG_DELIVER_DISPLAY_EVENT = 3;
     private static final int MSG_REQUEST_TRAVERSAL = 4;
     private static final int MSG_UPDATE_VIEWPORT = 5;
-    private static final int MSG_REGISTER_BRIGHTNESS_TRACKER = 6;
-    private static final int MSG_LOAD_BRIGHTNESS_CONFIGURATION = 7;
+    private static final int MSG_LOAD_BRIGHTNESS_CONFIGURATION = 6;
 
     private final Context mContext;
     private final DisplayManagerHandler mHandler;
     private final Handler mUiHandler;
     private final DisplayAdapterListener mDisplayAdapterListener;
+    private final DisplayModeDirector mDisplayModeDirector;
     private WindowManagerInternal mWindowManagerInternal;
     private InputManagerInternal mInputManagerInternal;
     private IMediaProjectionManager mProjectionService;
@@ -310,6 +310,7 @@
         mHandler = new DisplayManagerHandler(DisplayThread.get().getLooper());
         mUiHandler = UiThread.getHandler();
         mDisplayAdapterListener = new DisplayAdapterListener();
+        mDisplayModeDirector = new DisplayModeDirector(context, mHandler);
         mSingleDisplayDemoMode = SystemProperties.getBoolean("persist.demo.singledisplay", false);
         Resources resources = mContext.getResources();
         mDefaultDisplayDefaultColorMode = mContext.getResources().getInteger(
@@ -322,7 +323,7 @@
         mMinimumBrightnessCurve = new Curve(lux, nits);
         mMinimumBrightnessSpline = Spline.createSpline(lux, nits);
 
-        PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
+        PowerManager pm = mContext.getSystemService(PowerManager.class);
         mGlobalDisplayBrightness = pm.getDefaultScreenBrightnessSetting();
         mCurrentUserId = UserHandle.USER_SYSTEM;
         ColorSpace[] colorSpaces = SurfaceControl.getCompositionColorSpaces();
@@ -347,9 +348,9 @@
         // adapter is up so that we have it's configuration. We could load it lazily, but since
         // we're going to have to read it in eventually we may as well do it here rather than after
         // we've waited for the display to register itself with us.
-		synchronized(mSyncRoot) {
-			mPersistentDataStore.loadIfNeeded();
-			loadStableDisplayValuesLocked();
+        synchronized (mSyncRoot) {
+            mPersistentDataStore.loadIfNeeded();
+            loadStableDisplayValuesLocked();
         }
         mHandler.sendEmptyMessage(MSG_REGISTER_DEFAULT_DISPLAY_ADAPTERS);
 
@@ -417,8 +418,10 @@
             mOnlyCore = onlyCore;
         }
 
+        mDisplayModeDirector.setListener(new AllowedDisplayModeObserver());
+        mDisplayModeDirector.start();
+
         mHandler.sendEmptyMessage(MSG_REGISTER_ADDITIONAL_DISPLAY_ADAPTERS);
-        mHandler.sendEmptyMessage(MSG_REGISTER_BRIGHTNESS_TRACKER);
     }
 
     @VisibleForTesting
@@ -1194,13 +1197,8 @@
                 requestedModeId = display.getDisplayInfoLocked().findDefaultModeByRefreshRate(
                         requestedRefreshRate);
             }
-            if (display.getRequestedModeIdLocked() != requestedModeId) {
-                if (DEBUG) {
-                    Slog.d(TAG, "Display " + displayId + " switching to mode " + requestedModeId);
-                }
-                display.setRequestedModeIdLocked(requestedModeId);
-                scheduleTraversalLocked(inTraversal);
-            }
+            mDisplayModeDirector.getAppRequestObserver().setAppRequestedMode(
+                    displayId, requestedModeId);
         }
     }
 
@@ -1319,6 +1317,28 @@
         return SurfaceControl.getDisplayedContentSample(token, maxFrames, timestamp);
     }
 
+    private void onAllowedDisplayModesChangedInternal() {
+        boolean changed = false;
+        synchronized (mSyncRoot) {
+            final int count = mLogicalDisplays.size();
+            for (int i = 0; i < count; i++) {
+                LogicalDisplay display = mLogicalDisplays.valueAt(i);
+                int displayId = mLogicalDisplays.keyAt(i);
+                int[] allowedModes = mDisplayModeDirector.getAllowedModes(displayId);
+                // Note that order is important here since not all display devices are capable of
+                // automatically switching, so we do actually want to check for equality and not
+                // just equivalent contents (regardless of order).
+                if (!Arrays.equals(allowedModes, display.getAllowedDisplayModesLocked())) {
+                    display.setAllowedDisplayModesLocked(allowedModes);
+                    changed = true;
+                }
+            }
+            if (changed) {
+                scheduleTraversalLocked(false);
+            }
+        }
+    }
+
     private void clearViewportsLocked() {
         mViewports.clear();
     }
@@ -1518,6 +1538,9 @@
                 display.dumpLocked(ipw);
             }
 
+            pw.println();
+            mDisplayModeDirector.dump(pw);
+
             final int callbackCount = mCallbacks.size();
             pw.println();
             pw.println("Callbacks: size=" + callbackCount);
@@ -2431,4 +2454,10 @@
         }
 
     }
+
+    class AllowedDisplayModeObserver implements DisplayModeDirector.Listener {
+        public void onAllowedDisplayModesChanged() {
+            onAllowedDisplayModesChangedInternal();
+        }
+    }
 }
diff --git a/services/core/java/com/android/server/display/DisplayModeDirector.java b/services/core/java/com/android/server/display/DisplayModeDirector.java
new file mode 100644
index 0000000..af4db07
--- /dev/null
+++ b/services/core/java/com/android/server/display/DisplayModeDirector.java
@@ -0,0 +1,685 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.display;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.hardware.display.DisplayManager;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.util.Slog;
+import android.util.SparseArray;
+import android.view.Display;
+import android.view.DisplayInfo;
+
+import com.android.internal.R;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Objects;
+
+/**
+ * The DisplayModeDirector is responsible for determining what modes are allowed to be
+ * automatically picked by the system based on system-wide and display-specific configuration.
+ */
+public class DisplayModeDirector {
+    private static final String TAG = "DisplayModeDirector";
+    private static final boolean DEBUG = false;
+
+    private static final int MSG_ALLOWED_MODES_CHANGED = 1;
+
+    // Special ID used to indicate that given vote is to be applied globally, rather than to a
+    // specific display.
+    private static final int GLOBAL_ID = -1;
+
+    // What we consider to be the system's "default" refresh rate.
+    private static final float DEFAULT_REFRESH_RATE = 60f;
+
+    // The tolerance within which we consider something approximately equals.
+    private static final float EPSILON = 0.001f;
+
+    private final Object mLock = new Object();
+    private final Context mContext;
+
+    private final DisplayModeDirectorHandler mHandler;
+
+    // A map from the display ID to the collection of votes and their priority. The latter takes
+    // the form of another map from the priority to the vote itself so that each priority is
+    // guaranteed to have exactly one vote, which is also easily and efficiently replaceable.
+    private final SparseArray<SparseArray<Vote>> mVotesByDisplay;
+    // A map from the display ID to the supported modes on that display.
+    private final SparseArray<Display.Mode[]> mSupportedModesByDisplay;
+    // A map from the display ID to the default mode of that display.
+    private final SparseArray<Display.Mode> mDefaultModeByDisplay;
+
+    private final AppRequestObserver mAppRequestObserver;
+    private final SettingsObserver mSettingsObserver;
+    private final DisplayObserver mDisplayObserver;
+
+
+    private Listener mListener;
+
+    public DisplayModeDirector(@NonNull Context context, @NonNull Handler handler) {
+        mContext = context;
+        mHandler = new DisplayModeDirectorHandler(handler.getLooper());
+        mVotesByDisplay = new SparseArray<>();
+        mSupportedModesByDisplay = new SparseArray<>();
+        mDefaultModeByDisplay =  new SparseArray<>();
+        mAppRequestObserver = new AppRequestObserver();
+        mSettingsObserver = new SettingsObserver(context, handler);
+        mDisplayObserver = new DisplayObserver(context, handler);
+    }
+
+    /**
+     * Tells the DisplayModeDirector to update allowed votes and begin observing relevant system
+     * state.
+     *
+     * This has to be deferred because the object may be constructed before the rest of the system
+     * is ready.
+     */
+    public void start() {
+        mSettingsObserver.observe();
+        mDisplayObserver.observe();
+        mSettingsObserver.observe();
+        synchronized (mLock) {
+            // We may have a listener already registered before the call to start, so go ahead and
+            // notify them to pick up our newly initialized state.
+            notifyAllowedModesChangedLocked();
+        }
+    }
+
+    /**
+     * Calculates the modes the system is allowed to freely switch between based on global and
+     * display-specific constraints.
+     *
+     * @param displayId The display to query for.
+     * @return The IDs of the modes the system is allowed to freely switch between.
+     */
+    @NonNull
+    public int[] getAllowedModes(int displayId) {
+        synchronized (mLock) {
+            SparseArray<Vote> votes = getVotesLocked(displayId);
+            Display.Mode[] modes = mSupportedModesByDisplay.get(displayId);
+            Display.Mode defaultMode = mDefaultModeByDisplay.get(displayId);
+            if (modes == null || defaultMode == null) {
+                Slog.e(TAG, "Asked about unknown display, returning empty allowed set! (id="
+                        + displayId + ")");
+                return new int[0];
+            }
+            return getAllowedModesLocked(votes, modes, defaultMode);
+        }
+    }
+
+    @NonNull
+    private SparseArray<Vote> getVotesLocked(int displayId) {
+        SparseArray<Vote> displayVotes = mVotesByDisplay.get(displayId);
+        final SparseArray<Vote> votes;
+        if (displayVotes != null) {
+            votes = displayVotes.clone();
+        } else {
+            votes = new SparseArray<>();
+        }
+
+        SparseArray<Vote> globalVotes = mVotesByDisplay.get(GLOBAL_ID);
+        if (globalVotes != null) {
+            for (int i = 0; i < globalVotes.size(); i++) {
+                int priority = globalVotes.keyAt(i);
+                if (votes.indexOfKey(priority) < 0) {
+                    votes.put(priority, globalVotes.valueAt(i));
+                }
+            }
+        }
+        return votes;
+    }
+
+    @NonNull
+    private int[] getAllowedModesLocked(@NonNull SparseArray<Vote> votes,
+            @NonNull Display.Mode[] modes, @NonNull Display.Mode defaultMode) {
+        int lowestConsideredPriority = Vote.MIN_PRIORITY;
+        while (lowestConsideredPriority <= Vote.MAX_PRIORITY) {
+            float minRefreshRate = 0f;
+            float maxRefreshRate = Float.POSITIVE_INFINITY;
+            int height = Vote.INVALID_SIZE;
+            int width = Vote.INVALID_SIZE;
+
+            for (int priority = Vote.MAX_PRIORITY;
+                    priority >= lowestConsideredPriority;
+                    priority--) {
+                Vote vote = votes.get(priority);
+                if (vote == null) {
+                    continue;
+                }
+                // For refresh rates, just use the tightest bounds of all the votes
+                minRefreshRate = Math.max(minRefreshRate, vote.minRefreshRate);
+                maxRefreshRate = Math.min(maxRefreshRate, vote.maxRefreshRate);
+                // For display size, use only the first vote we come across (i.e. the highest
+                // priority vote that includes the width / height).
+                if (height == Vote.INVALID_SIZE && width == Vote.INVALID_SIZE
+                        && vote.height > 0 && vote.width > 0) {
+                    width = vote.width;
+                    height = vote.height;
+                }
+            }
+
+            // If we don't have anything specifying the width / height of the display, just use the
+            // default width and height. We don't want these switching out from underneath us since
+            // it's a pretty disruptive behavior.
+            if (height == Vote.INVALID_SIZE || width == Vote.INVALID_SIZE) {
+                width = defaultMode.getPhysicalWidth();
+                height = defaultMode.getPhysicalHeight();
+            }
+
+            int[] availableModes =
+                    filterModes(modes, width, height, minRefreshRate, maxRefreshRate);
+            if (availableModes.length > 0) {
+                if (DEBUG) {
+                    Slog.w(TAG, "Found available modes=" + Arrays.toString(availableModes)
+                            + " with lowest priority considered "
+                            + Vote.priorityToString(lowestConsideredPriority)
+                            + " and constraints: "
+                            + "width=" + width
+                            + ", height=" + height
+                            + ", minRefreshRate=" + minRefreshRate
+                            + ", maxRefreshRate=" + maxRefreshRate);
+                }
+                return availableModes;
+            }
+
+            if (DEBUG) {
+                Slog.w(TAG, "Couldn't find available modes with lowest priority set to "
+                        + Vote.priorityToString(lowestConsideredPriority)
+                        + " and with the following constraints: "
+                        + "width=" + width
+                        + ", height=" + height
+                        + ", minRefreshRate=" + minRefreshRate
+                        + ", maxRefreshRate=" + maxRefreshRate);
+            }
+            // If we haven't found anything with the current set of votes, drop the current lowest
+            // priority vote.
+            lowestConsideredPriority++;
+        }
+
+        // If we still haven't found anything that matches our current set of votes, just fall back
+        // to the default mode.
+        return new int[] { defaultMode.getModeId() };
+    }
+
+    private int[] filterModes(Display.Mode[] supportedModes,
+            int width, int height, float minRefreshRate, float maxRefreshRate) {
+        ArrayList<Display.Mode> availableModes = new ArrayList<>();
+        for (Display.Mode mode : supportedModes) {
+            if (mode.getPhysicalWidth() != width || mode.getPhysicalHeight() != height) {
+                if (DEBUG) {
+                    Slog.w(TAG, "Discarding mode " + mode.getModeId() + ", wrong size"
+                            + ": desiredWidth=" + width
+                            + ": desiredHeight=" + height
+                            + ": actualWidth=" + mode.getPhysicalWidth()
+                            + ": actualHeight=" + mode.getPhysicalHeight());
+                }
+                continue;
+            }
+            final float refreshRate = mode.getRefreshRate();
+            // Some refresh rates are calculated based on frame timings, so they aren't *exactly*
+            // equal to expected refresh rate. Given that, we apply a bit of tolerance to this
+            // comparison.
+            if (refreshRate < (minRefreshRate - EPSILON)
+                    || refreshRate > (maxRefreshRate + EPSILON)) {
+                if (DEBUG) {
+                    Slog.w(TAG, "Discarding mode " + mode.getModeId()
+                            + ", outside refresh rate bounds"
+                            + ": minRefreshRate=" + minRefreshRate
+                            + ", maxRefreshRate=" + maxRefreshRate
+                            + ", modeRefreshRate=" + refreshRate);
+                }
+                continue;
+            }
+            availableModes.add(mode);
+        }
+        final int size = availableModes.size();
+        int[] availableModeIds = new int[size];
+        for (int i = 0; i < size; i++) {
+            availableModeIds[i] = availableModes.get(i).getModeId();
+        }
+        return availableModeIds;
+    }
+
+    /**
+     * Gets the observer responsible for application display mode requests.
+     */
+    @NonNull
+    public AppRequestObserver getAppRequestObserver() {
+        // We don't need to lock here because mAppRequestObserver is a final field, which is
+        // guaranteed to be visible on all threads after construction.
+        return mAppRequestObserver;
+    }
+
+    /**
+     * Sets the listener for changes to allowed display modes.
+     */
+    public void setListener(@Nullable Listener listener) {
+        synchronized (mLock) {
+            mListener = listener;
+        }
+    }
+
+    /**
+     * Print the object's state and debug information into the given stream.
+     *
+     * @param pw The stream to dump information to.
+     */
+    public void dump(PrintWriter pw) {
+        pw.println("DisplayModeDirector");
+        synchronized (mLock) {
+            pw.println("  mSupportedModesByDisplay:");
+            for (int i = 0; i < mSupportedModesByDisplay.size(); i++) {
+                final int id = mSupportedModesByDisplay.keyAt(i);
+                final Display.Mode[] modes = mSupportedModesByDisplay.valueAt(i);
+                pw.println("    " + id + " -> " + Arrays.toString(modes));
+            }
+            pw.println("  mDefaultModeByDisplay:");
+            for (int i = 0; i < mDefaultModeByDisplay.size(); i++) {
+                final int id = mDefaultModeByDisplay.keyAt(i);
+                final Display.Mode mode = mDefaultModeByDisplay.valueAt(i);
+                pw.println("    " + id + " -> " + mode);
+            }
+            pw.println("  mVotesByDisplay:");
+            for (int i = 0; i < mVotesByDisplay.size(); i++) {
+                pw.println("    " + mVotesByDisplay.keyAt(i) + ":");
+                SparseArray<Vote> votes = mVotesByDisplay.valueAt(i);
+                for (int p = Vote.MAX_PRIORITY; p >= Vote.MIN_PRIORITY; p--) {
+                    Vote vote = votes.get(p);
+                    if (vote == null) {
+                        continue;
+                    }
+                    pw.println("      " + Vote.priorityToString(p) + " -> " + vote);
+                }
+            }
+            mSettingsObserver.dumpLocked(pw);
+            mAppRequestObserver.dumpLocked(pw);
+        }
+    }
+
+    private void updateVoteLocked(int priority, Vote vote) {
+        updateVoteLocked(GLOBAL_ID, priority, vote);
+    }
+
+    private void updateVoteLocked(int displayId, int priority, Vote vote) {
+        if (DEBUG) {
+            Slog.i(TAG, "updateVoteLocked(displayId=" + displayId
+                    + ", priority=" + Vote.priorityToString(priority)
+                    + ", vote=" + vote + ")");
+        }
+        if (priority < Vote.MIN_PRIORITY || priority > Vote.MAX_PRIORITY) {
+            Slog.w(TAG, "Received a vote with an invalid priority, ignoring:"
+                    + " priority=" + Vote.priorityToString(priority)
+                    + ", vote=" + vote, new Throwable());
+            return;
+        }
+        final SparseArray<Vote> votes = getOrCreateVotesByDisplay(displayId);
+
+        Vote currentVote = votes.get(priority);
+        if (vote != null) {
+            votes.put(priority, vote);
+        } else {
+            votes.remove(priority);
+        }
+
+        if (votes.size() == 0) {
+            if (DEBUG) {
+                Slog.i(TAG, "No votes left for display " + displayId + ", removing.");
+            }
+            mVotesByDisplay.remove(displayId);
+        }
+
+        notifyAllowedModesChangedLocked();
+    }
+
+    private void notifyAllowedModesChangedLocked() {
+        if (mListener != null && !mHandler.hasMessages(MSG_ALLOWED_MODES_CHANGED)) {
+            // We need to post this to a handler to avoid calling out while holding the lock
+            // since we know there are things that both listen for changes as well as provide
+            // information. If we did call out while holding the lock, then there's no guaranteed
+            // lock order and we run the real of risk deadlock.
+            Message msg = mHandler.obtainMessage(MSG_ALLOWED_MODES_CHANGED, mListener);
+            msg.sendToTarget();
+        }
+    }
+
+    private SparseArray<Vote> getOrCreateVotesByDisplay(int displayId) {
+        int index = mVotesByDisplay.indexOfKey(displayId);
+        if (mVotesByDisplay.indexOfKey(displayId) >= 0) {
+            return mVotesByDisplay.get(displayId);
+        } else {
+            SparseArray<Vote> votes = new SparseArray<>();
+            mVotesByDisplay.put(displayId, votes);
+            return votes;
+        }
+    }
+
+    /**
+     * Listens for changes to display mode coordination.
+     */
+    public interface Listener {
+        /**
+         * Called when the allowed display modes may have changed.
+         */
+        void onAllowedDisplayModesChanged();
+    }
+
+    private static final class DisplayModeDirectorHandler extends Handler {
+        DisplayModeDirectorHandler(Looper looper) {
+            super(looper, null, true /*async*/);
+        }
+
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MSG_ALLOWED_MODES_CHANGED:
+                    Listener listener = (Listener) msg.obj;
+                    listener.onAllowedDisplayModesChanged();
+                    break;
+            }
+        }
+    }
+
+    private static final class Vote {
+        public static final int PRIORITY_USER_SETTING = 0;
+        // We split the app request into two priorities in case we can satisfy one desire without
+        // the other.
+        public static final int PRIORITY_APP_REQUEST_REFRESH_RATE = 1;
+        public static final int PRIORITY_APP_REQUEST_SIZE = 2;
+        public static final int PRIORITY_LOW_POWER_MODE = 3;
+
+        // Whenever a new priority is added, remember to update MIN_PRIORITY and/or MAX_PRIORITY as
+        // appropriate, as well as priorityToString.
+
+        public static final int MIN_PRIORITY = PRIORITY_USER_SETTING;
+        public static final int MAX_PRIORITY = PRIORITY_LOW_POWER_MODE;
+
+        /**
+         * A value signifying an invalid width or height in a vote.
+         */
+        public static final int INVALID_SIZE = -1;
+
+        /**
+         * The requested width of the display in pixels, or INVALID_SIZE;
+         */
+        public final int width;
+        /**
+         * The requested height of the display in pixels, or INVALID_SIZE;
+         */
+        public final int height;
+
+        /**
+         * The lowest desired refresh rate.
+         */
+        public final float minRefreshRate;
+        /**
+         * The highest desired refresh rate.
+         */
+        public final float maxRefreshRate;
+
+        public static Vote forRefreshRates(float minRefreshRate, float maxRefreshRate) {
+            return new Vote(INVALID_SIZE, INVALID_SIZE, minRefreshRate, maxRefreshRate);
+        }
+
+        public static Vote forSize(int width, int height) {
+            return new Vote(width, height, 0f, Float.POSITIVE_INFINITY);
+        }
+
+        private Vote(int width, int height,
+                float minRefreshRate, float maxRefreshRate) {
+            this.width = width;
+            this.height = height;
+            this.minRefreshRate = minRefreshRate;
+            this.maxRefreshRate = maxRefreshRate;
+        }
+
+        public static String priorityToString(int priority) {
+            switch (priority) {
+                case PRIORITY_USER_SETTING:
+                    return "PRIORITY_USER_SETTING";
+                case PRIORITY_APP_REQUEST_REFRESH_RATE:
+                    return "PRIORITY_APP_REQUEST_REFRESH_RATE";
+                case PRIORITY_APP_REQUEST_SIZE:
+                    return "PRIORITY_APP_REQUEST_SIZE";
+                case PRIORITY_LOW_POWER_MODE:
+                    return "PRIORITY_LOW_POWER_MODE";
+                default:
+                    return Integer.toString(priority);
+            }
+        }
+
+        @Override
+        public String toString() {
+            return "Vote{"
+                + "width=" + width
+                + ", height=" + height
+                + ", minRefreshRate=" + minRefreshRate
+                + ", maxRefreshRate=" + maxRefreshRate
+                + "}";
+        }
+    }
+
+    private final class SettingsObserver extends ContentObserver {
+        private final Uri mRefreshRateSetting =
+                Settings.System.getUriFor(Settings.System.PEAK_REFRESH_RATE);
+        private final Uri mLowPowerModeSetting =
+                Settings.Global.getUriFor(Settings.Global.LOW_POWER_MODE);
+
+        private final Context mContext;
+        private final float mDefaultPeakRefreshRate;
+
+        SettingsObserver(@NonNull Context context, @NonNull Handler handler) {
+            super(handler);
+            mContext = context;
+            mDefaultPeakRefreshRate = (float) context.getResources().getInteger(
+                    R.integer.config_defaultPeakRefreshRate);
+        }
+
+        public void observe() {
+            final ContentResolver cr = mContext.getContentResolver();
+            cr.registerContentObserver(mRefreshRateSetting, false /*notifyDescendants*/, this,
+                    UserHandle.USER_SYSTEM);
+            cr.registerContentObserver(mLowPowerModeSetting, false /*notifyDescendants*/, this,
+                    UserHandle.USER_SYSTEM);
+            synchronized (mLock) {
+                updateRefreshRateSettingLocked();
+                updateLowPowerModeSettingLocked();
+            }
+        }
+
+        @Override
+        public void onChange(boolean selfChange, Uri uri, int userId) {
+            synchronized (mLock) {
+                if (mRefreshRateSetting.equals(uri)) {
+                    updateRefreshRateSettingLocked();
+                } else if (mLowPowerModeSetting.equals(uri)) {
+                    updateLowPowerModeSettingLocked();
+                }
+            }
+        }
+
+        private void updateLowPowerModeSettingLocked() {
+            boolean inLowPowerMode = Settings.Global.getInt(mContext.getContentResolver(),
+                    Settings.Global.LOW_POWER_MODE, 0 /*default*/) != 0;
+            final Vote vote;
+            if (inLowPowerMode) {
+                vote = Vote.forRefreshRates(0f, 60f);
+            } else {
+                vote = null;
+            }
+            updateVoteLocked(Vote.PRIORITY_LOW_POWER_MODE, vote);
+        }
+
+        private void updateRefreshRateSettingLocked() {
+            float peakRefreshRate = Settings.System.getFloat(mContext.getContentResolver(),
+                    Settings.System.PEAK_REFRESH_RATE, DEFAULT_REFRESH_RATE);
+            Vote vote = Vote.forRefreshRates(0f, peakRefreshRate);
+            updateVoteLocked(Vote.PRIORITY_USER_SETTING, vote);
+        }
+
+        public void dumpLocked(PrintWriter pw) {
+            pw.println("  SettingsObserver");
+            pw.println("    mDefaultPeakRefreshRate: " + mDefaultPeakRefreshRate);
+        }
+    }
+
+    final class AppRequestObserver {
+        private SparseArray<Display.Mode> mAppRequestedModeByDisplay;
+
+        AppRequestObserver() {
+            mAppRequestedModeByDisplay = new SparseArray<>();
+        }
+
+        public void setAppRequestedMode(int displayId, int modeId) {
+            synchronized (mLock) {
+                setAppRequestedModeLocked(displayId, modeId);
+            }
+        }
+
+        private void setAppRequestedModeLocked(int displayId, int modeId) {
+            final Display.Mode requestedMode = findModeByIdLocked(displayId, modeId);
+            if (Objects.equals(requestedMode, mAppRequestedModeByDisplay.get(displayId))) {
+                return;
+            }
+
+            final Vote refreshRateVote;
+            final Vote sizeVote;
+            if (requestedMode != null) {
+                mAppRequestedModeByDisplay.put(displayId, requestedMode);
+                float refreshRate = requestedMode.getRefreshRate();
+                refreshRateVote = Vote.forRefreshRates(refreshRate, refreshRate);
+                sizeVote = Vote.forSize(requestedMode.getPhysicalWidth(),
+                        requestedMode.getPhysicalHeight());
+            } else {
+                mAppRequestedModeByDisplay.remove(displayId);
+                refreshRateVote = null;
+                sizeVote = null;
+            }
+            updateVoteLocked(displayId, Vote.PRIORITY_APP_REQUEST_REFRESH_RATE, refreshRateVote);
+            updateVoteLocked(displayId, Vote.PRIORITY_APP_REQUEST_SIZE, sizeVote);
+            return;
+        }
+
+        private Display.Mode findModeByIdLocked(int displayId, int modeId) {
+            Display.Mode[] modes = mSupportedModesByDisplay.get(displayId);
+            if (modes == null) {
+                return null;
+            }
+            for (Display.Mode mode : modes) {
+                if (mode.getModeId() == modeId) {
+                    return mode;
+                }
+            }
+            return null;
+        }
+
+        public void dumpLocked(PrintWriter pw) {
+            pw.println("  AppRequestObserver");
+            pw.println("    mAppRequestedModeByDisplay:");
+            for (int i = 0; i < mAppRequestedModeByDisplay.size(); i++) {
+                final int id = mAppRequestedModeByDisplay.keyAt(i);
+                final Display.Mode mode = mAppRequestedModeByDisplay.valueAt(i);
+                pw.println("    " + id + " -> " + mode);
+            }
+        }
+    }
+
+    private final class DisplayObserver implements DisplayManager.DisplayListener {
+        // Note that we can never call into DisplayManager or any of the non-POD classes it
+        // returns, while holding mLock since it may call into DMS, which might be simultaneously
+        // calling into us already holding its own lock.
+        private final Context mContext;
+        private final Handler mHandler;
+
+        DisplayObserver(Context context, Handler handler) {
+            mContext = context;
+            mHandler = handler;
+        }
+
+        public void observe() {
+            DisplayManager dm = mContext.getSystemService(DisplayManager.class);
+            dm.registerDisplayListener(this, mHandler);
+
+            // Populate existing displays
+            SparseArray<Display.Mode[]> modes = new SparseArray<>();
+            SparseArray<Display.Mode> defaultModes = new SparseArray<>();
+            DisplayInfo info = new DisplayInfo();
+            Display[] displays = dm.getDisplays();
+            for (Display d : displays) {
+                final int displayId = d.getDisplayId();
+                d.getDisplayInfo(info);
+                modes.put(displayId, info.supportedModes);
+                defaultModes.put(displayId, info.getDefaultMode());
+            }
+            synchronized (mLock) {
+                final int size = modes.size();
+                for (int i = 0; i < size; i++) {
+                    mSupportedModesByDisplay.put(modes.keyAt(i), modes.valueAt(i));
+                    mDefaultModeByDisplay.put(defaultModes.keyAt(i), defaultModes.valueAt(i));
+                }
+            }
+        }
+
+        @Override
+        public void onDisplayAdded(int displayId) {
+            updateDisplayModes(displayId);
+        }
+
+        @Override
+        public void onDisplayRemoved(int displayId) {
+            synchronized (mLock) {
+                mSupportedModesByDisplay.remove(displayId);
+                mDefaultModeByDisplay.remove(displayId);
+            }
+        }
+
+        @Override
+        public void onDisplayChanged(int displayId) {
+            updateDisplayModes(displayId);
+        }
+
+        private void updateDisplayModes(int displayId) {
+            Display d = mContext.getSystemService(DisplayManager.class).getDisplay(displayId);
+            DisplayInfo info = new DisplayInfo();
+            d.getDisplayInfo(info);
+            boolean changed = false;
+            synchronized (mLock) {
+                if (!Arrays.equals(mSupportedModesByDisplay.get(displayId), info.supportedModes)) {
+                    mSupportedModesByDisplay.put(displayId, info.supportedModes);
+                    changed = true;
+                }
+                if (!Objects.equals(mDefaultModeByDisplay.get(displayId), info.getDefaultMode())) {
+                    changed = true;
+                    mDefaultModeByDisplay.put(displayId, info.getDefaultMode());
+                }
+                if (changed) {
+                    notifyAllowedModesChangedLocked();
+                }
+            }
+        }
+    }
+}
diff --git a/services/core/java/com/android/server/display/LocalDisplayAdapter.java b/services/core/java/com/android/server/display/LocalDisplayAdapter.java
index 77df10b..5e5ef26 100644
--- a/services/core/java/com/android/server/display/LocalDisplayAdapter.java
+++ b/services/core/java/com/android/server/display/LocalDisplayAdapter.java
@@ -112,16 +112,18 @@
                 activeColorMode = Display.COLOR_MODE_INVALID;
             }
             int[] colorModes = SurfaceControl.getDisplayColorModes(displayToken);
+            int[] allowedConfigs = SurfaceControl.getAllowedDisplayConfigs(displayToken);
             LocalDisplayDevice device = mDevices.get(physicalDisplayId);
             if (device == null) {
                 // Display was added.
                 final boolean isInternal = mDevices.size() == 0;
                 device = new LocalDisplayDevice(displayToken, physicalDisplayId,
-                        configs, activeConfig, colorModes, activeColorMode, isInternal);
+                        configs, activeConfig, allowedConfigs, colorModes, activeColorMode,
+                        isInternal);
                 mDevices.put(physicalDisplayId, device);
                 sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_ADDED);
             } else if (device.updatePhysicalDisplayInfoLocked(configs, activeConfig,
-                        colorModes, activeColorMode)) {
+                        allowedConfigs, colorModes, activeColorMode)) {
                 // Display properties changed.
                 sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_CHANGED);
             }
@@ -167,26 +169,30 @@
         private boolean mHavePendingChanges;
         private int mState = Display.STATE_UNKNOWN;
         private int mBrightness = PowerManager.BRIGHTNESS_DEFAULT;
-        private int mActivePhysIndex;
         private int mDefaultModeId;
         private int mActiveModeId;
         private boolean mActiveModeInvalid;
+        private int[] mAllowedModeIds;
+        private boolean mAllowedModeIdsInvalid;
+        private int mActivePhysIndex;
+        private int[] mAllowedPhysIndexes;
         private int mActiveColorMode;
         private boolean mActiveColorModeInvalid;
         private Display.HdrCapabilities mHdrCapabilities;
         private boolean mSidekickActive;
         private SidekickInternal mSidekickInternal;
 
-        private  SurfaceControl.PhysicalDisplayInfo mDisplayInfos[];
+        private SurfaceControl.PhysicalDisplayInfo[] mDisplayInfos;
 
         LocalDisplayDevice(IBinder displayToken, long physicalDisplayId,
                 SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos, int activeDisplayInfo,
-                int[] colorModes, int activeColorMode, boolean isInternal) {
+                int[] allowedDisplayInfos, int[] colorModes, int activeColorMode,
+                boolean isInternal) {
             super(LocalDisplayAdapter.this, displayToken, UNIQUE_ID_PREFIX + physicalDisplayId);
             mPhysicalDisplayId = physicalDisplayId;
             mIsInternal = isInternal;
             updatePhysicalDisplayInfoLocked(physicalDisplayInfos, activeDisplayInfo,
-                    colorModes, activeColorMode);
+                    allowedDisplayInfos, colorModes, activeColorMode);
             updateColorModesLocked(colorModes, activeColorMode);
             mSidekickInternal = LocalServices.getService(SidekickInternal.class);
             if (mIsInternal) {
@@ -205,9 +211,10 @@
 
         public boolean updatePhysicalDisplayInfoLocked(
                 SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos, int activeDisplayInfo,
-                int[] colorModes, int activeColorMode) {
+                int[] allowedDisplayInfos, int[] colorModes, int activeColorMode) {
             mDisplayInfos = Arrays.copyOf(physicalDisplayInfos, physicalDisplayInfos.length);
             mActivePhysIndex = activeDisplayInfo;
+            mAllowedPhysIndexes = Arrays.copyOf(allowedDisplayInfos, allowedDisplayInfos.length);
             // Build an updated list of all existing modes.
             ArrayList<DisplayModeRecord> records = new ArrayList<DisplayModeRecord>();
             boolean modesAdded = false;
@@ -246,8 +253,9 @@
                     break;
                 }
             }
-            // Check whether surface flinger spontaneously changed modes out from under us. Schedule
-            // traversals to ensure that the correct state is reapplied if necessary.
+
+            // Check whether surface flinger spontaneously changed modes out from under us.
+            // Schedule traversals to ensure that the correct state is reapplied if necessary.
             if (mActiveModeId != 0
                     && mActiveModeId != activeRecord.mMode.getModeId()) {
                 mActiveModeInvalid = true;
@@ -266,6 +274,7 @@
             for (DisplayModeRecord record : records) {
                 mSupportedModes.put(record.mMode.getModeId(), record);
             }
+
             // Update the default mode, if needed.
             if (findDisplayInfoIndexLocked(mDefaultModeId) < 0) {
                 if (mDefaultModeId != 0) {
@@ -274,6 +283,7 @@
                 }
                 mDefaultModeId = activeRecord.mMode.getModeId();
             }
+
             // Determine whether the active mode is still there.
             if (mSupportedModes.indexOfKey(mActiveModeId) < 0) {
                 if (mActiveModeId != 0) {
@@ -284,6 +294,21 @@
                 mActiveModeInvalid = true;
             }
 
+            // Determine what the currently allowed modes are
+            mAllowedModeIds = new int[] { mActiveModeId };
+            int[] allowedModeIds = new int[mAllowedPhysIndexes.length];
+            int size = 0;
+            for (int physIndex : mAllowedPhysIndexes) {
+                int modeId = findMatchingModeIdLocked(physIndex);
+                if (modeId > 0) {
+                    allowedModeIds[size++] = modeId;
+                }
+            }
+
+            // If this is different from our desired allowed modes, then mark our current set as
+            // invalid so we correct this on the next traversal.
+            mAllowedModeIdsInvalid = !Arrays.equals(allowedModeIds, mAllowedModeIds);
+
             // Schedule traversals so that we apply pending changes.
             sendTraversalRequestLocked();
             return true;
@@ -368,11 +393,7 @@
                 mInfo.height = phys.height;
                 mInfo.modeId = mActiveModeId;
                 mInfo.defaultModeId = mDefaultModeId;
-                mInfo.supportedModes = new Display.Mode[mSupportedModes.size()];
-                for (int i = 0; i < mSupportedModes.size(); i++) {
-                    DisplayModeRecord record = mSupportedModes.valueAt(i);
-                    mInfo.supportedModes[i] = record.mMode;
-                }
+                mInfo.supportedModes = getDisplayModes(mSupportedModes);
                 mInfo.colorMode = mActiveColorMode;
                 mInfo.supportedColorModes =
                         new int[mSupportedColorModes.size()];
@@ -593,44 +614,104 @@
         }
 
         @Override
-        public void requestDisplayModesLocked(int colorMode, int modeId) {
-            if (requestModeLocked(modeId) ||
-                    requestColorModeLocked(colorMode)) {
+        public void setRequestedColorModeLocked(int colorMode) {
+            if (requestColorModeLocked(colorMode)) {
                 updateDeviceInfoLocked();
             }
         }
 
         @Override
+        public void setAllowedDisplayModesLocked(int[] modes) {
+            updateAllowedModesLocked(modes);
+        }
+
+        @Override
         public void onOverlayChangedLocked() {
             updateDeviceInfoLocked();
         }
 
-        public boolean requestModeLocked(int modeId) {
-            if (modeId == 0) {
-                modeId = mDefaultModeId;
-            } else if (mSupportedModes.indexOfKey(modeId) < 0) {
-                Slog.w(TAG, "Requested mode " + modeId + " is not supported by this display,"
-                        + " reverting to default display mode.");
-                modeId = mDefaultModeId;
+        public void onActivePhysicalDisplayModeChangedLocked(int physIndex) {
+            if (updateActiveModeLocked(physIndex)) {
+                updateDeviceInfoLocked();
             }
+        }
 
-            int physIndex = findDisplayInfoIndexLocked(modeId);
-            if (physIndex < 0) {
-                Slog.w(TAG, "Requested mode ID " + modeId + " not available,"
-                        + " trying with default mode ID");
-                modeId = mDefaultModeId;
-                physIndex = findDisplayInfoIndexLocked(modeId);
-            }
-            if (mActivePhysIndex == physIndex) {
+        public boolean updateActiveModeLocked(int activePhysIndex) {
+            if (mActivePhysIndex == activePhysIndex) {
                 return false;
             }
-            SurfaceControl.setActiveConfig(getDisplayTokenLocked(), physIndex);
-            mActivePhysIndex = physIndex;
-            mActiveModeId = modeId;
-            mActiveModeInvalid = false;
+            mActivePhysIndex = activePhysIndex;
+            mActiveModeId = findMatchingModeIdLocked(activePhysIndex);
+            mActiveModeInvalid = mActiveModeId == 0;
+            if (mActiveModeInvalid) {
+                Slog.w(TAG, "In unknown mode after setting allowed configs"
+                        + ": allowedPhysIndexes=" + mAllowedPhysIndexes
+                        + ", activePhysIndex=" + mActivePhysIndex);
+            }
             return true;
         }
 
+        public void updateAllowedModesLocked(int[] allowedModes) {
+            if (Arrays.equals(allowedModes, mAllowedModeIds) && !mAllowedModeIdsInvalid) {
+                return;
+            }
+            if (updateAllowedModesInternalLocked(allowedModes)) {
+                updateDeviceInfoLocked();
+            }
+        }
+
+        public boolean updateAllowedModesInternalLocked(int[] allowedModes) {
+            if (DEBUG) {
+                Slog.w(TAG, "updateAllowedModesInternalLocked(allowedModes="
+                        + Arrays.toString(allowedModes) + ")");
+            }
+            int[] allowedPhysIndexes = new int[allowedModes.length];
+            int size = 0;
+            for (int modeId : allowedModes) {
+                int physIndex = findDisplayInfoIndexLocked(modeId);
+                if (physIndex < 0) {
+                    Slog.w(TAG, "Requested mode ID " + modeId + " not available,"
+                            + " dropping from allowed set.");
+                } else {
+                    allowedPhysIndexes[size++] = physIndex;
+                }
+            }
+
+            // If we couldn't find one or more of the suggested allowed modes then we need to
+            // shrink the array to its actual size.
+            if (size != allowedModes.length) {
+                allowedPhysIndexes = Arrays.copyOf(allowedPhysIndexes, size);
+            }
+
+            // If we found no suitable modes, then we try again with the default mode which we
+            // assume has a suitable physical config.
+            if (size == 0) {
+                if (DEBUG) {
+                    Slog.w(TAG, "No valid modes allowed, falling back to default mode (id="
+                            + mDefaultModeId + ")");
+                }
+                allowedModes = new int[] { mDefaultModeId };
+                allowedPhysIndexes = new int[] { findDisplayInfoIndexLocked(mDefaultModeId) };
+            }
+
+            mAllowedModeIds = allowedModes;
+            mAllowedModeIdsInvalid = false;
+
+            if (Arrays.equals(mAllowedPhysIndexes, allowedPhysIndexes)) {
+                return false;
+            }
+            mAllowedPhysIndexes = allowedPhysIndexes;
+
+            if (DEBUG) {
+                Slog.w(TAG, "Setting allowed physical configs: allowedPhysIndexes="
+                        + Arrays.toString(allowedPhysIndexes));
+            }
+
+            SurfaceControl.setAllowedDisplayConfigs(getDisplayTokenLocked(), allowedPhysIndexes);
+            int activePhysIndex = SurfaceControl.getActiveConfig(getDisplayTokenLocked());
+            return updateActiveModeLocked(activePhysIndex);
+        }
+
         public boolean requestColorModeLocked(int colorMode) {
             if (mActiveColorMode == colorMode) {
                 return false;
@@ -650,9 +731,13 @@
         public void dumpLocked(PrintWriter pw) {
             super.dumpLocked(pw);
             pw.println("mPhysicalDisplayId=" + mPhysicalDisplayId);
+            pw.println("mAllowedPhysIndexes=" + Arrays.toString(mAllowedPhysIndexes));
+            pw.println("mAllowedModeIds=" + Arrays.toString(mAllowedModeIds));
+            pw.println("mAllowedModeIdsInvalid=" + mAllowedModeIdsInvalid);
             pw.println("mActivePhysIndex=" + mActivePhysIndex);
             pw.println("mActiveModeId=" + mActiveModeId);
             pw.println("mActiveColorMode=" + mActiveColorMode);
+            pw.println("mDefaultModeId=" + mDefaultModeId);
             pw.println("mState=" + Display.stateToString(mState));
             pw.println("mBrightness=" + mBrightness);
             pw.println("mBacklight=" + mBacklight);
@@ -687,10 +772,31 @@
             return -1;
         }
 
+        private int findMatchingModeIdLocked(int physIndex) {
+            SurfaceControl.PhysicalDisplayInfo info = mDisplayInfos[physIndex];
+            for (int i = 0; i < mSupportedModes.size(); i++) {
+                DisplayModeRecord record = mSupportedModes.valueAt(i);
+                if (record.hasMatchingMode(info)) {
+                    return record.mMode.getModeId();
+                }
+            }
+            return 0;
+        }
+
         private void updateDeviceInfoLocked() {
             mInfo = null;
             sendDisplayDeviceEventLocked(this, DISPLAY_DEVICE_EVENT_CHANGED);
         }
+
+        private Display.Mode[] getDisplayModes(SparseArray<DisplayModeRecord> records) {
+            final int size = records.size();
+            Display.Mode[] modes = new Display.Mode[size];
+            for (int i = 0; i < size; i++) {
+                DisplayModeRecord record = records.valueAt(i);
+                modes[i] = record.mMode;
+            }
+            return modes;
+        }
     }
 
     /** Supplies a context whose Resources apply runtime-overlays */
@@ -745,12 +851,23 @@
         }
 
         @Override
-        public void onConfigChanged(long timestampNanos, long physicalDisplayId, int configId) {
+        public void onConfigChanged(long timestampNanos, long physicalDisplayId, int physIndex) {
             if (DEBUG) {
                 Slog.d(TAG, "onConfigChanged("
                         + "timestampNanos=" + timestampNanos
-                        + ", builtInDisplayId=" + physicalDisplayId
-                        + ", configId=" + configId + ")");
+                        + ", physicalDisplayId=" + physicalDisplayId
+                        + ", physIndex=" + physIndex + ")");
+            }
+            synchronized (getSyncRoot()) {
+                LocalDisplayDevice device = mDevices.get(physicalDisplayId);
+                if (device == null) {
+                    if (DEBUG) {
+                        Slog.d(TAG, "Received config change for unhandled physical display: "
+                                + "physicalDisplayId=" + physicalDisplayId);
+                    }
+                    return;
+                }
+                device.onActivePhysicalDisplayModeChangedLocked(physIndex);
             }
         }
     }
diff --git a/services/core/java/com/android/server/display/LogicalDisplay.java b/services/core/java/com/android/server/display/LogicalDisplay.java
index b21f0a7..a7b9051 100644
--- a/services/core/java/com/android/server/display/LogicalDisplay.java
+++ b/services/core/java/com/android/server/display/LogicalDisplay.java
@@ -87,7 +87,7 @@
     // True if the logical display has unique content.
     private boolean mHasContent;
 
-    private int mRequestedModeId;
+    private int[] mAllowedDisplayModes = new int[0];
     private int mRequestedColorMode;
 
     // The display offsets to apply to the display projection.
@@ -354,12 +354,14 @@
         // Set the layer stack.
         device.setLayerStackLocked(t, isBlanked ? BLANK_LAYER_STACK : mLayerStack);
 
-        // Set the color mode and mode.
+        // Set the color mode and allowed display mode.
         if (device == mPrimaryDisplayDevice) {
-            device.requestDisplayModesLocked(
-                    mRequestedColorMode, mRequestedModeId);
+            device.setAllowedDisplayModesLocked(mAllowedDisplayModes);
+            device.setRequestedColorModeLocked(mRequestedColorMode);
         } else {
-            device.requestDisplayModesLocked(0, 0);  // Revert to default.
+            // Reset to default for non primary displays
+            device.setAllowedDisplayModesLocked(new int[] {0});
+            device.setRequestedColorModeLocked(0);
         }
 
         // Only grab the display info now as it may have been changed based on the requests above.
@@ -463,17 +465,17 @@
     }
 
     /**
-     * Requests the given mode.
+     * Sets the display modes the system is free to switch between.
      */
-    public void setRequestedModeIdLocked(int modeId) {
-        mRequestedModeId = modeId;
+    public void setAllowedDisplayModesLocked(int[] modes) {
+        mAllowedDisplayModes = modes;
     }
 
     /**
-     * Returns the pending requested mode.
+     * Returns the display modes the system is free to switch between.
      */
-    public int getRequestedModeIdLocked() {
-        return mRequestedModeId;
+    public int[] getAllowedDisplayModesLocked() {
+        return mAllowedDisplayModes;
     }
 
     /**
@@ -532,7 +534,7 @@
         pw.println("mDisplayId=" + mDisplayId);
         pw.println("mLayerStack=" + mLayerStack);
         pw.println("mHasContent=" + mHasContent);
-        pw.println("mRequestedMode=" + mRequestedModeId);
+        pw.println("mAllowedDisplayModes=" + Arrays.toString(mAllowedDisplayModes));
         pw.println("mRequestedColorMode=" + mRequestedColorMode);
         pw.println("mDisplayOffset=(" + mDisplayOffsetX + ", " + mDisplayOffsetY + ")");
         pw.println("mDisplayScalingDisabled=" + mDisplayScalingDisabled);
diff --git a/services/core/java/com/android/server/display/OverlayDisplayAdapter.java b/services/core/java/com/android/server/display/OverlayDisplayAdapter.java
index 2f507d1..60cfbd0 100644
--- a/services/core/java/com/android/server/display/OverlayDisplayAdapter.java
+++ b/services/core/java/com/android/server/display/OverlayDisplayAdapter.java
@@ -16,9 +16,6 @@
 
 package com.android.server.display;
 
-import com.android.internal.util.DumpUtils;
-import com.android.internal.util.IndentingPrintWriter;
-
 import android.content.Context;
 import android.database.ContentObserver;
 import android.graphics.SurfaceTexture;
@@ -32,6 +29,9 @@
 import android.view.Surface;
 import android.view.SurfaceControl;
 
+import com.android.internal.util.DumpUtils;
+import com.android.internal.util.IndentingPrintWriter;
+
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -315,7 +315,16 @@
         }
 
         @Override
-        public void requestDisplayModesLocked(int color, int id) {
+        public void setAllowedDisplayModesLocked(int[] modes) {
+            final int id;
+            if (modes.length > 0) {
+                // The allowed modes should be ordered by preference, so just use the first mode
+                // here.
+                id = modes[0];
+            } else {
+                // If we don't have any allowed modes, just use the default mode.
+                id = 0;
+            }
             int index = -1;
             if (id == 0) {
                 // Use the default.
diff --git a/services/core/java/com/android/server/location/GnssLocationProvider.java b/services/core/java/com/android/server/location/GnssLocationProvider.java
index 9ab9975..71ec5b0 100644
--- a/services/core/java/com/android/server/location/GnssLocationProvider.java
+++ b/services/core/java/com/android/server/location/GnssLocationProvider.java
@@ -142,7 +142,6 @@
 
     // these need to match ElapsedRealtimeFlags enum in types.hal
     private static final int ELAPSED_REALTIME_HAS_TIMESTAMP_NS = 1;
-    private static final int ELAPSED_REALTIME_HAS_TIME_UNCERTAINTY_NS = 2;
 
     // IMPORTANT - the GPS_DELETE_* symbols here must match GnssAidingData enum in IGnss.hal
     private static final int GPS_DELETE_EPHEMERIS = 0x0001;
@@ -769,18 +768,15 @@
         float bearingAccuracyDegrees = location.getBearingAccuracyDegrees();
         long timestamp = location.getTime();
 
-        int elapsedRealtimeFlags = ELAPSED_REALTIME_HAS_TIMESTAMP_NS
-                | (location.hasElapsedRealtimeUncertaintyNanos()
-                        ? ELAPSED_REALTIME_HAS_TIME_UNCERTAINTY_NS : 0);
+        int elapsedRealtimeFlags = ELAPSED_REALTIME_HAS_TIMESTAMP_NS;
         long elapsedRealtimeNanos = location.getElapsedRealtimeNanos();
-        long elapsedRealtimeUncertaintyNanos = location.getElapsedRealtimeUncertaintyNanos();
 
         native_inject_best_location(
                 gnssLocationFlags, latitudeDegrees, longitudeDegrees,
                 altitudeMeters, speedMetersPerSec, bearingDegrees,
                 horizontalAccuracyMeters, verticalAccuracyMeters,
                 speedAccuracyMetersPerSecond, bearingAccuracyDegrees, timestamp,
-                elapsedRealtimeFlags, elapsedRealtimeNanos, elapsedRealtimeUncertaintyNanos);
+                elapsedRealtimeFlags, elapsedRealtimeNanos);
     }
 
     /** Returns true if the location request is too frequent. */
@@ -2174,8 +2170,7 @@
             double altitudeMeters, float speedMetersPerSec, float bearingDegrees,
             float horizontalAccuracyMeters, float verticalAccuracyMeters,
             float speedAccuracyMetersPerSecond, float bearingAccuracyDegrees,
-            long timestamp, int elapsedRealtimeFlags, long elapsedRealtimeNanos,
-            long elapsedRealtimeUncertaintyNanos);
+            long timestamp, int elapsedRealtimeFlags, long elapsedRealtimeNanos);
 
     private native void native_inject_location(double latitude, double longitude, float accuracy);
 
diff --git a/services/core/jni/com_android_server_location_GnssLocationProvider.cpp b/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
index e8882ec..d39f20c 100644
--- a/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
+++ b/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
@@ -491,10 +491,6 @@
         SET(ElapsedRealtimeNanos, location.elapsedRealtime.timestampNs);
     }
 
-    if (flags & ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS) {
-        SET(ElapsedUncertaintyRealtimeNanos, location.elapsedRealtime.timeUncertaintyNs);
-    }
-
     return object.get();
 }
 
@@ -525,8 +521,7 @@
         jdouble altitudeMeters, jfloat speedMetersPerSec, jfloat bearingDegrees,
         jfloat horizontalAccuracyMeters, jfloat verticalAccuracyMeters,
         jfloat speedAccuracyMetersPerSecond, jfloat bearingAccuracyDegrees,
-        jlong timestamp, jint elapsedRealtimeFlags, jlong elapsedRealtimeNanos,
-        jlong elapsedRealtimeUncertaintyNanos) {
+        jlong timestamp, jint elapsedRealtimeFlags, jlong elapsedRealtimeNanos) {
     GnssLocation_V2_0 location;
     location.v1_0 = createGnssLocation_V1_0(
             gnssLocationFlags, latitudeDegrees, longitudeDegrees, altitudeMeters,
@@ -536,7 +531,6 @@
 
     location.elapsedRealtime.flags = static_cast<uint16_t>(elapsedRealtimeFlags);
     location.elapsedRealtime.timestampNs = static_cast<uint64_t>(elapsedRealtimeNanos);
-    location.elapsedRealtime.timeUncertaintyNs = static_cast<uint64_t>(elapsedRealtimeUncertaintyNanos);
 
     return location;
 }
@@ -1893,8 +1887,7 @@
         jfloat bearingAccuracyDegrees,
         jlong timestamp,
         jint elapsedRealtimeFlags,
-        jlong elapsedRealtimeNanos,
-        jlong elapsedRealtimeUncertaintyNanos) {
+        jlong elapsedRealtimeNanos) {
     if (gnssHal_V2_0 != nullptr) {
         GnssLocation_V2_0 location = createGnssLocation_V2_0(
                 gnssLocationFlags,
@@ -1909,8 +1902,7 @@
                 bearingAccuracyDegrees,
                 timestamp,
                 elapsedRealtimeFlags,
-                elapsedRealtimeNanos,
-                elapsedRealtimeUncertaintyNanos);
+                elapsedRealtimeNanos);
         auto result = gnssHal_V2_0->injectBestLocation_2_0(location);
 
         if (!result.isOk() || !result) {
@@ -2821,7 +2813,7 @@
             android_location_GnssLocationProvider_read_nmea)},
     {"native_inject_time", "(JJI)V", reinterpret_cast<void *>(
             android_location_GnssLocationProvider_inject_time)},
-    {"native_inject_best_location", "(IDDDFFFFFFJIJJ)V", reinterpret_cast<void *>(
+    {"native_inject_best_location", "(IDDDFFFFFFJIJ)V", reinterpret_cast<void *>(
             android_location_GnssLocationProvider_inject_best_location)},
     {"native_inject_location", "(DDF)V", reinterpret_cast<void *>(
             android_location_GnssLocationProvider_inject_location)},
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index f496e81..36251f5 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -172,7 +172,6 @@
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.ParcelFileDescriptor;
-import android.os.ParcelableException;
 import android.os.PersistableBundle;
 import android.os.PowerManager;
 import android.os.PowerManagerInternal;
@@ -5338,9 +5337,14 @@
      */
     @Override
     public long getRequiredStrongAuthTimeout(ComponentName who, int userId, boolean parent) {
-        if (!mHasFeature || !mLockPatternUtils.hasSecureLockScreen()) {
+        if (!mHasFeature) {
             return DevicePolicyManager.DEFAULT_STRONG_AUTH_TIMEOUT_MS;
         }
+        if (!mLockPatternUtils.hasSecureLockScreen()) {
+            // No strong auth timeout on devices not supporting the
+            // {@link PackageManager#FEATURE_SECURE_LOCK_SCREEN} feature
+            return 0;
+        }
         enforceFullCrossUsersPermission(userId);
         synchronized (getLockObject()) {
             if (who != null) {
diff --git a/services/tests/runtests.py b/services/tests/runtests.py
index f19cc5d..4c8b4ba 100755
--- a/services/tests/runtests.py
+++ b/services/tests/runtests.py
@@ -19,7 +19,7 @@
 import sys
 
 INSTRUMENTED_PACKAGE_RUNNER = ('com.android.frameworks.servicestests/'
-                               'android.support.test.runner.AndroidJUnitRunner')
+                               'androidx.test.runner.AndroidJUnitRunner')
 
 PACKAGE_WHITELIST = (
     "com.android.server",
diff --git a/services/tests/servicestests/src/com/android/server/usage/AppTimeLimitControllerTests.java b/services/tests/servicestests/src/com/android/server/usage/AppTimeLimitControllerTests.java
index 8caa39d..1f86171 100644
--- a/services/tests/servicestests/src/com/android/server/usage/AppTimeLimitControllerTests.java
+++ b/services/tests/servicestests/src/com/android/server/usage/AppTimeLimitControllerTests.java
@@ -175,9 +175,9 @@
     /** Verify app usage limit observer is added */
     @Test
     public void testAppUsageLimitObserver_AddObserver() {
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         assertTrue("Observer wasn't added", hasAppUsageLimitObserver(UID, OBS_ID1));
-        addAppUsageLimitObserver(OBS_ID2, GROUP_GAME, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID2, GROUP_GAME, TIME_30_MIN, TIME_30_MIN);
         assertTrue("Observer wasn't added", hasAppUsageLimitObserver(UID, OBS_ID2));
         assertTrue("Observer wasn't added", hasAppUsageLimitObserver(UID, OBS_ID1));
     }
@@ -203,7 +203,7 @@
     /** Verify app usage limit observer is removed */
     @Test
     public void testAppUsageLimitObserver_RemoveObserver() {
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         assertTrue("Observer wasn't added", hasAppUsageLimitObserver(UID, OBS_ID1));
         mController.removeAppUsageLimitObserver(UID, OBS_ID1, USER_ID);
         assertFalse("Observer wasn't removed", hasAppUsageLimitObserver(UID, OBS_ID1));
@@ -290,9 +290,9 @@
     /** Re-adding an observer should result in only one copy */
     @Test
     public void testAppUsageLimitObserver_ObserverReAdd() {
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         assertTrue("Observer wasn't added", hasAppUsageLimitObserver(UID, OBS_ID1));
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_10_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_10_MIN, TIME_10_MIN);
         assertTrue("Observer wasn't added",
                 getAppUsageLimitObserver(UID, OBS_ID1).getTimeLimitMs() == TIME_10_MIN);
         mController.removeAppUsageLimitObserver(UID, OBS_ID1, USER_ID);
@@ -304,7 +304,7 @@
     public void testAllObservers_ExclusiveObserverIds() {
         addAppUsageObserver(OBS_ID1, GROUP1, TIME_10_MIN);
         addUsageSessionObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_1_MIN);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_10_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_10_MIN, TIME_10_MIN);
         assertTrue("Observer wasn't added", hasAppUsageObserver(UID, OBS_ID1));
         assertTrue("Observer wasn't added", hasUsageSessionObserver(UID, OBS_ID1));
         assertTrue("Observer wasn't added", hasAppUsageLimitObserver(UID, OBS_ID1));
@@ -396,7 +396,7 @@
     @Test
     public void testAppUsageLimitObserver_Accumulation() throws Exception {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         startUsage(PKG_SOC1);
         // Add 10 mins
         setTime(TIME_10_MIN);
@@ -456,7 +456,7 @@
     @Test
     public void testAppUsageLimitObserver_TimeoutOtherApp() throws Exception {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, 4_000L);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, 4_000L, 4_000L);
         startUsage(PKG_SOC2);
         assertFalse(mLimitReachedLatch.await(6_000L, TimeUnit.MILLISECONDS));
         setTime(6_000L);
@@ -498,7 +498,7 @@
     @Test
     public void testAppUsageLimitObserver_Timeout() throws Exception {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, 4_000L);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, 4_000L, 4_000L);
         startUsage(PKG_SOC1);
         setTime(6_000L);
         assertTrue(mLimitReachedLatch.await(6_000L, TimeUnit.MILLISECONDS));
@@ -551,7 +551,7 @@
         setTime(TIME_10_MIN);
         startUsage(PKG_GAME1);
         setTime(TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID2, GROUP_GAME, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID2, GROUP_GAME, TIME_30_MIN, TIME_30_MIN);
         setTime(TIME_30_MIN + TIME_10_MIN);
         stopUsage(PKG_GAME1);
         assertFalse(mLimitReachedLatch.await(1_000L, TimeUnit.MILLISECONDS));
@@ -612,7 +612,7 @@
         startUsage(PKG_SOC1);
         setTime(TIME_10_MIN);
         // 10 second time limit
-        addAppUsageLimitObserver(OBS_ID1, GROUP_SOC, 10_000L);
+        addAppUsageLimitObserver(OBS_ID1, GROUP_SOC, 10_000L, 10_000L);
         setTime(TIME_10_MIN + 5_000L);
         // Shouldn't call back in 6 seconds
         assertFalse(mLimitReachedLatch.await(6_000L, TimeUnit.MILLISECONDS));
@@ -692,23 +692,23 @@
     public void testAppUsageLimitObserver_MaxObserverLimit() throws Exception {
         boolean receivedException = false;
         int ANOTHER_UID = UID + 1;
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID2, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID3, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID4, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID5, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID6, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID7, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID8, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID9, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID10, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID2, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID3, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID4, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID5, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID6, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID7, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID8, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID9, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID10, GROUP1, TIME_30_MIN, TIME_30_MIN);
         // Readding an observer should not cause an IllegalStateException
-        addAppUsageLimitObserver(OBS_ID5, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID5, GROUP1, TIME_30_MIN, TIME_30_MIN);
         // Adding an observer for a different uid shouldn't cause an IllegalStateException
         mController.addAppUsageLimitObserver(
-                ANOTHER_UID, OBS_ID11, GROUP1, TIME_30_MIN, null, USER_ID);
+                ANOTHER_UID, OBS_ID11, GROUP1, TIME_30_MIN, TIME_30_MIN, null, USER_ID);
         try {
-            addAppUsageLimitObserver(OBS_ID11, GROUP1, TIME_30_MIN);
+            addAppUsageLimitObserver(OBS_ID11, GROUP1, TIME_30_MIN, TIME_30_MIN);
         } catch (IllegalStateException ise) {
             receivedException = true;
         }
@@ -748,9 +748,9 @@
     public void testAppUsageLimitObserver_MinimumTimeLimit() throws Exception {
         boolean receivedException = false;
         // adding an observer with a one minute time limit should not cause an exception
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, MIN_TIME_LIMIT);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, MIN_TIME_LIMIT, MIN_TIME_LIMIT);
         try {
-            addAppUsageLimitObserver(OBS_ID1, GROUP1, MIN_TIME_LIMIT - 1);
+            addAppUsageLimitObserver(OBS_ID1, GROUP1, MIN_TIME_LIMIT - 1, MIN_TIME_LIMIT - 1);
         } catch (IllegalArgumentException iae) {
             receivedException = true;
         }
@@ -807,7 +807,7 @@
     @Test
     public void testAppUsageLimitObserver_ConcurrentUsage() throws Exception {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         AppTimeLimitController.UsageGroup group = getAppUsageLimitObserver(UID, OBS_ID1);
         startUsage(PKG_SOC1);
         // Add 10 mins
@@ -967,7 +967,7 @@
     /** Verify app usage limit observer added correctly reports its total usage limit */
     @Test
     public void testAppUsageLimitObserver_GetTotalUsageLimit() {
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         AppTimeLimitController.AppUsageLimitGroup group = getAppUsageLimitObserver(UID, OBS_ID1);
         assertNotNull("Observer wasn't added", group);
         assertEquals("Observer didn't correctly report total usage limit",
@@ -978,7 +978,7 @@
     @Test
     public void testAppUsageLimitObserver_GetUsageRemaining() {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
         startUsage(PKG_SOC1);
         setTime(TIME_10_MIN);
         stopUsage(PKG_SOC1);
@@ -993,8 +993,8 @@
      */
     @Test
     public void testAppUsageLimitObserver_GetAppUsageLimit() {
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID2, GROUP_SOC, TIME_10_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID2, GROUP_SOC, TIME_10_MIN, TIME_10_MIN);
         UsageStatsManagerInternal.AppUsageLimitData group = getAppUsageLimit(PKG_SOC1);
         assertEquals("Observer with the smallest usage limit remaining wasn't returned",
                 TIME_10_MIN, group.getTotalUsageLimit());
@@ -1006,8 +1006,8 @@
     @Test
     public void testAppUsageLimitObserver_GetAppUsageLimitUsed() {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID2, GROUP_SOC, TIME_10_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID2, GROUP_SOC, TIME_10_MIN, TIME_10_MIN);
         startUsage(PKG_GAME1);
         setTime(TIME_10_MIN * 2 + TIME_1_MIN);
         stopUsage(PKG_GAME1);
@@ -1024,8 +1024,8 @@
     @Test
     public void testAppUsageLimitObserver_GetAppUsageLimitAllUsed() {
         setTime(0L);
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN);
-        addAppUsageLimitObserver(OBS_ID2, GROUP_SOC, TIME_10_MIN);
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_30_MIN, TIME_30_MIN);
+        addAppUsageLimitObserver(OBS_ID2, GROUP_SOC, TIME_10_MIN, TIME_10_MIN);
         startUsage(PKG_SOC1);
         setTime(TIME_10_MIN);
         stopUsage(PKG_SOC1);
@@ -1035,10 +1035,21 @@
                 0L, group.getUsageRemaining());
     }
 
+    /** Verify that a limit of 0 is not allowed. */
+    @Test
+    public void testAppUsageLimitObserver_ZeroTimeLimitIsNotAllowed() {
+        try {
+            addAppUsageLimitObserver(OBS_ID1, GROUP1, 0, 0);
+            fail("timeLimit of 0 should not be allowed.");
+        } catch (IllegalArgumentException expected) {
+            // Exception expected.
+        }
+    }
+
     /** Verify that a limit of 0 is allowed for the special case of re-registering an observer. */
     @Test
-    public void testAppUsageLimitObserver_ZeroTimeLimitIsAllowed() {
-        addAppUsageLimitObserver(OBS_ID1, GROUP1, 0);
+    public void testAppUsageLimitObserver_ZeroTimeRemainingIsAllowed() {
+        addAppUsageLimitObserver(OBS_ID1, GROUP1, TIME_1_MIN, 0);
         AppTimeLimitController.AppUsageLimitGroup group = getAppUsageLimitObserver(UID, OBS_ID1);
         assertNotNull("Observer wasn't added", group);
         assertEquals("Usage remaining was not 0.", 0, group.getUsageRemaining());
@@ -1066,8 +1077,10 @@
                 null, null, USER_ID);
     }
 
-    private void addAppUsageLimitObserver(int observerId, String[] packages, long timeLimit) {
-        mController.addAppUsageLimitObserver(UID, observerId, packages, timeLimit, null, USER_ID);
+    private void addAppUsageLimitObserver(int observerId, String[] packages, long timeLimit,
+            long timeRemaining) {
+        mController.addAppUsageLimitObserver(UID, observerId, packages, timeLimit, timeRemaining,
+                null, USER_ID);
     }
 
     /** Is there still an app usage observer by that id */
diff --git a/services/usage/java/com/android/server/usage/AppTimeLimitController.java b/services/usage/java/com/android/server/usage/AppTimeLimitController.java
index 731cbf4..f3d6387 100644
--- a/services/usage/java/com/android/server/usage/AppTimeLimitController.java
+++ b/services/usage/java/com/android/server/usage/AppTimeLimitController.java
@@ -511,8 +511,10 @@
 
     class AppUsageLimitGroup extends UsageGroup {
         public AppUsageLimitGroup(UserData user, ObserverAppData observerApp, int observerId,
-                String[] observed, long timeLimitMs, PendingIntent limitReachedCallback) {
+                String[] observed, long timeLimitMs, long timeRemainingMs,
+                PendingIntent limitReachedCallback) {
             super(user, observerApp, observerId, observed, timeLimitMs, limitReachedCallback);
+            mUsageTimeMs = timeLimitMs - timeRemainingMs;
         }
 
         @Override
@@ -839,9 +841,9 @@
      * Existing app usage limit observer with the same observerId will be removed.
      */
     public void addAppUsageLimitObserver(int requestingUid, int observerId, String[] observed,
-            long timeLimit, PendingIntent callbackIntent, @UserIdInt int userId) {
-        // Allow the special case of the limit being 0, but with no callback.
-        if (timeLimit != 0L && timeLimit < getMinTimeLimit()) {
+            long timeLimit, long timeRemaining, PendingIntent callbackIntent,
+            @UserIdInt int userId) {
+        if (timeLimit < getMinTimeLimit()) {
             throw new IllegalArgumentException("Time limit must be >= " + getMinTimeLimit());
         }
         synchronized (mLock) {
@@ -859,7 +861,7 @@
                         "Too many app usage observers added by uid " + requestingUid);
             }
             group = new AppUsageLimitGroup(user, observerApp, observerId, observed, timeLimit,
-                    timeLimit == 0L ? null : callbackIntent);
+                    timeRemaining, timeRemaining == 0L ? null : callbackIntent);
             observerApp.appUsageLimitGroups.append(observerId, group);
 
             if (DEBUG) {
diff --git a/services/usage/java/com/android/server/usage/UsageStatsService.java b/services/usage/java/com/android/server/usage/UsageStatsService.java
index b14d722..27fdbcb 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsService.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsService.java
@@ -1399,7 +1399,8 @@
 
         @Override
         public void registerAppUsageLimitObserver(int observerId, String[] packages,
-                long timeLimitMs, PendingIntent callbackIntent, String callingPackage) {
+                long timeLimitMs, long timeRemainingMs, PendingIntent callbackIntent,
+                String callingPackage) {
             if (!hasPermissions(callingPackage,
                     Manifest.permission.SUSPEND_APPS, Manifest.permission.OBSERVE_APP_USAGE)) {
                 throw new SecurityException("Caller doesn't have both SUSPEND_APPS and "
@@ -1409,7 +1410,11 @@
             if (packages == null || packages.length == 0) {
                 throw new IllegalArgumentException("Must specify at least one package");
             }
-            if (callbackIntent == null && timeLimitMs != 0L) {
+            if (timeRemainingMs > timeLimitMs) {
+                throw new IllegalArgumentException(
+                        "Remaining time can't be greater than total time.");
+            }
+            if (callbackIntent == null && timeRemainingMs != 0L) {
                 throw new NullPointerException("callbackIntent can't be null");
             }
             final int callingUid = Binder.getCallingUid();
@@ -1417,7 +1422,7 @@
             final long token = Binder.clearCallingIdentity();
             try {
                 UsageStatsService.this.registerAppUsageLimitObserver(callingUid, observerId,
-                        packages, timeLimitMs, callbackIntent, userId);
+                        packages, timeLimitMs, timeRemainingMs, callbackIntent, userId);
             } finally {
                 Binder.restoreCallingIdentity(token);
             }
@@ -1545,9 +1550,9 @@
     }
 
     void registerAppUsageLimitObserver(int callingUid, int observerId, String[] packages,
-            long timeLimitMs, PendingIntent callbackIntent, int userId) {
-        mAppTimeLimit.addAppUsageLimitObserver(callingUid, observerId, packages, timeLimitMs,
-                callbackIntent, userId);
+            long timeLimitMs, long timeRemainingMs, PendingIntent callbackIntent, int userId) {
+        mAppTimeLimit.addAppUsageLimitObserver(callingUid, observerId, packages,
+                timeLimitMs, timeRemainingMs, callbackIntent, userId);
     }
 
     void unregisterAppUsageLimitObserver(int callingUid, int observerId, int userId) {
diff --git a/startop/iorap/tests/Android.bp b/startop/iorap/tests/Android.bp
index 5ac4a46..4359978 100644
--- a/startop/iorap/tests/Android.bp
+++ b/startop/iorap/tests/Android.bp
@@ -29,7 +29,7 @@
 
       // test android dependencies
       "platform-test-annotations",
-      "android-support-test",
+      "androidx.test.rules",
       // test framework dependencies
       "mockito-target-inline-minus-junit4",
       // "mockito-target-minus-junit4",
diff --git a/startop/iorap/tests/AndroidManifest.xml b/startop/iorap/tests/AndroidManifest.xml
index 99f4add..b967e72 100644
--- a/startop/iorap/tests/AndroidManifest.xml
+++ b/startop/iorap/tests/AndroidManifest.xml
@@ -22,7 +22,7 @@
 
     <!--suppress AndroidDomInspection -->
     <instrumentation
-        android:name="android.support.test.runner.AndroidJUnitRunner"
+        android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="com.google.android.startop.iorap.tests" />
 
       <!--
diff --git a/startop/iorap/tests/AndroidTest.xml b/startop/iorap/tests/AndroidTest.xml
index 919154d..bcd1103 100644
--- a/startop/iorap/tests/AndroidTest.xml
+++ b/startop/iorap/tests/AndroidTest.xml
@@ -44,7 +44,7 @@
 
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.google.android.startop.iorap.tests" />
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
     </test>
 </configuration>
 
diff --git a/startop/iorap/tests/src/com/google/android/startop/iorap/IIorapIntegrationTest.kt b/startop/iorap/tests/src/com/google/android/startop/iorap/IIorapIntegrationTest.kt
index 16dcbe2..b1e6194 100644
--- a/startop/iorap/tests/src/com/google/android/startop/iorap/IIorapIntegrationTest.kt
+++ b/startop/iorap/tests/src/com/google/android/startop/iorap/IIorapIntegrationTest.kt
@@ -14,12 +14,14 @@
 
 package com.google.android.startop.iorap
 
-import android.net.Uri
 import android.os.ServiceManager
-import android.support.test.filters.MediumTest
+import androidx.test.filters.MediumTest
 import org.junit.Test
-import org.junit.Ignore
-import org.mockito.Mockito.*
+import org.mockito.Mockito.argThat
+import org.mockito.Mockito.eq
+import org.mockito.Mockito.inOrder
+import org.mockito.Mockito.spy
+import org.mockito.Mockito.timeout
 
 // @Ignore("Test is disabled until iorapd is added to init and there's selinux policies for it")
 @MediumTest
@@ -27,7 +29,7 @@
     /**
      * @throws ServiceManager.ServiceNotFoundException if iorapd service could not be found
      */
-    private val iorapService : IIorap by lazy {
+    private val iorapService: IIorap by lazy {
         // TODO: connect to 'iorapd.stub' which doesn't actually do any work other than reply.
         IIorap.Stub.asInterface(ServiceManager.getServiceOrThrow("iorapd"))
 
@@ -39,7 +41,7 @@
 
     // A dummy binder stub implementation is required to use with mockito#spy.
     // Mockito overrides the methods at runtime and tracks how methods were invoked.
-    open class DummyTaskListener : ITaskListener.Stub()  {
+    open class DummyTaskListener : ITaskListener.Stub() {
         // Note: make parameters nullable to avoid the kotlin IllegalStateExceptions
         // from using the mockito matchers (eq, argThat, etc).
         override fun onProgress(requestId: RequestId?, result: TaskResult?) {
@@ -49,7 +51,7 @@
         }
     }
 
-    private fun testAnyMethod(func : (RequestId) -> Unit) {
+    private fun testAnyMethod(func: (RequestId) -> Unit) {
         val taskListener = spy(DummyTaskListener())!!
 
         try {
@@ -68,14 +70,13 @@
 
             // The "stub" behavior of iorapd is that every request immediately gets a response of
             //   BEGAN,ONGOING,COMPLETED
-            inOrder.verify(taskListener, timeout(100)).
-                  onProgress(eq(requestId), argThat { it!!.state == TaskResult.STATE_BEGAN })
-            inOrder.verify(taskListener, timeout(100)).
-                  onProgress(eq(requestId), argThat { it!!.state == TaskResult.STATE_ONGOING })
-            inOrder.verify(taskListener, timeout(100)).
-                  onComplete(eq(requestId), argThat { it!!.state == TaskResult.STATE_COMPLETED })
+            inOrder.verify(taskListener, timeout(100))
+                .onProgress(eq(requestId), argThat { it!!.state == TaskResult.STATE_BEGAN })
+            inOrder.verify(taskListener, timeout(100))
+                .onProgress(eq(requestId), argThat { it!!.state == TaskResult.STATE_ONGOING })
+            inOrder.verify(taskListener, timeout(100))
+                .onComplete(eq(requestId), argThat { it!!.state == TaskResult.STATE_COMPLETED })
             inOrder.verifyNoMoreInteractions()
-
         } finally {
             // iorapService.setTaskListener(null)
             // FIXME: null is broken, C++ side sees a non-null object.
@@ -96,7 +97,7 @@
 
     @Test
     fun testOnAppIntentEvent() {
-        testAnyMethod { requestId : RequestId ->
+        testAnyMethod { requestId: RequestId ->
             iorapService.onAppIntentEvent(requestId, AppIntentEvent.createDefaultIntentChanged(
                     ActivityInfo("dont care", "dont care"),
                     ActivityInfo("dont care 2", "dont care 2")))
@@ -105,7 +106,7 @@
 
     @Test
     fun testOnSystemServiceEvent() {
-        testAnyMethod { requestId : RequestId ->
+        testAnyMethod { requestId: RequestId ->
             iorapService.onSystemServiceEvent(requestId,
                     SystemServiceEvent(SystemServiceEvent.TYPE_START))
         }
@@ -113,9 +114,9 @@
 
     @Test
     fun testOnSystemServiceUserEvent() {
-        testAnyMethod { requestId : RequestId ->
+        testAnyMethod { requestId: RequestId ->
             iorapService.onSystemServiceUserEvent(requestId,
-                    SystemServiceUserEvent(SystemServiceUserEvent.TYPE_START_USER,0))
+                    SystemServiceUserEvent(SystemServiceUserEvent.TYPE_START_USER, 0))
         }
     }
 }
diff --git a/startop/iorap/tests/src/com/google/android/startop/iorap/ParcelablesTest.kt b/startop/iorap/tests/src/com/google/android/startop/iorap/ParcelablesTest.kt
index 4abbb3e..8fa0cde 100644
--- a/startop/iorap/tests/src/com/google/android/startop/iorap/ParcelablesTest.kt
+++ b/startop/iorap/tests/src/com/google/android/startop/iorap/ParcelablesTest.kt
@@ -17,7 +17,7 @@
 import android.net.Uri
 import android.os.Parcel
 import android.os.Parcelable
-import android.support.test.filters.SmallTest
+import androidx.test.filters.SmallTest
 import org.junit.Test
 import org.junit.runner.RunWith
 import com.google.common.truth.Truth.assertThat
@@ -29,7 +29,7 @@
  */
 @SmallTest
 @RunWith(Parameterized::class)
-class ParcelablesTest<T : Parcelable>(private val inputData : InputData<T>) {
+class ParcelablesTest<T : Parcelable>(private val inputData: InputData<T>) {
     companion object {
         private val initialRequestId = RequestId.nextValueForSequence()!!
 
@@ -73,19 +73,19 @@
                         TaskResult(TaskResult.STATE_ONGOING))
         )
 
-        private fun newActivityInfo() : ActivityInfo {
+        private fun newActivityInfo(): ActivityInfo {
             return ActivityInfo("some package", "some activity")
         }
 
-        private fun newActivityInfoOther() : ActivityInfo {
+        private fun newActivityInfoOther(): ActivityInfo {
             return ActivityInfo("some package 2", "some activity 2")
         }
 
-        private fun newUri() : Uri {
+        private fun newUri(): Uri {
             return Uri.parse("https://www.google.com")
         }
 
-        private fun cloneRequestId(requestId: RequestId) : RequestId {
+        private fun cloneRequestId(requestId: RequestId): RequestId {
             val constructor = requestId::class.java.declaredConstructors[0]
             constructor.isAccessible = true
             return constructor.newInstance(requestId.requestId) as RequestId
@@ -108,7 +108,7 @@
     @Test
     fun testParcelRoundTrip() {
         // calling writeToParcel and then T::CREATOR.createFromParcel would return the same data.
-        val assertParcels = { it : T, data : InputData<T> ->
+        val assertParcels = { it: T, data: InputData<T> ->
             val parcel = Parcel.obtain()
             it.writeToParcel(parcel, 0)
             parcel.setDataPosition(0) // future reads will see all previous writes.
@@ -121,7 +121,7 @@
         assertParcels(inputData.validOther, inputData)
     }
 
-    data class InputData<T : Parcelable>(val valid : T, val validCopy : T, val validOther : T) {
+    data class InputData<T : Parcelable>(val valid: T, val validCopy: T, val validOther: T) {
         val kls = valid.javaClass
         init {
             assertThat(valid).isNotSameAs(validCopy)
@@ -130,8 +130,8 @@
             assertThat(validOther.javaClass).isEqualTo(valid.javaClass)
         }
 
-        fun createFromParcel(parcel : Parcel) : T {
-            val field  = kls.getDeclaredField("CREATOR")
+        fun createFromParcel(parcel: Parcel): T {
+            val field = kls.getDeclaredField("CREATOR")
             val creator = field.get(null) as Parcelable.Creator<T>
 
             return creator.createFromParcel(parcel)
diff --git a/startop/view_compiler/dex_builder_test/Android.bp b/startop/view_compiler/dex_builder_test/Android.bp
index ac60e96..22a3cfa 100644
--- a/startop/view_compiler/dex_builder_test/Android.bp
+++ b/startop/view_compiler/dex_builder_test/Android.bp
@@ -43,7 +43,7 @@
     sdk_version: "current",
     data: [":generate_dex_testcases", ":generate_compiled_layout1", ":generate_compiled_layout2"],
     static_libs: [
-        "android-support-test",
+        "androidx.test.rules",
         "guava",
     ],
     manifest: "AndroidManifest.xml",
diff --git a/startop/view_compiler/dex_builder_test/AndroidManifest.xml b/startop/view_compiler/dex_builder_test/AndroidManifest.xml
index 6ac5fc5..b335663 100644
--- a/startop/view_compiler/dex_builder_test/AndroidManifest.xml
+++ b/startop/view_compiler/dex_builder_test/AndroidManifest.xml
@@ -22,7 +22,7 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="android.startop.test"
                      android:label="DexBuilder Tests"/>
 
diff --git a/startop/view_compiler/dex_builder_test/AndroidTest.xml b/startop/view_compiler/dex_builder_test/AndroidTest.xml
index 92e2a71..82509b9 100644
--- a/startop/view_compiler/dex_builder_test/AndroidTest.xml
+++ b/startop/view_compiler/dex_builder_test/AndroidTest.xml
@@ -31,6 +31,6 @@
 
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="android.startop.test" />
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
     </test>
 </configuration>
diff --git a/startop/view_compiler/dex_builder_test/src/android/startop/test/DexBuilderTest.java b/startop/view_compiler/dex_builder_test/src/android/startop/test/DexBuilderTest.java
index 42d4161..f7b1674 100644
--- a/startop/view_compiler/dex_builder_test/src/android/startop/test/DexBuilderTest.java
+++ b/startop/view_compiler/dex_builder_test/src/android/startop/test/DexBuilderTest.java
@@ -14,18 +14,14 @@
 
 package android.startop.test;
 
-import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import com.google.common.io.ByteStreams;
-import dalvik.system.InMemoryDexClassLoader;
 import dalvik.system.PathClassLoader;
-import java.io.InputStream;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.nio.ByteBuffer;
+
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
 // Adding tests here requires changes in several other places. See README.md in
 // the view_compiler directory for more information.
 public class DexBuilderTest {
diff --git a/startop/view_compiler/dex_builder_test/src/android/startop/test/LayoutCompilerTest.java b/startop/view_compiler/dex_builder_test/src/android/startop/test/LayoutCompilerTest.java
index a3b1b6c..3dfb20c 100644
--- a/startop/view_compiler/dex_builder_test/src/android/startop/test/LayoutCompilerTest.java
+++ b/startop/view_compiler/dex_builder_test/src/android/startop/test/LayoutCompilerTest.java
@@ -15,18 +15,15 @@
 package android.startop.test;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.view.View;
-import com.google.common.io.ByteStreams;
-import dalvik.system.InMemoryDexClassLoader;
+
+import androidx.test.InstrumentationRegistry;
+
 import dalvik.system.PathClassLoader;
-import java.io.InputStream;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.nio.ByteBuffer;
-import org.junit.Assert;
+
 import org.junit.Test;
 
+import java.lang.reflect.Method;
+
 // Adding tests here requires changes in several other places. See README.md in
 // the view_compiler directory for more information.
 public class LayoutCompilerTest {
diff --git a/telephony/java/android/telephony/CallAttributes.java b/telephony/java/android/telephony/CallAttributes.java
index 368f0c6..3a34005 100644
--- a/telephony/java/android/telephony/CallAttributes.java
+++ b/telephony/java/android/telephony/CallAttributes.java
@@ -16,6 +16,7 @@
 
 package android.telephony;
 
+import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -29,15 +30,15 @@
  * @hide
  */
 @SystemApi
-public class CallAttributes implements Parcelable {
+public final class CallAttributes implements Parcelable {
     private PreciseCallState mPreciseCallState;
     @NetworkType
     private int mNetworkType; // TelephonyManager.NETWORK_TYPE_* ints
     private CallQuality mCallQuality;
 
 
-    public CallAttributes(PreciseCallState state, @NetworkType int networkType,
-            CallQuality callQuality) {
+    public CallAttributes(@NonNull PreciseCallState state, @NetworkType int networkType,
+            @NonNull CallQuality callQuality) {
         this.mPreciseCallState = state;
         this.mNetworkType = networkType;
         this.mCallQuality = callQuality;
@@ -59,6 +60,7 @@
     /**
      * Returns the {@link PreciseCallState} of the call.
      */
+    @NonNull
     public PreciseCallState getPreciseCallState() {
         return mPreciseCallState;
     }
@@ -96,6 +98,7 @@
     /**
      * Returns the {#link CallQuality} of the call.
      */
+    @NonNull
     public CallQuality getCallQuality() {
         return mCallQuality;
     }
diff --git a/telephony/java/android/telephony/CarrierRestrictionRules.java b/telephony/java/android/telephony/CarrierRestrictionRules.java
index 47ce632..78623e7 100644
--- a/telephony/java/android/telephony/CarrierRestrictionRules.java
+++ b/telephony/java/android/telephony/CarrierRestrictionRules.java
@@ -177,7 +177,8 @@
      * @return a list of boolean with the same size as input, indicating if each
      * {@link CarrierIdentifier} is allowed or not.
      */
-    public List<Boolean> isCarrierIdentifiersAllowed(@NonNull List<CarrierIdentifier> carrierIds) {
+    public @NonNull List<Boolean> areCarrierIdentifiersAllowed(
+            @NonNull List<CarrierIdentifier> carrierIds) {
         ArrayList<Boolean> result = new ArrayList<>(carrierIds.size());
 
         // First calculate the result for each slot independently
@@ -332,7 +333,7 @@
     /**
      * Builder for a {@link CarrierRestrictionRules}.
      */
-    public static class Builder {
+    public static final class Builder {
         private final CarrierRestrictionRules mRules;
 
         /** {@hide} */
@@ -341,14 +342,14 @@
         }
 
         /** build command */
-        public CarrierRestrictionRules build() {
+        public @NonNull CarrierRestrictionRules build() {
             return mRules;
         }
 
         /**
          * Indicate that all carriers are allowed.
          */
-        public Builder setAllCarriersAllowed() {
+        public @NonNull Builder setAllCarriersAllowed() {
             mRules.mAllowedCarriers.clear();
             mRules.mExcludedCarriers.clear();
             mRules.mCarrierRestrictionDefault = CARRIER_RESTRICTION_DEFAULT_ALLOWED;
@@ -360,7 +361,8 @@
          *
          * @param allowedCarriers list of allowed carriers
          */
-        public Builder setAllowedCarriers(List<CarrierIdentifier> allowedCarriers) {
+        public @NonNull Builder setAllowedCarriers(
+                @NonNull List<CarrierIdentifier> allowedCarriers) {
             mRules.mAllowedCarriers = new ArrayList<CarrierIdentifier>(allowedCarriers);
             return this;
         }
@@ -370,7 +372,8 @@
          *
          * @param excludedCarriers list of excluded carriers
          */
-        public Builder setExcludedCarriers(List<CarrierIdentifier> excludedCarriers) {
+        public @NonNull Builder setExcludedCarriers(
+                @NonNull List<CarrierIdentifier> excludedCarriers) {
             mRules.mExcludedCarriers = new ArrayList<CarrierIdentifier>(excludedCarriers);
             return this;
         }
@@ -380,7 +383,7 @@
          *
          * @param carrierRestrictionDefault prioritized carrier list
          */
-        public Builder setDefaultCarrierRestriction(
+        public @NonNull Builder setDefaultCarrierRestriction(
                 @CarrierRestrictionDefault int carrierRestrictionDefault) {
             mRules.mCarrierRestrictionDefault = carrierRestrictionDefault;
             return this;
@@ -391,7 +394,7 @@
          *
          * @param multiSimPolicy multi SIM policy
          */
-        public Builder setMultiSimPolicy(@MultiSimPolicy int multiSimPolicy) {
+        public @NonNull Builder setMultiSimPolicy(@MultiSimPolicy int multiSimPolicy) {
             mRules.mMultiSimPolicy = multiSimPolicy;
             return this;
         }
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index cf2b1ea..aaf5f33 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -1566,6 +1566,7 @@
      * Returns the Type Allocation Code from the IMEI. Return null if Type Allocation Code is not
      * available.
      */
+    @Nullable
     public String getTypeAllocationCode() {
         return getTypeAllocationCode(getSlotIndex());
     }
@@ -1576,6 +1577,7 @@
      *
      * @param slotIndex of which Type Allocation Code is returned
      */
+    @Nullable
     public String getTypeAllocationCode(int slotIndex) {
         ITelephony telephony = getITelephony();
         if (telephony == null) return null;
@@ -1636,6 +1638,7 @@
      * Returns the Manufacturer Code from the MEID. Return null if Manufacturer Code is not
      * available.
      */
+    @Nullable
     public String getManufacturerCode() {
         return getManufacturerCode(getSlotIndex());
     }
@@ -1646,6 +1649,7 @@
      *
      * @param slotIndex of which Type Allocation Code is returned
      */
+    @Nullable
     public String getManufacturerCode(int slotIndex) {
         ITelephony telephony = getITelephony();
         if (telephony == null) return null;
@@ -6005,6 +6009,7 @@
      * @return IMS Service Table or null if not present or not loaded
      * @hide
      */
+    @Nullable
     @SystemApi
     @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
     public String getIsimIst() {
@@ -10367,12 +10372,6 @@
     @SuppressAutoDoc // Blocked by b/72967236 - no support for carrier privileges
     @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
     public void switchMultiSimConfig(int numOfSims) {
-        //only proceed if multi-sim is not restricted
-        if (!isMultisimSupported()) {
-            Rlog.e(TAG, "switchMultiSimConfig not possible. It is restricted or not supported.");
-            return;
-        }
-
         try {
             ITelephony telephony = getITelephony();
             if (telephony != null) {
diff --git a/telephony/java/android/telephony/data/ApnSetting.java b/telephony/java/android/telephony/data/ApnSetting.java
index a4ed775..9d072f0 100644
--- a/telephony/java/android/telephony/data/ApnSetting.java
+++ b/telephony/java/android/telephony/data/ApnSetting.java
@@ -19,7 +19,7 @@
 import android.annotation.NonNull;
 import android.content.ContentValues;
 import android.database.Cursor;
-import android.hardware.radio.V1_0.ApnTypes;
+import android.hardware.radio.V1_4.ApnTypes;
 import android.net.Uri;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -79,7 +79,7 @@
      * APN type for all APNs.
      * @hide
      */
-    public static final int TYPE_ALL = ApnTypes.ALL;
+    public static final int TYPE_ALL = ApnTypes.ALL | ApnTypes.MCX;
     /** APN type for default data traffic. */
     public static final int TYPE_DEFAULT = ApnTypes.DEFAULT | ApnTypes.HIPRI;
     /** APN type for MMS traffic. */
@@ -103,6 +103,8 @@
      * for access to carrier services in an emergency call situation.
      */
     public static final int TYPE_EMERGENCY = ApnTypes.EMERGENCY;
+    /** APN type for MCX (Mission Critical Service) where X can be PTT/Video/Data */
+    public static final int TYPE_MCX = ApnTypes.MCX;
 
     /** @hide */
     @IntDef(flag = true, prefix = { "TYPE_" }, value = {
@@ -115,7 +117,8 @@
         TYPE_IMS,
         TYPE_CBS,
         TYPE_IA,
-        TYPE_EMERGENCY
+        TYPE_EMERGENCY,
+        TYPE_MCX
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface ApnType {}
@@ -206,6 +209,7 @@
         APN_TYPE_STRING_MAP.put("cbs", TYPE_CBS);
         APN_TYPE_STRING_MAP.put("ia", TYPE_IA);
         APN_TYPE_STRING_MAP.put("emergency", TYPE_EMERGENCY);
+        APN_TYPE_STRING_MAP.put("mcx", TYPE_MCX);
         APN_TYPE_INT_MAP = new ArrayMap<Integer, String>();
         APN_TYPE_INT_MAP.put(TYPE_DEFAULT, "default");
         APN_TYPE_INT_MAP.put(TYPE_MMS, "mms");
@@ -217,6 +221,7 @@
         APN_TYPE_INT_MAP.put(TYPE_CBS, "cbs");
         APN_TYPE_INT_MAP.put(TYPE_IA, "ia");
         APN_TYPE_INT_MAP.put(TYPE_EMERGENCY, "emergency");
+        APN_TYPE_INT_MAP.put(TYPE_MCX, "mcx");
 
         PROTOCOL_STRING_MAP = new ArrayMap<String, Integer>();
         PROTOCOL_STRING_MAP.put("IP", PROTOCOL_IP);
@@ -1833,7 +1838,7 @@
          * {@link ApnSetting} built from this builder otherwise.
          */
         public ApnSetting build() {
-            if ((mApnTypeBitmask & ApnTypes.ALL) == 0 || TextUtils.isEmpty(mApnName)
+            if ((mApnTypeBitmask & TYPE_ALL) == 0 || TextUtils.isEmpty(mApnName)
                 || TextUtils.isEmpty(mEntryName)) {
                 return null;
             }
diff --git a/telephony/java/android/telephony/euicc/EuiccManager.java b/telephony/java/android/telephony/euicc/EuiccManager.java
index ad34349..afbf46d 100644
--- a/telephony/java/android/telephony/euicc/EuiccManager.java
+++ b/telephony/java/android/telephony/euicc/EuiccManager.java
@@ -17,6 +17,7 @@
 
 import android.Manifest;
 import android.annotation.IntDef;
+import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
 import android.annotation.SdkConstant;
@@ -429,6 +430,7 @@
      *
      * @return an EuiccManager that uses the given card ID for all calls.
      */
+    @NonNull
     public EuiccManager createForCardId(int cardId) {
         return new EuiccManager(mContext, cardId);
     }
diff --git a/telephony/java/android/telephony/ims/ImsCallSessionListener.java b/telephony/java/android/telephony/ims/ImsCallSessionListener.java
index 337375a..a09844d 100644
--- a/telephony/java/android/telephony/ims/ImsCallSessionListener.java
+++ b/telephony/java/android/telephony/ims/ImsCallSessionListener.java
@@ -16,6 +16,7 @@
 
 package android.telephony.ims;
 
+import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.os.RemoteException;
 import android.telephony.CallQuality;
@@ -606,7 +607,7 @@
      *
      * @param profile updated ImsStreamMediaProfile
      */
-    public void callSessionRttAudioIndicatorChanged(ImsStreamMediaProfile profile) {
+    public void callSessionRttAudioIndicatorChanged(@NonNull ImsStreamMediaProfile profile) {
         try {
             mListener.callSessionRttAudioIndicatorChanged(profile);
         } catch (RemoteException e) {
@@ -619,7 +620,7 @@
      *
      * @param callQuality The new call quality
      */
-    public void callQualityChanged(CallQuality callQuality) {
+    public void callQualityChanged(@NonNull CallQuality callQuality) {
         try {
             mListener.callQualityChanged(callQuality);
         } catch (RemoteException e) {
diff --git a/telephony/java/android/telephony/ims/ImsSsData.java b/telephony/java/android/telephony/ims/ImsSsData.java
index 10001bc..464db34 100644
--- a/telephony/java/android/telephony/ims/ImsSsData.java
+++ b/telephony/java/android/telephony/ims/ImsSsData.java
@@ -17,6 +17,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -24,6 +25,9 @@
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 
 /**
  * Provides STK Call Control Supplementary Service information.
@@ -260,13 +264,13 @@
     public final int result;
 
     private int[] mSsInfo;
-    private ImsCallForwardInfo[] mCfInfo;
-    private ImsSsInfo[] mImsSsInfo;
+    private List<ImsCallForwardInfo> mCfInfo;
+    private List<ImsSsInfo> mImsSsInfo;
 
     /**
      * Builder for optional ImsSsData parameters.
      */
-    public static class Builder {
+    public static final class Builder {
         private ImsSsData mImsSsData;
 
         /**
@@ -301,7 +305,7 @@
          * Set the array of {@link ImsSsInfo}s that are associated with this supplementary service
          * data.
          */
-        public @NonNull Builder setSuppServiceInfo(@NonNull ImsSsInfo[] imsSsInfos) {
+        public @NonNull Builder setSuppServiceInfo(@NonNull List<ImsSsInfo> imsSsInfos) {
             mImsSsData.mImsSsInfo = imsSsInfos;
             return this;
         }
@@ -311,7 +315,7 @@
          * service data.
          */
         public @NonNull Builder setCallForwardingInfo(
-                @NonNull ImsCallForwardInfo[] imsCallForwardInfos) {
+                @NonNull List<ImsCallForwardInfo> imsCallForwardInfos) {
             mImsSsData.mCfInfo = imsCallForwardInfos;
             return this;
         }
@@ -360,8 +364,8 @@
         serviceClass = in.readInt();
         result = in.readInt();
         mSsInfo = in.createIntArray();
-        mCfInfo = (ImsCallForwardInfo[])in.readParcelableArray(this.getClass().getClassLoader());
-        mImsSsInfo = (ImsSsInfo[])in.readParcelableArray(this.getClass().getClassLoader());
+        mCfInfo = in.readParcelableList(new ArrayList<>(), this.getClass().getClassLoader());
+        mImsSsInfo = in.readParcelableList(new ArrayList<>(), this.getClass().getClassLoader());
     }
 
     public static final @android.annotation.NonNull Creator<ImsSsData> CREATOR = new Creator<ImsSsData>() {
@@ -384,8 +388,8 @@
         out.writeInt(getServiceClass());
         out.writeInt(getResult());
         out.writeIntArray(mSsInfo);
-        out.writeParcelableArray(mCfInfo, 0);
-        out.writeParcelableArray(mImsSsInfo, 0);
+        out.writeParcelableList(mCfInfo, 0);
+        out.writeParcelableList(mImsSsInfo, 0);
     }
 
     @Override
@@ -500,12 +504,12 @@
 
     /** @hide */
     public void setImsSpecificSuppServiceInfo(ImsSsInfo[] imsSsInfo) {
-        mImsSsInfo = imsSsInfo;
+        mImsSsInfo = Arrays.asList(imsSsInfo);
     }
 
     /** @hide */
     public void setCallForwardingInfo(ImsCallForwardInfo[] cfInfo) {
-        mCfInfo = cfInfo;
+        mCfInfo = Arrays.asList(cfInfo);
     }
 
     /**
@@ -524,7 +528,7 @@
 
 
         int[] result = new int[2];
-        if (mImsSsInfo == null || mImsSsInfo.length == 0) {
+        if (mImsSsInfo == null || mImsSsInfo.size() == 0) {
             Rlog.e(TAG, "getSuppServiceInfoCompat: Could not parse mImsSsInfo, returning empty "
                     + "int[]");
             return result;
@@ -535,26 +539,26 @@
         if (isTypeClir()) {
             // Assume there will only be one ImsSsInfo.
             // contains {"n","m"} parameters
-            result[0] = mImsSsInfo[0].getClirOutgoingState();
-            result[1] = mImsSsInfo[0].getClirInterrogationStatus();
+            result[0] = mImsSsInfo.get(0).getClirOutgoingState();
+            result[1] = mImsSsInfo.get(0).getClirInterrogationStatus();
             return result;
         }
         // COLR 7.31
         if (isTypeColr()) {
-            result[0] = mImsSsInfo[0].getProvisionStatus();
+            result[0] = mImsSsInfo.get(0).getProvisionStatus();
         }
         // Facility Lock CLCK 7.4 (for call barring), CLIP 7.6, COLP 7.8, as well as any
         // other result, just return the status for the "n" parameter and provisioning status for
         // "m" as the default.
-        result[0] = mImsSsInfo[0].getStatus();
-        result[1] = mImsSsInfo[0].getProvisionStatus();
+        result[0] = mImsSsInfo.get(0).getStatus();
+        result[1] = mImsSsInfo.get(0).getProvisionStatus();
         return result;
     }
 
     /**
      * @return an array of {@link ImsSsInfo}s associated with this supplementary service data.
      */
-    public @NonNull ImsSsInfo[] getSuppServiceInfo() {
+    public @NonNull List<ImsSsInfo> getSuppServiceInfo() {
         return mImsSsInfo;
     }
 
@@ -562,7 +566,7 @@
      * @return an array of {@link ImsCallForwardInfo}s associated with this supplementary service
      * data.
      **/
-    public ImsCallForwardInfo[] getCallForwardInfo() {
+    public @Nullable List<ImsCallForwardInfo> getCallForwardInfo() {
         return mCfInfo;
     }
 
diff --git a/telephony/java/android/telephony/ims/ImsSsInfo.java b/telephony/java/android/telephony/ims/ImsSsInfo.java
index 303a9fe..18e7530 100644
--- a/telephony/java/android/telephony/ims/ImsSsInfo.java
+++ b/telephony/java/android/telephony/ims/ImsSsInfo.java
@@ -173,7 +173,7 @@
     /**
      * Builds {@link ImsSsInfo} instances, which may include optional parameters.
      */
-    public static class Builder {
+    public static final class Builder {
 
         private final ImsSsInfo mImsSsInfo;
 
@@ -304,7 +304,7 @@
     /**
      * @return The Incoming Communication Barring (ICB) number.
      */
-    public String getIncomingCommunicationBarringNumber() {
+    public @Nullable String getIncomingCommunicationBarringNumber() {
         return mIcbNum;
     }
 
diff --git a/telephony/java/com/android/internal/telephony/PhoneConstants.java b/telephony/java/com/android/internal/telephony/PhoneConstants.java
index e87d28c..d5061a3 100644
--- a/telephony/java/com/android/internal/telephony/PhoneConstants.java
+++ b/telephony/java/com/android/internal/telephony/PhoneConstants.java
@@ -141,6 +141,8 @@
     /** APN type for Emergency PDN. This is not an IA apn, but is used
      * for access to carrier services in an emergency call situation. */
     public static final String APN_TYPE_EMERGENCY = "emergency";
+    /** APN type for Mission Critical Services */
+    public static final String APN_TYPE_MCX = "mcx";
     /** Array of all APN types */
     public static final String[] APN_TYPES = {APN_TYPE_DEFAULT,
             APN_TYPE_MMS,
@@ -151,7 +153,8 @@
             APN_TYPE_IMS,
             APN_TYPE_CBS,
             APN_TYPE_IA,
-            APN_TYPE_EMERGENCY
+            APN_TYPE_EMERGENCY,
+            APN_TYPE_MCX
     };
 
     public static final int RIL_CARD_MAX_APPS    = 8;
diff --git a/tests/ActivityManagerPerfTests/tests/Android.mk b/tests/ActivityManagerPerfTests/tests/Android.mk
index f23a665..e1f56b8 100644
--- a/tests/ActivityManagerPerfTests/tests/Android.mk
+++ b/tests/ActivityManagerPerfTests/tests/Android.mk
@@ -21,7 +21,7 @@
     $(call all-java-files-under, src)
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test \
+    androidx.test.rules \
     apct-perftests-utils \
     ActivityManagerPerfTestsUtils
 
diff --git a/tests/ActivityManagerPerfTests/tests/AndroidManifest.xml b/tests/ActivityManagerPerfTests/tests/AndroidManifest.xml
index a1ab33a..04aef47 100644
--- a/tests/ActivityManagerPerfTests/tests/AndroidManifest.xml
+++ b/tests/ActivityManagerPerfTests/tests/AndroidManifest.xml
@@ -25,6 +25,6 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.frameworks.perftests.amtests"/>
 </manifest>
diff --git a/tests/ActivityManagerPerfTests/tests/AndroidTest.xml b/tests/ActivityManagerPerfTests/tests/AndroidTest.xml
index ffb5404..76c40b2 100644
--- a/tests/ActivityManagerPerfTests/tests/AndroidTest.xml
+++ b/tests/ActivityManagerPerfTests/tests/AndroidTest.xml
@@ -24,6 +24,6 @@
     <option name="test-tag" value="ActivityManagerPerfTests"/>
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
         <option name="package" value="com.android.frameworks.perftests.amtests"/>
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner"/>
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner"/>
     </test>
 </configuration>
\ No newline at end of file
diff --git a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BasePerfTest.java b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BasePerfTest.java
index 58fb136..daff76f 100644
--- a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BasePerfTest.java
+++ b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BasePerfTest.java
@@ -21,7 +21,8 @@
 import android.content.ServiceConnection;
 import android.perftests.utils.ManualBenchmarkState;
 import android.perftests.utils.PerfManualStatusReporter;
-import android.support.test.InstrumentationRegistry;
+
+import androidx.test.InstrumentationRegistry;
 
 import com.android.frameworks.perftests.am.util.TargetPackageUtils;
 import com.android.frameworks.perftests.am.util.TimeReceiver;
diff --git a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BroadcastPerfTest.java b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BroadcastPerfTest.java
index f7dab03..bc528d4 100644
--- a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BroadcastPerfTest.java
+++ b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/BroadcastPerfTest.java
@@ -17,8 +17,9 @@
 package com.android.frameworks.perftests.am.tests;
 
 import android.content.Intent;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.frameworks.perftests.am.util.Constants;
 
diff --git a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ContentProviderPerfTest.java b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ContentProviderPerfTest.java
index 3bf56ce..8e82219 100644
--- a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ContentProviderPerfTest.java
+++ b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ContentProviderPerfTest.java
@@ -17,8 +17,9 @@
 package com.android.frameworks.perftests.am.tests;
 
 import android.content.ContentProviderClient;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.frameworks.perftests.am.util.TargetPackageUtils;
 
diff --git a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceBindPerfTest.java b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceBindPerfTest.java
index e1263db..996c5a5 100644
--- a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceBindPerfTest.java
+++ b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceBindPerfTest.java
@@ -21,8 +21,9 @@
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.os.IBinder;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.frameworks.perftests.am.util.Constants;
 import com.android.frameworks.perftests.am.util.TargetPackageUtils;
diff --git a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceStartPerfTest.java b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceStartPerfTest.java
index f05f323..ba20640 100644
--- a/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceStartPerfTest.java
+++ b/tests/ActivityManagerPerfTests/tests/src/com/android/frameworks/perftests/am/tests/ServiceStartPerfTest.java
@@ -19,8 +19,9 @@
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.ServiceConnection;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.frameworks.perftests.am.util.Constants;
 import com.android.frameworks.perftests.am.util.TargetPackageUtils;
diff --git a/tests/ActivityManagerPerfTests/utils/Android.mk b/tests/ActivityManagerPerfTests/utils/Android.mk
index 60c9423..7a7471d 100644
--- a/tests/ActivityManagerPerfTests/utils/Android.mk
+++ b/tests/ActivityManagerPerfTests/utils/Android.mk
@@ -23,7 +23,7 @@
     src/com/android/frameworks/perftests/am/util/ITimeReceiverCallback.aidl
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test \
+    androidx.test.rules \
     junit \
     ub-uiautomator
 
diff --git a/tests/ActivityManagerPerfTests/utils/src/com/android/frameworks/perftests/am/util/Utils.java b/tests/ActivityManagerPerfTests/utils/src/com/android/frameworks/perftests/am/util/Utils.java
index 67071d2..fc787ba 100644
--- a/tests/ActivityManagerPerfTests/utils/src/com/android/frameworks/perftests/am/util/Utils.java
+++ b/tests/ActivityManagerPerfTests/utils/src/com/android/frameworks/perftests/am/util/Utils.java
@@ -19,10 +19,11 @@
 import android.content.Intent;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
-import android.support.test.InstrumentationRegistry;
 import android.support.test.uiautomator.UiDevice;
 import android.util.Log;
 
+import androidx.test.InstrumentationRegistry;
+
 import java.io.IOException;
 
 public class Utils {
diff --git a/tests/AppLaunch/Android.mk b/tests/AppLaunch/Android.mk
index 1fb548b..f50bca5 100644
--- a/tests/AppLaunch/Android.mk
+++ b/tests/AppLaunch/Android.mk
@@ -12,7 +12,7 @@
 LOCAL_CERTIFICATE := platform
 LOCAL_JAVA_LIBRARIES := android.test.base android.test.runner
 
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test
+LOCAL_STATIC_JAVA_LIBRARIES := androidx.test.rules
 
 LOCAL_COMPATIBILITY_SUITE := device-tests
 
diff --git a/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java b/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java
index 5ea8ff1..9d7319f 100644
--- a/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java
+++ b/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java
@@ -30,11 +30,12 @@
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
 import android.os.UserHandle;
-import android.support.test.rule.logging.AtraceLogger;
 import android.test.InstrumentationTestCase;
 import android.test.InstrumentationTestRunner;
 import android.util.Log;
 
+import androidx.test.rule.logging.AtraceLogger;
+
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.File;
@@ -51,6 +52,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+
 /**
  * This test is intended to measure the time it takes for the apps to start.
  * Names of the applications are passed in command line, and the
diff --git a/tests/AppLaunchWear/Android.mk b/tests/AppLaunchWear/Android.mk
index 6d08366..332b680 100644
--- a/tests/AppLaunchWear/Android.mk
+++ b/tests/AppLaunchWear/Android.mk
@@ -12,7 +12,7 @@
 LOCAL_CERTIFICATE := platform
 LOCAL_JAVA_LIBRARIES := android.test.base android.test.runner
 
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test
+LOCAL_STATIC_JAVA_LIBRARIES := androidx.test.rules
 
 LOCAL_COMPATIBILITY_SUITE := device-tests
 
diff --git a/tests/AppLaunchWear/src/com/android/tests/applaunch/AppLaunch.java b/tests/AppLaunchWear/src/com/android/tests/applaunch/AppLaunch.java
index d36d84e..97701c6 100644
--- a/tests/AppLaunchWear/src/com/android/tests/applaunch/AppLaunch.java
+++ b/tests/AppLaunchWear/src/com/android/tests/applaunch/AppLaunch.java
@@ -30,16 +30,16 @@
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
 import android.os.UserHandle;
-import android.support.test.rule.logging.AtraceLogger;
 import android.test.InstrumentationTestCase;
 import android.test.InstrumentationTestRunner;
 import android.util.Log;
 
+import androidx.test.rule.logging.AtraceLogger;
+
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -52,6 +52,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+
 /**
  * This test is intended to measure the time it takes for the apps to start.
  * Names of the applications are passed in command line, and the
diff --git a/tests/BackgroundDexOptServiceIntegrationTests/Android.mk b/tests/BackgroundDexOptServiceIntegrationTests/Android.mk
index b10305d..f47cf96 100644
--- a/tests/BackgroundDexOptServiceIntegrationTests/Android.mk
+++ b/tests/BackgroundDexOptServiceIntegrationTests/Android.mk
@@ -24,7 +24,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test \
+    androidx.test.rules \
 
 LOCAL_PACKAGE_NAME := BackgroundDexOptServiceIntegrationTests
 LOCAL_PRIVATE_PLATFORM_APIS := true
diff --git a/tests/BackgroundDexOptServiceIntegrationTests/AndroidManifest.xml b/tests/BackgroundDexOptServiceIntegrationTests/AndroidManifest.xml
index afae155..aec9f77 100644
--- a/tests/BackgroundDexOptServiceIntegrationTests/AndroidManifest.xml
+++ b/tests/BackgroundDexOptServiceIntegrationTests/AndroidManifest.xml
@@ -34,7 +34,7 @@
     </application>
 
     <instrumentation
-        android:name="android.support.test.runner.AndroidJUnitRunner"
+        android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="com.android.frameworks.bgdexopttest"
         android:label="Integration test for BackgroundDexOptService" />
 </manifest>
diff --git a/tests/BackgroundDexOptServiceIntegrationTests/AndroidTest.xml b/tests/BackgroundDexOptServiceIntegrationTests/AndroidTest.xml
index 9bb1e28..a532422 100644
--- a/tests/BackgroundDexOptServiceIntegrationTests/AndroidTest.xml
+++ b/tests/BackgroundDexOptServiceIntegrationTests/AndroidTest.xml
@@ -50,6 +50,6 @@
     <option name="test-tag" value="BackgroundDexOptServiceIntegrationTests"/>
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
         <option name="package" value="com.android.frameworks.bgdexopttest"/>
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner"/>
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner"/>
     </test>
 </configuration>
diff --git a/tests/BackgroundDexOptServiceIntegrationTests/src/com/android/server/pm/BackgroundDexOptServiceIntegrationTests.java b/tests/BackgroundDexOptServiceIntegrationTests/src/com/android/server/pm/BackgroundDexOptServiceIntegrationTests.java
index fd20f4a..7d826f7 100644
--- a/tests/BackgroundDexOptServiceIntegrationTests/src/com/android/server/pm/BackgroundDexOptServiceIntegrationTests.java
+++ b/tests/BackgroundDexOptServiceIntegrationTests/src/com/android/server/pm/BackgroundDexOptServiceIntegrationTests.java
@@ -17,17 +17,16 @@
 package com.android.server.pm;
 
 import android.app.AlarmManager;
-import android.app.UiAutomation;
 import android.content.Context;
 import android.os.Environment;
 import android.os.ParcelFileDescriptor;
 import android.os.SystemProperties;
 import android.os.storage.StorageManager;
-import android.support.test.InstrumentationRegistry;
 import android.util.Log;
 
+import androidx.test.InstrumentationRegistry;
+
 import org.junit.After;
-import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
diff --git a/tests/Camera2Tests/CameraToo/tests/Android.mk b/tests/Camera2Tests/CameraToo/tests/Android.mk
index eb8f6c3..fe4dc42 100644
--- a/tests/Camera2Tests/CameraToo/tests/Android.mk
+++ b/tests/Camera2Tests/CameraToo/tests/Android.mk
@@ -20,6 +20,6 @@
 LOCAL_INSTRUMENTATION_FOR := CameraToo
 LOCAL_SDK_VERSION := current
 LOCAL_SRC_FILES := $(call all-java-files-under,src)
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test mockito-target-minus-junit4
+LOCAL_STATIC_JAVA_LIBRARIES := androidx.test.rules mockito-target-minus-junit4
 
 include $(BUILD_PACKAGE)
diff --git a/tests/Camera2Tests/CameraToo/tests/AndroidManifest.xml b/tests/Camera2Tests/CameraToo/tests/AndroidManifest.xml
index 30210ba..8d35749 100644
--- a/tests/Camera2Tests/CameraToo/tests/AndroidManifest.xml
+++ b/tests/Camera2Tests/CameraToo/tests/AndroidManifest.xml
@@ -23,7 +23,7 @@
     <application android:label="CameraToo">
         <uses-library android:name="android.test.runner" />
     </application>
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="com.example.android.camera2.cameratoo"
         android:label="CameraToo tests" />
 </manifest>
diff --git a/tests/Compatibility/Android.mk b/tests/Compatibility/Android.mk
index 9c47a26..643f9eb 100644
--- a/tests/Compatibility/Android.mk
+++ b/tests/Compatibility/Android.mk
@@ -17,7 +17,7 @@
 
 # We only want this apk build for tests.
 LOCAL_MODULE_TAGS := tests
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test
+LOCAL_STATIC_JAVA_LIBRARIES := androidx.test.rules
 # Include all test java files.
 LOCAL_SRC_FILES := \
 	$(call all-java-files-under, src)
diff --git a/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibility.java b/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibility.java
index 95eb5c9..d683ec7 100644
--- a/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibility.java
+++ b/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibility.java
@@ -33,10 +33,11 @@
 import android.os.DropBoxManager;
 import android.os.RemoteException;
 import android.os.ServiceManager;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
 import android.util.Log;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
diff --git a/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibilityRunner.java b/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibilityRunner.java
index b61ec34..960ea49 100644
--- a/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibilityRunner.java
+++ b/tests/Compatibility/src/com/android/compatibilitytest/AppCompatibilityRunner.java
@@ -16,7 +16,7 @@
 
 package com.android.compatibilitytest;
 
-import android.support.test.runner.AndroidJUnitRunner;
+import androidx.test.runner.AndroidJUnitRunner;
 
 // empty subclass to maintain backwards compatibility on host-side harness
 public class AppCompatibilityRunner extends AndroidJUnitRunner {}
diff --git a/tests/DynamicCodeLoggerIntegrationTests/Android.mk b/tests/DynamicCodeLoggerIntegrationTests/Android.mk
index f324eb1..62c1ba8 100644
--- a/tests/DynamicCodeLoggerIntegrationTests/Android.mk
+++ b/tests/DynamicCodeLoggerIntegrationTests/Android.mk
@@ -67,7 +67,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src/com/android/server/pm)
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test \
+    androidx.test.rules \
     truth-prebuilt \
 
 # Include both versions of the .so if we have 2 arch
diff --git a/tests/DynamicCodeLoggerIntegrationTests/AndroidManifest.xml b/tests/DynamicCodeLoggerIntegrationTests/AndroidManifest.xml
index 4327da2..08fac30 100644
--- a/tests/DynamicCodeLoggerIntegrationTests/AndroidManifest.xml
+++ b/tests/DynamicCodeLoggerIntegrationTests/AndroidManifest.xml
@@ -29,7 +29,7 @@
     </application>
 
     <instrumentation
-        android:name="android.support.test.runner.AndroidJUnitRunner"
+        android:name="androidx.test.runner.AndroidJUnitRunner"
         android:targetPackage="com.android.frameworks.dynamiccodeloggertest"
         android:label="Integration test for DynamicCodeLogger" />
 </manifest>
diff --git a/tests/DynamicCodeLoggerIntegrationTests/AndroidTest.xml b/tests/DynamicCodeLoggerIntegrationTests/AndroidTest.xml
index f70b9c8..f8a1ec9 100644
--- a/tests/DynamicCodeLoggerIntegrationTests/AndroidTest.xml
+++ b/tests/DynamicCodeLoggerIntegrationTests/AndroidTest.xml
@@ -24,7 +24,7 @@
 
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
         <option name="package" value="com.android.frameworks.dynamiccodeloggertest"/>
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner"/>
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner"/>
         <option name="hidden-api-checks" value="false"/>
     </test>
 </configuration>
diff --git a/tests/DynamicCodeLoggerIntegrationTests/src/com/android/server/pm/dex/DynamicCodeLoggerIntegrationTests.java b/tests/DynamicCodeLoggerIntegrationTests/src/com/android/server/pm/dex/DynamicCodeLoggerIntegrationTests.java
index 4f9aeea..db2f659 100644
--- a/tests/DynamicCodeLoggerIntegrationTests/src/com/android/server/pm/dex/DynamicCodeLoggerIntegrationTests.java
+++ b/tests/DynamicCodeLoggerIntegrationTests/src/com/android/server/pm/dex/DynamicCodeLoggerIntegrationTests.java
@@ -24,11 +24,12 @@
 import android.os.Build;
 import android.os.ParcelFileDescriptor;
 import android.os.SystemClock;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
 import android.util.EventLog;
 import android.util.EventLog.Event;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+
 import dalvik.system.DexClassLoader;
 
 import org.junit.Before;
diff --git a/tests/FlickerTests/AndroidManifest.xml b/tests/FlickerTests/AndroidManifest.xml
index ba63940..5b1a36b 100644
--- a/tests/FlickerTests/AndroidManifest.xml
+++ b/tests/FlickerTests/AndroidManifest.xml
@@ -29,7 +29,7 @@
         <uses-library android:name="android.test.runner"/>
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.server.wm.flicker"
                      android:label="WindowManager Flicker Tests">
     </instrumentation>
diff --git a/tests/FlickerTests/lib/Android.mk b/tests/FlickerTests/lib/Android.mk
index 6a8dfe8..e438822 100644
--- a/tests/FlickerTests/lib/Android.mk
+++ b/tests/FlickerTests/lib/Android.mk
@@ -24,7 +24,7 @@
 LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 LOCAL_STATIC_JAVA_LIBRARIES := \
-   ub-janktesthelper \
+   androidx.test.janktesthelper \
    cts-amwm-util \
    platformprotosnano \
    layersprotosnano \
@@ -41,7 +41,7 @@
     src/com/android/server/wm/flicker/WindowUtils.java
 LOCAL_STATIC_JAVA_LIBRARIES := sysui-helper \
     launcher-helper-lib \
-    compatibility-device-util
+    compatibility-device-util-axt
 
 include $(BUILD_STATIC_JAVA_LIBRARY)
 
diff --git a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/AutomationUtils.java b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/AutomationUtils.java
index 6306f0e..e00a247 100644
--- a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/AutomationUtils.java
+++ b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/AutomationUtils.java
@@ -30,7 +30,6 @@
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.os.RemoteException;
-import android.support.test.InstrumentationRegistry;
 import android.support.test.launcherhelper.LauncherStrategyFactory;
 import android.support.test.uiautomator.By;
 import android.support.test.uiautomator.BySelector;
@@ -43,6 +42,8 @@
 import android.view.View;
 import android.view.ViewConfiguration;
 
+import androidx.test.InstrumentationRegistry;
+
 /**
  * Collection of UI Automation helper functions.
  */
diff --git a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/TransitionRunner.java b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/TransitionRunner.java
index f6e8192..0a3fe3c 100644
--- a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/TransitionRunner.java
+++ b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/TransitionRunner.java
@@ -18,9 +18,10 @@
 
 import android.annotation.Nullable;
 import android.support.annotation.VisibleForTesting;
-import android.support.test.InstrumentationRegistry;
 import android.util.Log;
 
+import androidx.test.InstrumentationRegistry;
+
 import com.android.server.wm.flicker.monitor.ITransitionMonitor;
 import com.android.server.wm.flicker.monitor.LayersTraceMonitor;
 import com.android.server.wm.flicker.monitor.ScreenRecorder;
diff --git a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/WindowUtils.java b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/WindowUtils.java
index 0da8761..c54396f 100644
--- a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/WindowUtils.java
+++ b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/WindowUtils.java
@@ -20,10 +20,11 @@
 import android.content.res.Resources;
 import android.graphics.Point;
 import android.graphics.Rect;
-import android.support.test.InstrumentationRegistry;
 import android.view.Surface;
 import android.view.WindowManager;
 
+import androidx.test.InstrumentationRegistry;
+
 /**
  * Helper functions to retrieve system window sizes and positions.
  */
diff --git a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitor.java b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitor.java
index 717d187..3f86f0d 100644
--- a/tests/FlickerTests/lib/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitor.java
+++ b/tests/FlickerTests/lib/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitor.java
@@ -25,7 +25,7 @@
 /**
  * Monitors {@link android.view.WindowAnimationFrameStats} to detect janky frames.
  *
- * Adapted from {@link android.support.test.jank.internal.WindowAnimationFrameStatsMonitorImpl}
+ * Adapted from {@link androidx.test.jank.internal.WindowAnimationFrameStatsMonitorImpl}
  * using the same threshold to determine jank.
  */
 public class WindowAnimationFrameStatsMonitor implements ITransitionMonitor {
diff --git a/tests/FlickerTests/lib/test/Android.mk b/tests/FlickerTests/lib/test/Android.mk
index 0e3f58d..5be89ba 100644
--- a/tests/FlickerTests/lib/test/Android.mk
+++ b/tests/FlickerTests/lib/test/Android.mk
@@ -25,7 +25,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 LOCAL_JAVA_LIBRARIES := android.test.runner
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test \
+    androidx.test.rules \
     platform-test-annotations \
     truth-prebuilt \
     platformprotosnano \
diff --git a/tests/FlickerTests/lib/test/AndroidManifest.xml b/tests/FlickerTests/lib/test/AndroidManifest.xml
index d30172d..6451a57 100644
--- a/tests/FlickerTests/lib/test/AndroidManifest.xml
+++ b/tests/FlickerTests/lib/test/AndroidManifest.xml
@@ -18,7 +18,7 @@
         <uses-library android:name="android.test.runner"/>
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.server.wm.flicker"
                      android:label="WindowManager Flicker Lib Test">
     </instrumentation>
diff --git a/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/LayersTraceTest.java b/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/LayersTraceTest.java
index 42b2aca..7d77126 100644
--- a/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/LayersTraceTest.java
+++ b/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/LayersTraceTest.java
@@ -26,9 +26,10 @@
 import android.content.Context;
 import android.graphics.Point;
 import android.graphics.Rect;
-import android.support.test.InstrumentationRegistry;
 import android.view.WindowManager;
 
+import androidx.test.InstrumentationRegistry;
+
 import org.junit.Test;
 
 import java.util.List;
diff --git a/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/TestFileUtils.java b/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/TestFileUtils.java
index 5a24e6d..c46175c 100644
--- a/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/TestFileUtils.java
+++ b/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/TestFileUtils.java
@@ -17,7 +17,8 @@
 package com.android.server.wm.flicker;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
+
+import androidx.test.InstrumentationRegistry;
 
 import com.google.common.io.ByteStreams;
 
diff --git a/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitorTest.java b/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitorTest.java
index f7fa0d5..dd6fed0 100644
--- a/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitorTest.java
+++ b/tests/FlickerTests/lib/test/src/com/android/server/wm/flicker/monitor/WindowAnimationFrameStatsMonitorTest.java
@@ -18,9 +18,7 @@
 
 import static com.android.server.wm.flicker.AutomationUtils.wakeUpAndGoToHomeScreen;
 
-import static com.google.common.truth.Truth.assertThat;
-
-import android.support.test.InstrumentationRegistry;
+import androidx.test.InstrumentationRegistry;
 
 import org.junit.Before;
 import org.junit.Ignore;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/ChangeAppRotationTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/ChangeAppRotationTest.java
index 34f4ebb..b6860cb 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/ChangeAppRotationTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/ChangeAppRotationTest.java
@@ -25,11 +25,12 @@
 import static com.android.server.wm.flicker.WmTraceSubject.assertThat;
 
 import android.graphics.Rect;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
 import android.util.Log;
 import android.view.Surface;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToAppTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToAppTest.java
index 2b62fcf..6590b86 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToAppTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToAppTest.java
@@ -20,9 +20,10 @@
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 
 import android.platform.helpers.IAppHelper;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToHomeTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToHomeTest.java
index 42b161f..4771b02 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToHomeTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/CloseImeWindowToHomeTest.java
@@ -20,9 +20,10 @@
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 
 import android.platform.helpers.IAppHelper;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/CommonTransitions.java b/tests/FlickerTests/src/com/android/server/wm/flicker/CommonTransitions.java
index 92bb1ea..65888ac 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/CommonTransitions.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/CommonTransitions.java
@@ -30,7 +30,6 @@
 import android.content.Intent;
 import android.os.RemoteException;
 import android.platform.helpers.IAppHelper;
-import android.support.test.InstrumentationRegistry;
 import android.support.test.uiautomator.By;
 import android.support.test.uiautomator.UiDevice;
 import android.support.test.uiautomator.UiObject2;
@@ -38,6 +37,8 @@
 import android.util.Rational;
 import android.view.Surface;
 
+import androidx.test.InstrumentationRegistry;
+
 import com.android.server.wm.flicker.TransitionRunner.TransitionBuilder;
 
 /**
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/DebugTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/DebugTest.java
index fec248c..61cca0d 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/DebugTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/DebugTest.java
@@ -17,12 +17,13 @@
 package com.android.server.wm.flicker;
 
 import android.platform.helpers.IAppHelper;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
 import android.support.test.uiautomator.UiDevice;
 import android.util.Rational;
 import android.view.Surface;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/FlickerTestBase.java b/tests/FlickerTests/src/com/android/server/wm/flicker/FlickerTestBase.java
index 7061b23..00e11c0 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/FlickerTestBase.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/FlickerTestBase.java
@@ -21,10 +21,11 @@
 import static com.google.common.truth.Truth.assertWithMessage;
 
 import android.platform.helpers.IAppHelper;
-import android.support.test.InstrumentationRegistry;
 import android.support.test.uiautomator.UiDevice;
 import android.util.Log;
 
+import androidx.test.InstrumentationRegistry;
+
 import com.android.server.wm.flicker.TransitionRunner.TransitionResult;
 
 import org.junit.After;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppColdTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppColdTest.java
index 7e71369..7818c4e 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppColdTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppColdTest.java
@@ -20,9 +20,9 @@
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 import static com.android.server.wm.flicker.WmTraceSubject.assertThat;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppToSplitScreenTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppToSplitScreenTest.java
index 745569a..63018ec 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppToSplitScreenTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppToSplitScreenTest.java
@@ -19,9 +19,9 @@
 import static com.android.server.wm.flicker.CommonTransitions.appToSplitScreen;
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppWarmTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppWarmTest.java
index de7639d..1aba930 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppWarmTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenAppWarmTest.java
@@ -20,9 +20,9 @@
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 import static com.android.server.wm.flicker.WmTraceSubject.assertThat;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenImeWindowTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenImeWindowTest.java
index 1bd519c..a81fa8e 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/OpenImeWindowTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/OpenImeWindowTest.java
@@ -19,8 +19,8 @@
 import static com.android.server.wm.flicker.CommonTransitions.editTextSetFocus;
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/ResizeSplitScreenTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/ResizeSplitScreenTest.java
index 8a15cbd..50dba81 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/ResizeSplitScreenTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/ResizeSplitScreenTest.java
@@ -25,11 +25,12 @@
 
 import android.graphics.Rect;
 import android.platform.helpers.IAppHelper;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
 import android.util.Rational;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/SeamlessAppRotationTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/SeamlessAppRotationTest.java
index 3eab68d..117ac5a 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/SeamlessAppRotationTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/SeamlessAppRotationTest.java
@@ -27,10 +27,11 @@
 
 import android.content.Intent;
 import android.graphics.Rect;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
 import android.view.Surface;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/FlickerTests/src/com/android/server/wm/flicker/SplitScreenToLauncherTest.java b/tests/FlickerTests/src/com/android/server/wm/flicker/SplitScreenToLauncherTest.java
index 40bd4e9..1d30df9 100644
--- a/tests/FlickerTests/src/com/android/server/wm/flicker/SplitScreenToLauncherTest.java
+++ b/tests/FlickerTests/src/com/android/server/wm/flicker/SplitScreenToLauncherTest.java
@@ -19,10 +19,10 @@
 import static com.android.server.wm.flicker.CommonTransitions.splitScreenToLauncher;
 import static com.android.server.wm.flicker.WindowUtils.getDisplayBounds;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.FlakyTest;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.FlakyTest;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Test;
diff --git a/tests/Internal/Android.mk b/tests/Internal/Android.mk
index da56696..2e26ef1 100644
--- a/tests/Internal/Android.mk
+++ b/tests/Internal/Android.mk
@@ -11,7 +11,7 @@
 
 LOCAL_JAVA_LIBRARIES := android.test.runner
 LOCAL_STATIC_JAVA_LIBRARIES := junit \
-    android-support-test \
+    androidx.test.rules \
     mockito-target-minus-junit4
 
 LOCAL_JAVA_RESOURCE_DIRS := res
diff --git a/tests/Internal/AndroidManifest.xml b/tests/Internal/AndroidManifest.xml
index e5a5694..c85c3b1 100644
--- a/tests/Internal/AndroidManifest.xml
+++ b/tests/Internal/AndroidManifest.xml
@@ -38,7 +38,7 @@
         </service>
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.internal.tests"
                      android:label="Internal Tests" />
 </manifest>
diff --git a/tests/Internal/AndroidTest.xml b/tests/Internal/AndroidTest.xml
index 6531c93..7b67e9e 100644
--- a/tests/Internal/AndroidTest.xml
+++ b/tests/Internal/AndroidTest.xml
@@ -24,6 +24,6 @@
     <option name="test-tag" value="InternalTests" />
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.internal.tests" />
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
     </test>
 </configuration>
\ No newline at end of file
diff --git a/tests/Internal/src/android/app/WallpaperColorsTest.java b/tests/Internal/src/android/app/WallpaperColorsTest.java
index 881f628..65ff6eb 100644
--- a/tests/Internal/src/android/app/WallpaperColorsTest.java
+++ b/tests/Internal/src/android/app/WallpaperColorsTest.java
@@ -20,8 +20,9 @@
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Assert;
 import org.junit.Test;
diff --git a/tests/Internal/src/android/app/WallpaperInfoTest.java b/tests/Internal/src/android/app/WallpaperInfoTest.java
index 7f06f2c..476b991 100644
--- a/tests/Internal/src/android/app/WallpaperInfoTest.java
+++ b/tests/Internal/src/android/app/WallpaperInfoTest.java
@@ -26,9 +26,10 @@
 import android.net.Uri;
 import android.os.Parcel;
 import android.service.wallpaper.WallpaperService;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java b/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java
index b9e282e..592aa3a 100644
--- a/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java
+++ b/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java
@@ -20,7 +20,7 @@
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
-import android.support.test.filters.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/Internal/src/com/android/internal/colorextraction/ColorExtractorTest.java b/tests/Internal/src/com/android/internal/colorextraction/ColorExtractorTest.java
index 39608a4..17fa931 100644
--- a/tests/Internal/src/com/android/internal/colorextraction/ColorExtractorTest.java
+++ b/tests/Internal/src/com/android/internal/colorextraction/ColorExtractorTest.java
@@ -27,9 +27,10 @@
 import android.app.WallpaperManager;
 import android.content.Context;
 import android.graphics.Color;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.internal.colorextraction.ColorExtractor.GradientColors;
 import com.android.internal.colorextraction.types.ExtractionType;
diff --git a/tests/Internal/src/com/android/internal/colorextraction/types/TonalTest.java b/tests/Internal/src/com/android/internal/colorextraction/types/TonalTest.java
index a7d5ae8..d92cfce 100644
--- a/tests/Internal/src/com/android/internal/colorextraction/types/TonalTest.java
+++ b/tests/Internal/src/com/android/internal/colorextraction/types/TonalTest.java
@@ -20,11 +20,12 @@
 
 import android.app.WallpaperColors;
 import android.graphics.Color;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
 import android.util.Range;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
 import com.android.internal.colorextraction.ColorExtractor.GradientColors;
 import com.android.internal.graphics.ColorUtils;
 
diff --git a/tests/Internal/src/com/android/internal/graphics/ColorUtilsTest.java b/tests/Internal/src/com/android/internal/graphics/ColorUtilsTest.java
index 73df9a0..d0bb8e3 100644
--- a/tests/Internal/src/com/android/internal/graphics/ColorUtilsTest.java
+++ b/tests/Internal/src/com/android/internal/graphics/ColorUtilsTest.java
@@ -16,13 +16,14 @@
 
 package com.android.internal.graphics;
 
+import static org.junit.Assert.assertTrue;
+
 import android.graphics.Color;
-import android.support.test.filters.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import org.junit.Test;
 
-import static org.junit.Assert.assertTrue;
-
 @SmallTest
 public class ColorUtilsTest {
 
diff --git a/tests/Internal/src/com/android/internal/ml/clustering/KMeansTest.java b/tests/Internal/src/com/android/internal/ml/clustering/KMeansTest.java
index a64f8a6..540a1ec 100644
--- a/tests/Internal/src/com/android/internal/ml/clustering/KMeansTest.java
+++ b/tests/Internal/src/com/android/internal/ml/clustering/KMeansTest.java
@@ -20,8 +20,9 @@
 import static org.junit.Assert.assertTrue;
 
 import android.annotation.SuppressLint;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Assert;
 import org.junit.Before;
diff --git a/tests/PackageWatchdog/Android.mk b/tests/PackageWatchdog/Android.mk
index 1c1c2a4..1e4aacc 100644
--- a/tests/PackageWatchdog/Android.mk
+++ b/tests/PackageWatchdog/Android.mk
@@ -22,7 +22,7 @@
 LOCAL_STATIC_JAVA_LIBRARIES := \
     junit \
     frameworks-base-testutils \
-    android-support-test \
+    androidx.test.rules \
     services.core
 
 LOCAL_JAVA_LIBRARIES := \
diff --git a/tests/PackageWatchdog/AndroidManifest.xml b/tests/PackageWatchdog/AndroidManifest.xml
index fa89528..540edb4 100644
--- a/tests/PackageWatchdog/AndroidManifest.xml
+++ b/tests/PackageWatchdog/AndroidManifest.xml
@@ -22,7 +22,7 @@
     </application>
 
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.tests.packagewatchdog"
                      android:label="PackageWatchdog Test"/>
 </manifest>
diff --git a/tests/PackageWatchdog/src/com/android/server/PackageWatchdogTest.java b/tests/PackageWatchdog/src/com/android/server/PackageWatchdogTest.java
index 77cd62e..598f60a 100644
--- a/tests/PackageWatchdog/src/com/android/server/PackageWatchdogTest.java
+++ b/tests/PackageWatchdog/src/com/android/server/PackageWatchdogTest.java
@@ -24,7 +24,8 @@
 
 import android.content.pm.VersionedPackage;
 import android.os.test.TestLooper;
-import android.support.test.InstrumentationRegistry;
+
+import androidx.test.InstrumentationRegistry;
 
 import com.android.server.PackageWatchdog.PackageHealthObserver;
 import com.android.server.PackageWatchdog.PackageHealthObserverImpact;
diff --git a/tests/RcsTests/Android.mk b/tests/RcsTests/Android.mk
index 7b348d7..a276584 100644
--- a/tests/RcsTests/Android.mk
+++ b/tests/RcsTests/Android.mk
@@ -11,7 +11,7 @@
 
 LOCAL_CERTIFICATE := platform
 LOCAL_JAVA_LIBRARIES := android.test.runner android.test.base
-LOCAL_STATIC_JAVA_LIBRARIES := junit android-support-test mockito-target-minus-junit4 truth-prebuilt
+LOCAL_STATIC_JAVA_LIBRARIES := junit androidx.test.rules mockito-target-minus-junit4 truth-prebuilt
 
 include $(BUILD_PACKAGE)
 
diff --git a/tests/RcsTests/AndroidManifest.xml b/tests/RcsTests/AndroidManifest.xml
index a7e7d47..b1706a0 100644
--- a/tests/RcsTests/AndroidManifest.xml
+++ b/tests/RcsTests/AndroidManifest.xml
@@ -6,6 +6,6 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.tests.rcs"/>
 </manifest>
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadIconChangedEventTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadIconChangedEventTest.java
index 89d32ab..e898942 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadIconChangedEventTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadIconChangedEventTest.java
@@ -19,10 +19,11 @@
 
 import android.net.Uri;
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsGroupThreadIconChangedEvent;
 import android.telephony.ims.RcsGroupThreadIconChangedEventDescriptor;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadNameChangedEventTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadNameChangedEventTest.java
index 726b9cd..356688d 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadNameChangedEventTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadNameChangedEventTest.java
@@ -18,10 +18,11 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsGroupThreadNameChangedEvent;
 import android.telephony.ims.RcsGroupThreadNameChangedEventDescriptor;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantJoinedEventTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantJoinedEventTest.java
index a109310..572fcb8 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantJoinedEventTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantJoinedEventTest.java
@@ -18,10 +18,11 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsGroupThreadParticipantJoinedEvent;
 import android.telephony.ims.RcsGroupThreadParticipantJoinedEventDescriptor;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantLeftEventTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantLeftEventTest.java
index de2688c..038b2e8 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantLeftEventTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsGroupThreadParticipantLeftEventTest.java
@@ -18,10 +18,11 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsGroupThreadParticipantLeftEvent;
 import android.telephony.ims.RcsGroupThreadParticipantLeftEventDescriptor;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsParticipantAliasChangedEventTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsParticipantAliasChangedEventTest.java
index 5724054..283c71b 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsParticipantAliasChangedEventTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsParticipantAliasChangedEventTest.java
@@ -18,10 +18,11 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsParticipantAliasChangedEvent;
 import android.telephony.ims.RcsParticipantAliasChangedEventDescriptor;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsParticipantQueryParamsTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsParticipantQueryParamsTest.java
index 6361a39..2d95513 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsParticipantQueryParamsTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsParticipantQueryParamsTest.java
@@ -18,9 +18,10 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsParticipantQueryParams;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RcsTests/src/com/android/tests/ims/RcsThreadQueryParamsTest.java b/tests/RcsTests/src/com/android/tests/ims/RcsThreadQueryParamsTest.java
index beb4f8a..fb51bda 100644
--- a/tests/RcsTests/src/com/android/tests/ims/RcsThreadQueryParamsTest.java
+++ b/tests/RcsTests/src/com/android/tests/ims/RcsThreadQueryParamsTest.java
@@ -21,10 +21,11 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import android.os.Parcel;
-import android.support.test.runner.AndroidJUnit4;
 import android.telephony.ims.RcsParticipant;
 import android.telephony.ims.RcsThreadQueryParams;
 
+import androidx.test.runner.AndroidJUnit4;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
diff --git a/tests/RollbackTest/Android.mk b/tests/RollbackTest/Android.mk
index db9376b..206f867 100644
--- a/tests/RollbackTest/Android.mk
+++ b/tests/RollbackTest/Android.mk
@@ -107,7 +107,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, RollbackTest/src)
 LOCAL_PACKAGE_NAME := RollbackTest
 LOCAL_MODULE_TAGS := tests
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test
+LOCAL_STATIC_JAVA_LIBRARIES := androidx.test.rules
 LOCAL_COMPATIBILITY_SUITE := general-tests
 LOCAL_JAVA_RESOURCE_FILES := \
   $(ROLLBACK_TEST_APP_AV1) \
diff --git a/tests/RollbackTest/RollbackTest.xml b/tests/RollbackTest/RollbackTest.xml
index ac39f85..70cd867 100644
--- a/tests/RollbackTest/RollbackTest.xml
+++ b/tests/RollbackTest/RollbackTest.xml
@@ -20,7 +20,7 @@
     </target_preparer>
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.tests.rollback" />
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
 
         <!-- Exclude the StagedRollbackTest tests, which needs to be specially
              driven from the StagedRollbackTest host test -->
diff --git a/tests/RollbackTest/RollbackTest/AndroidManifest.xml b/tests/RollbackTest/RollbackTest/AndroidManifest.xml
index e57a768..5380dc9 100644
--- a/tests/RollbackTest/RollbackTest/AndroidManifest.xml
+++ b/tests/RollbackTest/RollbackTest/AndroidManifest.xml
@@ -24,7 +24,7 @@
     </application>
 
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.tests.rollback"
                      android:label="Rollback Test"/>
 
diff --git a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/LocalIntentSender.java b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/LocalIntentSender.java
index ddcf1da..267ef73 100644
--- a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/LocalIntentSender.java
+++ b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/LocalIntentSender.java
@@ -21,7 +21,8 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentSender;
-import android.support.test.InstrumentationRegistry;
+
+import androidx.test.InstrumentationRegistry;
 
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
diff --git a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackBroadcastReceiver.java b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackBroadcastReceiver.java
index e10f866..8a925b9 100644
--- a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackBroadcastReceiver.java
+++ b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackBroadcastReceiver.java
@@ -20,9 +20,10 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
-import android.support.test.InstrumentationRegistry;
 import android.util.Log;
 
+import androidx.test.InstrumentationRegistry;
+
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.TimeUnit;
diff --git a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTest.java b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTest.java
index a6054e8..4780f30 100644
--- a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTest.java
+++ b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTest.java
@@ -21,6 +21,11 @@
 import static com.android.tests.rollback.RollbackTestUtils.getUniqueRollbackInfoForPackage;
 import static com.android.tests.rollback.RollbackTestUtils.processUserData;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.fail;
+
 import android.Manifest;
 import android.app.ActivityManager;
 import android.content.BroadcastReceiver;
@@ -31,13 +36,9 @@
 import android.content.rollback.RollbackInfo;
 import android.content.rollback.RollbackManager;
 import android.provider.DeviceConfig;
-import android.support.test.InstrumentationRegistry;
 import android.util.Log;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.fail;
+import androidx.test.InstrumentationRegistry;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTestUtils.java b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTestUtils.java
index 2f989f3..e8cbd60 100644
--- a/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTestUtils.java
+++ b/tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTestUtils.java
@@ -16,6 +16,11 @@
 
 package com.android.tests.rollback;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.fail;
+
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
@@ -30,13 +35,9 @@
 import android.content.rollback.RollbackManager;
 import android.os.Handler;
 import android.os.HandlerThread;
-import android.support.test.InstrumentationRegistry;
 import android.util.Log;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.fail;
+import androidx.test.InstrumentationRegistry;
 
 import java.io.IOException;
 import java.io.InputStream;
diff --git a/tests/ServiceCrashTest/Android.mk b/tests/ServiceCrashTest/Android.mk
index d1f6450..617ee7c 100644
--- a/tests/ServiceCrashTest/Android.mk
+++ b/tests/ServiceCrashTest/Android.mk
@@ -12,7 +12,7 @@
 LOCAL_CERTIFICATE := platform
 LOCAL_JAVA_LIBRARIES := android.test.base
 
-LOCAL_STATIC_JAVA_LIBRARIES := compatibility-device-util android-support-test
+LOCAL_STATIC_JAVA_LIBRARIES := compatibility-device-util-axt androidx.test.rules
 
 include $(BUILD_PACKAGE)
 
diff --git a/tests/UsageStatsPerfTests/Android.mk b/tests/UsageStatsPerfTests/Android.mk
index cd29b51..4304fb0 100644
--- a/tests/UsageStatsPerfTests/Android.mk
+++ b/tests/UsageStatsPerfTests/Android.mk
@@ -21,7 +21,7 @@
     $(call all-java-files-under, src)
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    android-support-test \
+    androidx.test.rules \
     apct-perftests-utils \
     services.usage
 
diff --git a/tests/UsageStatsPerfTests/AndroidManifest.xml b/tests/UsageStatsPerfTests/AndroidManifest.xml
index 596a79c..9891548 100644
--- a/tests/UsageStatsPerfTests/AndroidManifest.xml
+++ b/tests/UsageStatsPerfTests/AndroidManifest.xml
@@ -24,6 +24,6 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.frameworks.perftests.usage"/>
 </manifest>
diff --git a/tests/UsageStatsPerfTests/AndroidTest.xml b/tests/UsageStatsPerfTests/AndroidTest.xml
index c9b51dc..b8892eb 100644
--- a/tests/UsageStatsPerfTests/AndroidTest.xml
+++ b/tests/UsageStatsPerfTests/AndroidTest.xml
@@ -23,6 +23,6 @@
     <option name="test-tag" value="UsageStatsPerfTests"/>
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
         <option name="package" value="com.android.frameworks.perftests.usage"/>
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner"/>
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner"/>
     </test>
 </configuration>
\ No newline at end of file
diff --git a/tests/UsageStatsPerfTests/src/com/android/frameworks/perftests/usage/tests/UsageStatsDatabasePerfTest.java b/tests/UsageStatsPerfTests/src/com/android/frameworks/perftests/usage/tests/UsageStatsDatabasePerfTest.java
index e2a4c26..7d9d0d5 100644
--- a/tests/UsageStatsPerfTests/src/com/android/frameworks/perftests/usage/tests/UsageStatsDatabasePerfTest.java
+++ b/tests/UsageStatsPerfTests/src/com/android/frameworks/perftests/usage/tests/UsageStatsDatabasePerfTest.java
@@ -24,9 +24,10 @@
 import android.os.SystemClock;
 import android.perftests.utils.ManualBenchmarkState;
 import android.perftests.utils.PerfManualStatusReporter;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.LargeTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.server.usage.IntervalStats;
 import com.android.server.usage.UsageStatsDatabase;
diff --git a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java
index 0105893..adcd11a 100644
--- a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java
+++ b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java
@@ -41,6 +41,7 @@
 import android.widget.TextView;
 import android.widget.Toast;
 
+import java.time.Duration;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -196,8 +197,8 @@
                     intent.setPackage(getPackageName());
                     intent.putExtra(EXTRA_KEY_TIMEOUT, true);
                     mUsageStatsManager.registerAppUsageLimitObserver(1, packages,
-                            60, TimeUnit.SECONDS, PendingIntent.getActivity(UsageStatsActivity.this,
-                                    1, intent, 0));
+                            Duration.ofSeconds(60), Duration.ofSeconds(60),
+                            PendingIntent.getActivity(UsageStatsActivity.this, 1, intent, 0));
                 }
             }
         });
diff --git a/tests/UsbTests/Android.mk b/tests/UsbTests/Android.mk
index 4e215cc..aef993b 100644
--- a/tests/UsbTests/Android.mk
+++ b/tests/UsbTests/Android.mk
@@ -24,7 +24,7 @@
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
     frameworks-base-testutils \
-    android-support-test \
+    androidx.test.rules \
     mockito-target-inline-minus-junit4 \
     platform-test-annotations \
     services.core \
diff --git a/tests/UsbTests/AndroidManifest.xml b/tests/UsbTests/AndroidManifest.xml
index 5d60695..03d1a3e 100644
--- a/tests/UsbTests/AndroidManifest.xml
+++ b/tests/UsbTests/AndroidManifest.xml
@@ -24,7 +24,7 @@
         <uses-library android:name="android.test.runner" />
     </application>
 
-    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                      android:targetPackage="com.android.server.usb"
                      android:label="UsbTests"/>
 </manifest>
diff --git a/tests/UsbTests/AndroidTest.xml b/tests/UsbTests/AndroidTest.xml
index 4affad3..e55bc98 100644
--- a/tests/UsbTests/AndroidTest.xml
+++ b/tests/UsbTests/AndroidTest.xml
@@ -24,7 +24,7 @@
 
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
         <option name="package" value="com.android.server.usb"/>
-        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner"/>
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner"/>
         <option name="hidden-api-checks" value="false"/>
     </test>
 </configuration>
diff --git a/tests/UsbTests/src/com/android/server/usb/UsbDescriptorParserTests.java b/tests/UsbTests/src/com/android/server/usb/UsbDescriptorParserTests.java
index ea027d7..89dc79c 100644
--- a/tests/UsbTests/src/com/android/server/usb/UsbDescriptorParserTests.java
+++ b/tests/UsbTests/src/com/android/server/usb/UsbDescriptorParserTests.java
@@ -16,29 +16,29 @@
 
 package com.android.server.usb;
 
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.Resources.NotFoundException;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.server.usb.descriptors.UsbDescriptorParser;
-import com.android.server.usb.descriptors.UsbDeviceDescriptor;
-import com.google.common.io.ByteStreams;
 
-import java.io.InputStream;
-import java.io.IOException;
-import java.lang.Exception;
+import com.google.common.io.ByteStreams;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.io.IOException;
+import java.io.InputStream;
+
 /**
  * Tests for {@link com.android.server.usb.descriptors.UsbDescriptorParser}
  */
diff --git a/tests/UsbTests/src/com/android/server/usb/UsbHandlerTest.java b/tests/UsbTests/src/com/android/server/usb/UsbHandlerTest.java
index 4b93ca3..ca1eb70 100644
--- a/tests/UsbTests/src/com/android/server/usb/UsbHandlerTest.java
+++ b/tests/UsbTests/src/com/android/server/usb/UsbHandlerTest.java
@@ -31,11 +31,11 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
-import android.os.UserHandle;
 import android.provider.Settings;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.server.FgThread;
 
diff --git a/tests/WindowAnimationJank/Android.mk b/tests/WindowAnimationJank/Android.mk
index 7800a80..1c2d167 100644
--- a/tests/WindowAnimationJank/Android.mk
+++ b/tests/WindowAnimationJank/Android.mk
@@ -26,7 +26,7 @@
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
     ub-uiautomator \
-    ub-janktesthelper \
+    androidx.test.janktesthelper \
     junit
 
 LOCAL_JAVA_LIBRARIES := android.test.base.stubs
diff --git a/tests/WindowAnimationJank/src/android/windowanimationjank/FullscreenRotationTest.java b/tests/WindowAnimationJank/src/android/windowanimationjank/FullscreenRotationTest.java
index 1fb502a..6792a8b 100644
--- a/tests/WindowAnimationJank/src/android/windowanimationjank/FullscreenRotationTest.java
+++ b/tests/WindowAnimationJank/src/android/windowanimationjank/FullscreenRotationTest.java
@@ -17,8 +17,9 @@
 package android.windowanimationjank;
 
 import android.os.Bundle;
-import android.support.test.jank.JankTest;
-import android.support.test.jank.GfxMonitor;
+
+import androidx.test.jank.GfxMonitor;
+import androidx.test.jank.JankTest;
 
 /**
  * Detect janks during screen rotation for full-screen activity. Periodically change
diff --git a/tests/WindowAnimationJank/src/android/windowanimationjank/WindowAnimationJankTestBase.java b/tests/WindowAnimationJank/src/android/windowanimationjank/WindowAnimationJankTestBase.java
index bf739fa..a8ace162 100644
--- a/tests/WindowAnimationJank/src/android/windowanimationjank/WindowAnimationJankTestBase.java
+++ b/tests/WindowAnimationJank/src/android/windowanimationjank/WindowAnimationJankTestBase.java
@@ -16,12 +16,10 @@
 
 package android.windowanimationjank;
 
-import java.io.IOException;
-import java.util.StringTokenizer;
-
-import android.support.test.jank.JankTestBase;
 import android.support.test.uiautomator.UiDevice;
 
+import androidx.test.jank.JankTestBase;
+
 /**
  * This adds additional system level jank monitor and its result is merged with primary monitor
  * used in test.
diff --git a/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectableClassModel.java b/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectableClassModel.java
index 6f58893..ee97628 100644
--- a/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectableClassModel.java
+++ b/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectableClassModel.java
@@ -23,6 +23,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.Objects;
 import java.util.Optional;
 
@@ -86,20 +87,98 @@
     }
 
     /**
+     * Represents a way to access a property, either a getter or a field.
+     */
+    public static final class Accessor {
+        private final String mName;
+        private final Type mType;
+
+        /**
+         * Construct an accessor for a field.
+         *
+         * @param name The name of the field
+         * @return The new accessor
+         * @see Type#FIELD
+         */
+        static Accessor ofField(String name) {
+            return new Accessor(name, Type.FIELD);
+        }
+
+        /**
+         * Construct an accessor for a getter.
+         *
+         * @param name The name of the getter
+         * @return The new accessor
+         * @see Type#GETTER
+         */
+        static Accessor ofGetter(String name) {
+            return new Accessor(name, Type.GETTER);
+        }
+
+        public Accessor(String name, Type type) {
+            mName = Objects.requireNonNull(name, "Accessor name must not be null");
+            mType = Objects.requireNonNull(type, "Accessor type must not be null");
+        }
+
+        public String getName() {
+            return mName;
+        }
+
+        public Type getType() {
+            return mType;
+        }
+
+        /**
+         * Get the invocation of this accessor.
+         *
+         * Example: {@code "getValue()"} for a getter or {@code "valueField"} for a field.
+         *
+         * @return A string representing the invocation of this accessor
+         */
+        public String invocation() {
+            switch (mType) {
+                case FIELD:
+                    return mName;
+                case GETTER:
+                    return String.format("%s()", mName);
+                default:
+                    throw new NoSuchElementException(
+                            String.format("No such accessor type %s", mType));
+            }
+        }
+
+        public enum Type {
+            /**
+             * A property accessed by a public field.
+             *
+             * @see #ofField(String)
+             */
+            FIELD,
+
+            /**
+             * A property accessed by a public getter method.
+             *
+             * @see #ofGetter(String)
+             */
+            GETTER
+        }
+    }
+
+    /**
      * Model an inspectable property
      */
     public static final class Property {
         private final String mName;
-        private final String mGetter;
+        private final Accessor mAccessor;
         private final Type mType;
         private boolean mAttributeIdInferrableFromR = true;
         private int mAttributeId = 0;
         private List<IntEnumEntry> mIntEnumEntries;
         private List<IntFlagEntry> mIntFlagEntries;
 
-        public Property(String name, String getter, Type type) {
+        public Property(String name, Accessor accessor, Type type) {
             mName = Objects.requireNonNull(name, "Name must not be null");
-            mGetter = Objects.requireNonNull(getter, "Getter must not be null");
+            mAccessor = Objects.requireNonNull(accessor, "Accessor must not be null");
             mType = Objects.requireNonNull(type, "Type must not be null");
         }
 
@@ -129,8 +208,8 @@
             return mName;
         }
 
-        public String getGetter() {
-            return mGetter;
+        public Accessor getAccessor() {
+            return mAccessor;
         }
 
         public Type getType() {
diff --git a/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectablePropertyProcessor.java b/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectablePropertyProcessor.java
index 50c79da..6305228 100644
--- a/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectablePropertyProcessor.java
+++ b/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectablePropertyProcessor.java
@@ -16,6 +16,7 @@
 
 package android.processor.view.inspector;
 
+import android.processor.view.inspector.InspectableClassModel.Accessor;
 import android.processor.view.inspector.InspectableClassModel.IntEnumEntry;
 import android.processor.view.inspector.InspectableClassModel.IntFlagEntry;
 import android.processor.view.inspector.InspectableClassModel.Property;
@@ -93,16 +94,15 @@
         try {
             final AnnotationMirror annotation =
                     mAnnotationUtils.exactlyOneMirror(mQualifiedName, element);
-            final ExecutableElement getter = ensureGetter(element);
-            final Property property = buildProperty(getter, annotation);
+            final Property property = buildProperty(element, annotation);
 
             model.getProperty(property.getName()).ifPresent(p -> {
                 throw new ProcessingException(
                         String.format(
-                                "Property \"%s\" is already defined on #%s().",
+                                "Property \"%s\" is already defined on #%s.",
                                 p.getName(),
-                                p.getGetter()),
-                        getter,
+                                p.getAccessor().invocation()),
+                        element,
                         annotation);
             });
 
@@ -112,6 +112,95 @@
         }
     }
 
+
+    /**
+     * Build a {@link Property} from a getter and an inspectable property annotation.
+     *
+     * @param accessor An element representing the getter or public field to build from
+     * @param annotation A mirror of an inspectable property-shaped annotation
+     * @return A property for the getter and annotation
+     * @throws ProcessingException If the supplied data is invalid and a property cannot be modeled
+     */
+    private Property buildProperty(Element accessor, AnnotationMirror annotation) {
+        final Property property;
+        final Optional<String> nameFromAnnotation = mAnnotationUtils
+                .typedValueByName("name", String.class, accessor, annotation);
+
+        validateModifiers(accessor);
+
+        switch (accessor.getKind()) {
+            case FIELD:
+                property = new Property(
+                        nameFromAnnotation.orElseGet(() -> accessor.getSimpleName().toString()),
+                        Accessor.ofField(accessor.getSimpleName().toString()),
+                        determinePropertyType(accessor, annotation));
+                break;
+            case METHOD:
+                final ExecutableElement getter = ensureGetter(accessor);
+
+                property = new Property(
+                        nameFromAnnotation.orElseGet(() -> inferPropertyNameFromGetter(getter)),
+                        Accessor.ofGetter(getter.getSimpleName().toString()),
+                        determinePropertyType(getter, annotation));
+                break;
+            default:
+                throw new ProcessingException(
+                        String.format(
+                                "Property must either be a getter method or a field, got %s.",
+                                accessor.getKind()
+                        ),
+                        accessor,
+                        annotation);
+        }
+
+        mAnnotationUtils
+                .typedValueByName("hasAttributeId", Boolean.class, accessor, annotation)
+                .ifPresent(property::setAttributeIdInferrableFromR);
+
+        mAnnotationUtils
+                .typedValueByName("attributeId", Integer.class, accessor, annotation)
+                .ifPresent(property::setAttributeId);
+
+        switch (property.getType()) {
+            case INT_ENUM:
+                property.setIntEnumEntries(processEnumMapping(accessor, annotation));
+                break;
+            case INT_FLAG:
+                property.setIntFlagEntries(processFlagMapping(accessor, annotation));
+                break;
+        }
+
+        return property;
+    }
+
+    /**
+     * Validates that an element is public, concrete, and non-static.
+     *
+     * @param element The element to check
+     * @throws ProcessingException If the element's modifiers are invalid
+     */
+    private void validateModifiers(Element element) {
+        final Set<Modifier> modifiers = element.getModifiers();
+
+        if (!modifiers.contains(Modifier.PUBLIC)) {
+            throw new ProcessingException(
+                    "Property getter methods and fields must be public.",
+                    element);
+        }
+
+        if (modifiers.contains(Modifier.ABSTRACT)) {
+            throw new ProcessingException(
+                    "Property getter methods must not be abstract.",
+                    element);
+        }
+
+        if (modifiers.contains(Modifier.STATIC)) {
+            throw new ProcessingException(
+                    "Property getter methods and fields must not be static.",
+                    element);
+        }
+    }
+
     /**
      * Check that an element is shaped like a getter.
      *
@@ -127,25 +216,7 @@
         }
 
         final ExecutableElement method = (ExecutableElement) element;
-        final Set<Modifier> modifiers = method.getModifiers();
 
-        if (modifiers.contains(Modifier.PRIVATE)) {
-            throw new ProcessingException(
-                    "Property getter methods must not be private.",
-                    element);
-        }
-
-        if (modifiers.contains(Modifier.ABSTRACT)) {
-            throw new ProcessingException(
-                    "Property getter methods must not be abstract.",
-                    element);
-        }
-
-        if (modifiers.contains(Modifier.STATIC)) {
-            throw new ProcessingException(
-                    "Property getter methods must not be static.",
-                    element);
-        }
 
         if (!method.getParameters().isEmpty()) {
             throw new ProcessingException(
@@ -171,77 +242,41 @@
         return method;
     }
 
-    /**
-     * Build a {@link Property} from a getter and an inspectable property annotation.
-     *
-     * @param getter     An element representing the getter to build from
-     * @param annotation A mirror of an inspectable property-shaped annotation
-     * @return A property for the getter and annotation
-     * @throws ProcessingException If the supplied data is invalid and a property cannot be modeled
-     */
-    private Property buildProperty(ExecutableElement getter, AnnotationMirror annotation) {
-        final String name = mAnnotationUtils
-                .typedValueByName("name", String.class, getter, annotation)
-                .orElseGet(() -> inferPropertyNameFromGetter(getter));
-
-        final Property property = new Property(
-                name,
-                getter.getSimpleName().toString(),
-                determinePropertyType(getter, annotation));
-
-        mAnnotationUtils
-                .typedValueByName("hasAttributeId", Boolean.class, getter, annotation)
-                .ifPresent(property::setAttributeIdInferrableFromR);
-
-        mAnnotationUtils
-                .typedValueByName("attributeId", Integer.class, getter, annotation)
-                .ifPresent(property::setAttributeId);
-
-        switch (property.getType()) {
-            case INT_ENUM:
-                property.setIntEnumEntries(processEnumMapping(getter, annotation));
-                break;
-            case INT_FLAG:
-                property.setIntFlagEntries(processFlagMapping(getter, annotation));
-                break;
-        }
-
-        return property;
-    }
 
     /**
      * Determine the property type from the annotation, return type, or context clues.
      *
-     * @param getter     An element representing the getter to build from
+     * @param accessor An element representing the getter or field to determine the type of
      * @param annotation A mirror of an inspectable property-shaped annotation
      * @return The resolved property type
      * @throws ProcessingException If the property type cannot be resolved or is invalid
      * @see android.view.inspector.InspectableProperty#valueType()
      */
     private Property.Type determinePropertyType(
-            ExecutableElement getter,
+            Element accessor,
             AnnotationMirror annotation) {
 
         final String valueType = mAnnotationUtils
-                .untypedValueByName("valueType", getter, annotation)
+                .untypedValueByName("valueType", accessor, annotation)
                 .map(Object::toString)
                 .orElse("INFERRED");
 
-        final Property.Type returnType = convertReturnTypeToPropertyType(getter);
+        final Property.Type accessorType =
+                convertTypeMirrorToPropertyType(extractReturnOrFieldType(accessor), accessor);
 
-        final boolean hasColor = hasColorAnnotation(getter);
+        final boolean hasColor = hasColorAnnotation(accessor);
         final Optional<AnnotationValue> enumMapping =
                 mAnnotationUtils.valueByName("enumMapping", annotation);
         final Optional<AnnotationValue> flagMapping =
                 mAnnotationUtils.valueByName("flagMapping", annotation);
 
-        if (returnType != Property.Type.INT) {
+        if (accessorType != Property.Type.INT) {
             enumMapping.ifPresent(value -> {
                 throw new ProcessingException(
                         String.format(
                                 "Can only use enumMapping on int types, got %s.",
-                                returnType.toString().toLowerCase()),
-                        getter,
+                                accessorType.toString().toLowerCase()),
+                        accessor,
                         annotation,
                         value);
             });
@@ -249,8 +284,8 @@
                 throw new ProcessingException(
                         String.format(
                                 "Can only use flagMapping on int types, got %s.",
-                                returnType.toString().toLowerCase()),
-                        getter,
+                                accessorType.toString().toLowerCase()),
+                        accessor,
                         annotation,
                         value);
             });
@@ -262,14 +297,14 @@
                     enumMapping.ifPresent(value -> {
                         throw new ProcessingException(
                                 "Cannot use enumMapping on a color type.",
-                                getter,
+                                accessor,
                                 annotation,
                                 value);
                     });
                     flagMapping.ifPresent(value -> {
                         throw new ProcessingException(
                                 "Cannot use flagMapping on a color type.",
-                                getter,
+                                accessor,
                                 annotation,
                                 value);
                     });
@@ -278,7 +313,7 @@
                     flagMapping.ifPresent(value -> {
                         throw new ProcessingException(
                                 "Cannot use flagMapping and enumMapping simultaneously.",
-                                getter,
+                                accessor,
                                 annotation,
                                 value);
                     });
@@ -286,12 +321,12 @@
                 } else if (flagMapping.isPresent()) {
                     return Property.Type.INT_FLAG;
                 } else {
-                    return returnType;
+                    return accessorType;
                 }
             case "NONE":
-                return returnType;
+                return accessorType;
             case "COLOR":
-                switch (returnType) {
+                switch (accessorType) {
                     case COLOR:
                     case INT:
                     case LONG:
@@ -299,37 +334,58 @@
                     default:
                         throw new ProcessingException(
                                 "Color must be a long, integer, or android.graphics.Color",
-                                getter,
+                                accessor,
                                 annotation);
                 }
             case "GRAVITY":
-                requirePackedIntToReturnInt("Gravity", returnType, getter, annotation);
+                requirePackedIntToBeInt("Gravity", accessorType, accessor, annotation);
                 return Property.Type.GRAVITY;
             case "INT_ENUM":
-                requirePackedIntToReturnInt("IntEnum", returnType, getter, annotation);
+                requirePackedIntToBeInt("IntEnum", accessorType, accessor, annotation);
                 return Property.Type.INT_ENUM;
             case "INT_FLAG":
-                requirePackedIntToReturnInt("IntFlag", returnType, getter, annotation);
+                requirePackedIntToBeInt("IntFlag", accessorType, accessor, annotation);
                 return Property.Type.INT_FLAG;
             default:
                 throw new ProcessingException(
                         String.format("Unknown value type enumeration value: %s", valueType),
-                        getter,
+                        accessor,
                         annotation);
         }
     }
 
     /**
-     * Get a property type from the return type of a getter.
+     * Get the type of a field or the return type of a method.
      *
-     * @param getter The getter to extract the return type of
+     * @param element The element to extract a {@link TypeMirror} from
+     * @return The return or field type of the element
+     * @throws ProcessingException If the element is not a field or a method
+     */
+    private TypeMirror extractReturnOrFieldType(Element element) {
+        switch (element.getKind()) {
+            case FIELD:
+                return element.asType();
+            case METHOD:
+                return ((ExecutableElement) element).getReturnType();
+            default:
+                throw new ProcessingException(
+                        String.format(
+                                "Unable to determine the type of a %s.",
+                                element.getKind()),
+                        element);
+        }
+    }
+
+    /**
+     * Get a property type from a type mirror
+     *
+     * @param typeMirror The type mirror to convert to a property type
+     * @param element The element to be used for exceptions
      * @return The property type returned by the getter
      * @throws ProcessingException If the return type is not a primitive or an object
      */
-    private Property.Type convertReturnTypeToPropertyType(ExecutableElement getter) {
-        final TypeMirror returnType = getter.getReturnType();
-
-        switch (unboxType(returnType)) {
+    private Property.Type convertTypeMirrorToPropertyType(TypeMirror typeMirror, Element element) {
+        switch (unboxType(typeMirror)) {
             case BOOLEAN:
                 return Property.Type.BOOLEAN;
             case BYTE:
@@ -347,7 +403,7 @@
             case SHORT:
                 return Property.Type.SHORT;
             case DECLARED:
-                if (isColorType(returnType)) {
+                if (isColorType(typeMirror)) {
                     return Property.Type.COLOR;
                 } else {
                     return Property.Type.OBJECT;
@@ -356,24 +412,24 @@
                 return Property.Type.OBJECT;
             default:
                 throw new ProcessingException(
-                        String.format("Unsupported return type %s.", returnType),
-                        getter);
+                        String.format("Unsupported property type %s.", typeMirror),
+                        element);
         }
     }
 
     /**
      * Require that a value type packed into an integer be on a getter that returns an int.
      *
-     * @param typeName   The name of the type to use in the exception
+     * @param typeName The name of the type to use in the exception
      * @param returnType The return type of the getter to check
-     * @param getter     The getter, to use in the exception
+     * @param accessor The getter, to use in the exception
      * @param annotation The annotation, to use in the exception
      * @throws ProcessingException If the return type is not an int
      */
-    private static void requirePackedIntToReturnInt(
+    private static void requirePackedIntToBeInt(
             String typeName,
             Property.Type returnType,
-            ExecutableElement getter,
+            Element accessor,
             AnnotationMirror annotation) {
         if (returnType != Property.Type.INT) {
             throw new ProcessingException(
@@ -381,7 +437,7 @@
                             "%s can only be defined on a method that returns int, got %s.",
                             typeName,
                             returnType.toString().toLowerCase()),
-                    getter,
+                    accessor,
                     annotation);
         }
     }
@@ -393,21 +449,21 @@
      * not considered to be annotated, nor is a {@code long} annotated with
      * {@link android.annotation.ColorInt}.
      *
-     * @param getter The getter to query
+     * @param accessor The getter or field to query
      * @return True if the getter has a color annotation, false otherwise
      */
-    private boolean hasColorAnnotation(ExecutableElement getter) {
-        switch (unboxType(getter.getReturnType())) {
+    private boolean hasColorAnnotation(Element accessor) {
+        switch (unboxType(extractReturnOrFieldType(accessor))) {
             case INT:
                 for (String name : COLOR_INT_ANNOTATION_NAMES) {
-                    if (mAnnotationUtils.hasAnnotation(getter, name)) {
+                    if (mAnnotationUtils.hasAnnotation(accessor, name)) {
                         return true;
                     }
                 }
                 return false;
             case LONG:
                 for (String name : COLOR_LONG_ANNOTATION_NAMES) {
-                    if (mAnnotationUtils.hasAnnotation(getter, name)) {
+                    if (mAnnotationUtils.hasAnnotation(accessor, name)) {
                         return true;
                     }
                 }
@@ -452,40 +508,40 @@
      *
      * @see android.view.inspector.IntEnumMapping
      * @see android.view.inspector.InspectableProperty#enumMapping()
-     * @param getter The getter of the property, used for exceptions
+     * @param accessor The accessor of the property, used for exceptions
      * @param annotation The {@link android.view.inspector.InspectableProperty} annotation to
      *                   extract enum mapping values from.
      * @return A list of int enum entries, in the order specified in source
      * @throws ProcessingException if mapping doesn't exist or is invalid
      */
     private List<IntEnumEntry> processEnumMapping(
-            ExecutableElement getter,
+            Element accessor,
             AnnotationMirror annotation) {
         List<AnnotationMirror> enumAnnotations = mAnnotationUtils.typedArrayValuesByName(
-                "enumMapping", AnnotationMirror.class, getter, annotation);
+                "enumMapping", AnnotationMirror.class, accessor, annotation);
         List<IntEnumEntry> enumEntries = new ArrayList<>(enumAnnotations.size());
 
         if (enumAnnotations.isEmpty()) {
             throw new ProcessingException(
-                    "Encountered an empty array for enumMapping", getter, annotation);
+                    "Encountered an empty array for enumMapping", accessor, annotation);
         }
 
         for (AnnotationMirror enumAnnotation : enumAnnotations) {
             final String name = mAnnotationUtils.typedValueByName(
-                    "name", String.class, getter, enumAnnotation)
+                    "name", String.class, accessor, enumAnnotation)
                     .orElseThrow(() -> {
                         throw new ProcessingException(
                                 "Name is required for @EnumMap",
-                                getter,
+                                accessor,
                                 enumAnnotation);
                     });
 
             final int value = mAnnotationUtils.typedValueByName(
-                    "value", Integer.class, getter, enumAnnotation)
+                    "value", Integer.class, accessor, enumAnnotation)
                     .orElseThrow(() -> {
                         throw new ProcessingException(
                                 "Value is required for @EnumMap",
-                                getter,
+                                accessor,
                                 enumAnnotation);
                     });
 
@@ -504,45 +560,45 @@
      *
      * @see android.view.inspector.IntFlagMapping
      * @see android.view.inspector.InspectableProperty#flagMapping()
-     * @param getter The getter of the property, used for exceptions
+     * @param accessor The accessor of the property, used for exceptions
      * @param annotation The {@link android.view.inspector.InspectableProperty} annotation to
      *                   extract flag mapping values from.
      * @return A list of int flags entries, in the order specified in source
      * @throws ProcessingException if mapping doesn't exist or is invalid
      */
     private List<IntFlagEntry> processFlagMapping(
-            ExecutableElement getter,
+            Element accessor,
             AnnotationMirror annotation) {
         List<AnnotationMirror> flagAnnotations = mAnnotationUtils.typedArrayValuesByName(
-                "flagMapping", AnnotationMirror.class, getter, annotation);
+                "flagMapping", AnnotationMirror.class, accessor, annotation);
         List<IntFlagEntry> flagEntries = new ArrayList<>(flagAnnotations.size());
 
         if (flagAnnotations.isEmpty()) {
             throw new ProcessingException(
-                    "Encountered an empty array for flagMapping", getter, annotation);
+                    "Encountered an empty array for flagMapping", accessor, annotation);
         }
 
         for (AnnotationMirror flagAnnotation : flagAnnotations) {
             final String name = mAnnotationUtils.typedValueByName(
-                    "name", String.class, getter, flagAnnotation)
+                    "name", String.class, accessor, flagAnnotation)
                     .orElseThrow(() -> {
                         throw new ProcessingException(
                                 "Name is required for @FlagMap",
-                                getter,
+                                accessor,
                                 flagAnnotation);
                     });
 
             final int target = mAnnotationUtils.typedValueByName(
-                    "target", Integer.class, getter, flagAnnotation)
+                    "target", Integer.class, accessor, flagAnnotation)
                     .orElseThrow(() -> {
                         throw new ProcessingException(
                                 "Target is required for @FlagMap",
-                                getter,
+                                accessor,
                                 flagAnnotation);
                     });
 
             final Optional<Integer> mask = mAnnotationUtils.typedValueByName(
-                    "mask", Integer.class, getter, flagAnnotation);
+                    "mask", Integer.class, accessor, flagAnnotation);
 
             if (mask.isPresent()) {
                 flagEntries.add(new IntFlagEntry(name, target, mask.get()));
diff --git a/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectionCompanionGenerator.java b/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectionCompanionGenerator.java
index 7b04645..1ab9914 100644
--- a/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectionCompanionGenerator.java
+++ b/tools/processors/view_inspector/src/java/android/processor/view/inspector/InspectionCompanionGenerator.java
@@ -16,6 +16,7 @@
 
 package android.processor.view.inspector;
 
+
 import android.processor.view.inspector.InspectableClassModel.IntEnumEntry;
 import android.processor.view.inspector.InspectableClassModel.IntFlagEntry;
 import android.processor.view.inspector.InspectableClassModel.Property;
@@ -268,10 +269,10 @@
 
         for (PropertyIdField propertyIdField : propertyIdFields) {
             builder.addStatement(
-                    "propertyReader.read$L($N, node.$L())",
+                    "propertyReader.read$L($N, node.$L)",
                     methodSuffixForPropertyType(propertyIdField.mProperty.getType()),
                     propertyIdField.mFieldSpec,
-                    propertyIdField.mProperty.getGetter());
+                    propertyIdField.mProperty.getAccessor().invocation());
         }
 
         return builder.build();
diff --git a/tools/processors/view_inspector/test/java/android/processor/view/inspector/InspectionCompanionGeneratorTest.java b/tools/processors/view_inspector/test/java/android/processor/view/inspector/InspectionCompanionGeneratorTest.java
index f6d8bb0..35f0fcf 100644
--- a/tools/processors/view_inspector/test/java/android/processor/view/inspector/InspectionCompanionGeneratorTest.java
+++ b/tools/processors/view_inspector/test/java/android/processor/view/inspector/InspectionCompanionGeneratorTest.java
@@ -20,6 +20,8 @@
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.fail;
 
+
+import android.processor.view.inspector.InspectableClassModel.Accessor;
 import android.processor.view.inspector.InspectableClassModel.IntEnumEntry;
 import android.processor.view.inspector.InspectableClassModel.IntFlagEntry;
 import android.processor.view.inspector.InspectableClassModel.Property;
@@ -86,7 +88,7 @@
 
     @Test
     public void testNoAttributeId() {
-        final Property property = new Property(
+        final Property property = addProperty(
                 "noAttributeProperty",
                 "getNoAttributeProperty",
                 Property.Type.INT);
@@ -98,19 +100,18 @@
 
     @Test
     public void testSuppliedAttributeId() {
-        final Property property = new Property(
+        final Property property = addProperty(
                 "suppliedAttributeProperty",
                 "getSuppliedAttributeProperty",
                 Property.Type.INT);
         property.setAttributeId(0xdecafbad);
-        mModel.putProperty(property);
 
         assertGeneratedFileEquals("SuppliedAttributeId");
     }
 
     @Test
     public void testIntEnum() {
-        final Property property = new Property(
+        final Property property = addProperty(
                 "intEnumProperty",
                 "getIntEnumProperty",
                 Property.Type.INT_ENUM);
@@ -127,7 +128,7 @@
 
     @Test
     public void testIntFlag() {
-        final Property property = new Property(
+        final Property property = addProperty(
                 "intFlag",
                 "getIntFlag",
                 Property.Type.INT_FLAG);
@@ -139,13 +140,21 @@
                 new IntFlagEntry("WARP", 0x4)
         ));
 
-        mModel.putProperty(property);
-
         assertGeneratedFileEquals("IntFlag");
     }
 
+    @Test
+    public void testFieldProperty() {
+        mModel.putProperty(new Property(
+                "fieldProperty",
+                Accessor.ofField("fieldProperty"),
+                Property.Type.INT));
+
+        assertGeneratedFileEquals("FieldProperty");
+    }
+
     private Property addProperty(String name, String getter, Property.Type type) {
-        final Property property = new Property(name, getter, type);
+        final Property property = new Property(name, Accessor.ofGetter(getter), type);
         mModel.putProperty(property);
         return property;
     }
diff --git a/tools/processors/view_inspector/test/resources/android/processor/view/inspector/InspectionCompanionGeneratorTest/FieldProperty.java.txt b/tools/processors/view_inspector/test/resources/android/processor/view/inspector/InspectionCompanionGeneratorTest/FieldProperty.java.txt
new file mode 100644
index 0000000..a44c43e
--- /dev/null
+++ b/tools/processors/view_inspector/test/resources/android/processor/view/inspector/InspectionCompanionGeneratorTest/FieldProperty.java.txt
@@ -0,0 +1,39 @@
+package com.android.node;
+
+import android.R;
+import android.view.inspector.InspectionCompanion;
+import android.view.inspector.PropertyMapper;
+import android.view.inspector.PropertyReader;
+import java.lang.Override;
+
+/**
+ * Inspection companion for {@link TestNode}.
+ *
+ * Generated by {@link android.processor.view.inspector.InspectionCompanionGenerator}
+ * on behalf of {@link android.processor.view.inspector.InspectionCompanionGeneratorTest}.
+ */
+public final class TestNode$$InspectionCompanion implements InspectionCompanion<TestNode> {
+    /**
+     * Set by {@link #mapProperties(PropertyMapper)} once properties have been mapped.
+     */
+    private boolean mPropertiesMapped = false;
+
+    /**
+     * Property ID of {@code fieldProperty}.
+     */
+    private int mFieldPropertyId;
+
+    @Override
+    public void mapProperties(PropertyMapper propertyMapper) {
+        mFieldPropertyId = propertyMapper.mapInt("fieldProperty", R.attr.fieldProperty);
+        mPropertiesMapped = true;
+    }
+
+    @Override
+    public void readProperties(TestNode node, PropertyReader propertyReader) {
+        if (!mPropertiesMapped) {
+            throw new InspectionCompanion.UninitializedPropertyMapException();
+        }
+        propertyReader.readInt(mFieldPropertyId, node.fieldProperty);
+    }
+}