diff --git a/core/java/android/annotation/BroadcastBehavior.java b/core/java/android/annotation/BroadcastBehavior.java
index 9b2ca31..70d82cb 100644
--- a/core/java/android/annotation/BroadcastBehavior.java
+++ b/core/java/android/annotation/BroadcastBehavior.java
@@ -53,4 +53,9 @@
      * @see Intent#FLAG_RECEIVER_INCLUDE_BACKGROUND
      */
     boolean includeBackground() default false;
+
+    /**
+     * This broadcast is protected and can only be sent by the OS.
+     */
+    boolean protectedBroadcast() default false;
 }
diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 1b972f7..e4d2d13 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -5844,7 +5844,7 @@
      * @return Returns the single SharedPreferences instance that can be used
      *         to retrieve and modify the preference values.
      */
-    public SharedPreferences getPreferences(int mode) {
+    public SharedPreferences getPreferences(@Context.PreferencesMode int mode) {
         return getSharedPreferences(getLocalClassName(), mode);
     }
 
diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index 62f2144..1ab45b5 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -2350,6 +2350,14 @@
         }
     }
 
+    /** @hide */
+    @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = {
+            MOVE_TASK_WITH_HOME,
+            MOVE_TASK_NO_USER_ACTION,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface MoveTaskFlags {}
+
     /**
      * Flag for {@link #moveTaskToFront(int, int)}: also move the "home"
      * activity along with the task, so it is positioned immediately behind
@@ -2370,28 +2378,26 @@
      *
      * @param taskId The identifier of the task to be moved, as found in
      * {@link RunningTaskInfo} or {@link RecentTaskInfo}.
-     * @param flags Additional operational flags, 0 or more of
-     * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}.
+     * @param flags Additional operational flags.
      */
-    public void moveTaskToFront(int taskId, int flags) {
+    @RequiresPermission(android.Manifest.permission.REORDER_TASKS)
+    public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) {
         moveTaskToFront(taskId, flags, null);
     }
 
     /**
      * Ask that the task associated with a given task ID be moved to the
-     * front of the stack, so it is now visible to the user.  Requires that
-     * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS}
-     * or a SecurityException will be thrown.
+     * front of the stack, so it is now visible to the user.
      *
      * @param taskId The identifier of the task to be moved, as found in
      * {@link RunningTaskInfo} or {@link RecentTaskInfo}.
-     * @param flags Additional operational flags, 0 or more of
-     * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}.
+     * @param flags Additional operational flags.
      * @param options Additional options for the operation, either null or
      * as per {@link Context#startActivity(Intent, android.os.Bundle)
      * Context.startActivity(Intent, Bundle)}.
      */
-    public void moveTaskToFront(int taskId, int flags, Bundle options) {
+    @RequiresPermission(android.Manifest.permission.REORDER_TASKS)
+    public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) {
         try {
             getService().moveTaskToFront(taskId, flags, options);
         } catch (RemoteException e) {
@@ -3637,13 +3643,10 @@
      * processes to reclaim memory; the system will take care of restarting
      * these processes in the future as needed.
      *
-     * <p>You must hold the permission
-     * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to
-     * call this method.
-     *
      * @param packageName The name of the package whose processes are to
      * be killed.
      */
+    @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES)
     public void killBackgroundProcesses(String packageName) {
         try {
             getService().killBackgroundProcesses(packageName,
@@ -4015,13 +4018,13 @@
      * Perform a system dump of various state associated with the given application
      * package name.  This call blocks while the dump is being performed, so should
      * not be done on a UI thread.  The data will be written to the given file
-     * descriptor as text.  An application must hold the
-     * {@link android.Manifest.permission#DUMP} permission to make this call.
+     * descriptor as text.
      * @param fd The file descriptor that the dump should be written to.  The file
      * descriptor is <em>not</em> closed by this function; the caller continues to
      * own it.
      * @param packageName The name of the package that is to be dumped.
      */
+    @RequiresPermission(Manifest.permission.DUMP)
     public void dumpPackageState(FileDescriptor fd, String packageName) {
         dumpPackageStateStatic(fd, packageName);
     }
diff --git a/core/java/android/app/AlarmManager.java b/core/java/android/app/AlarmManager.java
index c561a19..3221c5d 100644
--- a/core/java/android/app/AlarmManager.java
+++ b/core/java/android/app/AlarmManager.java
@@ -16,6 +16,7 @@
 
 package android.app;
 
+import android.annotation.IntDef;
 import android.annotation.SdkConstant;
 import android.annotation.SystemApi;
 import android.content.Context;
@@ -34,6 +35,8 @@
 import libcore.util.ZoneInfoDB;
 
 import java.io.IOException;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 
 /**
  * This class provides access to the system alarm services.  These allow you
@@ -78,6 +81,16 @@
 public class AlarmManager {
     private static final String TAG = "AlarmManager";
 
+    /** @hide */
+    @IntDef(prefix = { "RTC", "ELAPSED" }, value = {
+            RTC_WAKEUP,
+            RTC,
+            ELAPSED_REALTIME_WAKEUP,
+            ELAPSED_REALTIME,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface AlarmType {}
+
     /**
      * Alarm time in {@link System#currentTimeMillis System.currentTimeMillis()}
      * (wall clock time in UTC), which will wake up the device when
@@ -311,8 +324,7 @@
      * will be treated as exact.
      * </div>
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should go
      * off, using the appropriate clock (depending on the alarm type).
      * @param operation Action to perform when the alarm goes off;
@@ -332,7 +344,7 @@
      * @see #RTC
      * @see #RTC_WAKEUP
      */
-    public void set(int type, long triggerAtMillis, PendingIntent operation) {
+    public void set(@AlarmType int type, long triggerAtMillis, PendingIntent operation) {
         setImpl(type, triggerAtMillis, legacyExactLength(), 0, 0, operation, null, null,
                 null, null, null);
     }
@@ -346,8 +358,7 @@
      * invoked via the specified target Handler, or on the application's main looper
      * if {@code null} is passed as the {@code targetHandler} parameter.
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *         {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should go
      *         off, using the appropriate clock (depending on the alarm type).
      * @param tag string describing the alarm, used for logging and battery-use
@@ -360,7 +371,7 @@
      * @param targetHandler {@link Handler} on which to execute the listener's onAlarm()
      *         callback, or {@code null} to run that callback on the main looper.
      */
-    public void set(int type, long triggerAtMillis, String tag, OnAlarmListener listener,
+    public void set(@AlarmType int type, long triggerAtMillis, String tag, OnAlarmListener listener,
             Handler targetHandler) {
         setImpl(type, triggerAtMillis, legacyExactLength(), 0, 0, null, listener, tag,
                 targetHandler, null, null);
@@ -399,8 +410,7 @@
      * whose {@code targetSdkVersion} is earlier than API 19 will continue to have all
      * of their alarms, including repeating alarms, treated as exact.
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should first
      * go off, using the appropriate clock (depending on the alarm type).
      * @param intervalMillis interval in milliseconds between subsequent repeats
@@ -422,7 +432,7 @@
      * @see #RTC
      * @see #RTC_WAKEUP
      */
-    public void setRepeating(int type, long triggerAtMillis,
+    public void setRepeating(@AlarmType int type, long triggerAtMillis,
             long intervalMillis, PendingIntent operation) {
         setImpl(type, triggerAtMillis, legacyExactLength(), intervalMillis, 0, operation,
                 null, null, null, null, null);
@@ -448,8 +458,7 @@
      * at precisely-specified times with no acceptable variation, applications can use
      * {@link #setExact(int, long, PendingIntent)}.
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param windowStartMillis The earliest time, in milliseconds, that the alarm should
      *        be delivered, expressed in the appropriate clock's units (depending on the alarm
      *        type).
@@ -473,7 +482,7 @@
      * @see #RTC
      * @see #RTC_WAKEUP
      */
-    public void setWindow(int type, long windowStartMillis, long windowLengthMillis,
+    public void setWindow(@AlarmType int type, long windowStartMillis, long windowLengthMillis,
             PendingIntent operation) {
         setImpl(type, windowStartMillis, windowLengthMillis, 0, 0, operation,
                 null, null, null, null, null);
@@ -488,7 +497,7 @@
      * invoked via the specified target Handler, or on the application's main looper
      * if {@code null} is passed as the {@code targetHandler} parameter.
      */
-    public void setWindow(int type, long windowStartMillis, long windowLengthMillis,
+    public void setWindow(@AlarmType int type, long windowStartMillis, long windowLengthMillis,
             String tag, OnAlarmListener listener, Handler targetHandler) {
         setImpl(type, windowStartMillis, windowLengthMillis, 0, 0, null, listener, tag,
                 targetHandler, null, null);
@@ -508,8 +517,7 @@
      * scheduled as exact.  Applications are strongly discouraged from using exact
      * alarms unnecessarily as they reduce the OS's ability to minimize battery use.
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should go
      *        off, using the appropriate clock (depending on the alarm type).
      * @param operation Action to perform when the alarm goes off;
@@ -528,7 +536,7 @@
      * @see #RTC
      * @see #RTC_WAKEUP
      */
-    public void setExact(int type, long triggerAtMillis, PendingIntent operation) {
+    public void setExact(@AlarmType int type, long triggerAtMillis, PendingIntent operation) {
         setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, 0, operation, null, null, null,
                 null, null);
     }
@@ -542,8 +550,8 @@
      * invoked via the specified target Handler, or on the application's main looper
      * if {@code null} is passed as the {@code targetHandler} parameter.
      */
-    public void setExact(int type, long triggerAtMillis, String tag, OnAlarmListener listener,
-            Handler targetHandler) {
+    public void setExact(@AlarmType int type, long triggerAtMillis, String tag,
+            OnAlarmListener listener, Handler targetHandler) {
         setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, 0, null, listener, tag,
                 targetHandler, null, null);
     }
@@ -553,8 +561,8 @@
      * the given time.
      * @hide
      */
-    public void setIdleUntil(int type, long triggerAtMillis, String tag, OnAlarmListener listener,
-            Handler targetHandler) {
+    public void setIdleUntil(@AlarmType int type, long triggerAtMillis, String tag,
+            OnAlarmListener listener, Handler targetHandler) {
         setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, FLAG_IDLE_UNTIL, null,
                 listener, tag, targetHandler, null, null);
     }
@@ -590,8 +598,8 @@
 
     /** @hide */
     @SystemApi
-    public void set(int type, long triggerAtMillis, long windowMillis, long intervalMillis,
-            PendingIntent operation, WorkSource workSource) {
+    public void set(@AlarmType int type, long triggerAtMillis, long windowMillis,
+            long intervalMillis, PendingIntent operation, WorkSource workSource) {
         setImpl(type, triggerAtMillis, windowMillis, intervalMillis, 0, operation, null, null,
                 null, workSource, null);
     }
@@ -606,8 +614,9 @@
      *
      * @hide
      */
-    public void set(int type, long triggerAtMillis, long windowMillis, long intervalMillis,
-            String tag, OnAlarmListener listener, Handler targetHandler, WorkSource workSource) {
+    public void set(@AlarmType int type, long triggerAtMillis, long windowMillis,
+            long intervalMillis, String tag, OnAlarmListener listener, Handler targetHandler,
+            WorkSource workSource) {
         setImpl(type, triggerAtMillis, windowMillis, intervalMillis, 0, null, listener, tag,
                 targetHandler, workSource, null);
     }
@@ -623,15 +632,17 @@
      * @hide
      */
     @SystemApi
-    public void set(int type, long triggerAtMillis, long windowMillis, long intervalMillis,
-            OnAlarmListener listener, Handler targetHandler, WorkSource workSource) {
+    public void set(@AlarmType int type, long triggerAtMillis, long windowMillis,
+            long intervalMillis, OnAlarmListener listener, Handler targetHandler,
+            WorkSource workSource) {
         setImpl(type, triggerAtMillis, windowMillis, intervalMillis, 0, null, listener, null,
                 targetHandler, workSource, null);
     }
 
-    private void setImpl(int type, long triggerAtMillis, long windowMillis, long intervalMillis,
-            int flags, PendingIntent operation, final OnAlarmListener listener, String listenerTag,
-            Handler targetHandler, WorkSource workSource, AlarmClockInfo alarmClock) {
+    private void setImpl(@AlarmType int type, long triggerAtMillis, long windowMillis,
+            long intervalMillis, int flags, PendingIntent operation, final OnAlarmListener listener,
+            String listenerTag, Handler targetHandler, WorkSource workSource,
+            AlarmClockInfo alarmClock) {
         if (triggerAtMillis < 0) {
             /* NOTYET
             if (mAlwaysExact) {
@@ -728,8 +739,7 @@
      * assured that it will get similar behavior on both current and older versions
      * of Android.
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should first
      * go off, using the appropriate clock (depending on the alarm type).  This
      * is inexact: the alarm will not fire before this time, but there may be a
@@ -763,7 +773,7 @@
      * @see #INTERVAL_HALF_DAY
      * @see #INTERVAL_DAY
      */
-    public void setInexactRepeating(int type, long triggerAtMillis,
+    public void setInexactRepeating(@AlarmType int type, long triggerAtMillis,
             long intervalMillis, PendingIntent operation) {
         setImpl(type, triggerAtMillis, WINDOW_HEURISTIC, intervalMillis, 0, operation, null,
                 null, null, null, null);
@@ -795,8 +805,7 @@
      * <p>Regardless of the app's target SDK version, this call always allows batching of the
      * alarm.</p>
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should go
      * off, using the appropriate clock (depending on the alarm type).
      * @param operation Action to perform when the alarm goes off;
@@ -814,7 +823,8 @@
      * @see #RTC
      * @see #RTC_WAKEUP
      */
-    public void setAndAllowWhileIdle(int type, long triggerAtMillis, PendingIntent operation) {
+    public void setAndAllowWhileIdle(@AlarmType int type, long triggerAtMillis,
+            PendingIntent operation) {
         setImpl(type, triggerAtMillis, WINDOW_HEURISTIC, 0, FLAG_ALLOW_WHILE_IDLE,
                 operation, null, null, null, null, null);
     }
@@ -848,8 +858,7 @@
      * device is idle it may take even more liberties with scheduling in order to optimize
      * for battery life.</p>
      *
-     * @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP},
-     *        {@link #RTC}, or {@link #RTC_WAKEUP}.
+     * @param type type of alarm.
      * @param triggerAtMillis time in milliseconds that the alarm should go
      *        off, using the appropriate clock (depending on the alarm type).
      * @param operation Action to perform when the alarm goes off;
@@ -868,7 +877,8 @@
      * @see #RTC
      * @see #RTC_WAKEUP
      */
-    public void setExactAndAllowWhileIdle(int type, long triggerAtMillis, PendingIntent operation) {
+    public void setExactAndAllowWhileIdle(@AlarmType int type, long triggerAtMillis,
+            PendingIntent operation) {
         setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, FLAG_ALLOW_WHILE_IDLE, operation,
                 null, null, null, null, null);
     }
diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index 602cccb..2b4fb19 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -676,7 +676,16 @@
      * Finally, a notification can be made {@link #VISIBILITY_SECRET}, which will suppress its icon
      * and ticker until the user has bypassed the lockscreen.
      */
-    public int visibility;
+    public @Visibility int visibility;
+
+    /** @hide */
+    @IntDef(prefix = { "VISIBILITY_" }, value = {
+            VISIBILITY_PUBLIC,
+            VISIBILITY_PRIVATE,
+            VISIBILITY_SECRET,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface Visibility {}
 
     /**
      * Notification visibility: Show this notification in its entirety on all lockscreens.
@@ -3545,12 +3554,9 @@
         /**
          * Specify the value of {@link #visibility}.
          *
-         * @param visibility One of {@link #VISIBILITY_PRIVATE} (the default),
-         * {@link #VISIBILITY_SECRET}, or {@link #VISIBILITY_PUBLIC}.
-         *
          * @return The same Builder.
          */
-        public Builder setVisibility(int visibility) {
+        public Builder setVisibility(@Visibility int visibility) {
             mN.visibility = visibility;
             return this;
         }
diff --git a/core/java/android/app/NotificationChannel.java b/core/java/android/app/NotificationChannel.java
index 9059daa..2dd3301 100644
--- a/core/java/android/app/NotificationChannel.java
+++ b/core/java/android/app/NotificationChannel.java
@@ -162,10 +162,9 @@
      *             broadcast. The recommended maximum length is 40 characters; the value may be
      *             truncated if it is too long.
      * @param importance The importance of the channel. This controls how interruptive notifications
-     *                   posted to this channel are. See e.g.
-     *                   {@link NotificationManager#IMPORTANCE_DEFAULT}.
+     *                   posted to this channel are.
      */
-    public NotificationChannel(String id, CharSequence name, int importance) {
+    public NotificationChannel(String id, CharSequence name, @Importance int importance) {
         this.mId = getTrimmedString(id);
         this.mName = name != null ? getTrimmedString(name.toString()) : null;
         this.mImportance = importance;
diff --git a/core/java/android/app/job/JobInfo.java b/core/java/android/app/job/JobInfo.java
index 3538256..007ea88 100644
--- a/core/java/android/app/job/JobInfo.java
+++ b/core/java/android/app/job/JobInfo.java
@@ -18,8 +18,10 @@
 
 import static android.util.TimeUtils.formatDuration;
 
+import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.RequiresPermission;
 import android.content.ClipData;
 import android.content.ComponentName;
 import android.net.Uri;
@@ -30,6 +32,8 @@
 import android.os.PersistableBundle;
 import android.util.Log;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 import java.util.Objects;
 
@@ -43,6 +47,18 @@
  */
 public class JobInfo implements Parcelable {
     private static String TAG = "JobInfo";
+
+    /** @hide */
+    @IntDef(prefix = { "NETWORK_TYPE_" }, value = {
+            NETWORK_TYPE_NONE,
+            NETWORK_TYPE_ANY,
+            NETWORK_TYPE_UNMETERED,
+            NETWORK_TYPE_NOT_ROAMING,
+            NETWORK_TYPE_METERED,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface NetworkType {}
+
     /** Default. */
     public static final int NETWORK_TYPE_NONE = 0;
     /** This job requires network connectivity. */
@@ -64,6 +80,14 @@
      */
     public static final long MAX_BACKOFF_DELAY_MILLIS = 5 * 60 * 60 * 1000;  // 5 hours.
 
+    /** @hide */
+    @IntDef(prefix = { "BACKOFF_POLICY_" }, value = {
+            BACKOFF_POLICY_LINEAR,
+            BACKOFF_POLICY_EXPONENTIAL,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface BackoffPolicy {}
+
     /**
      * Linearly back-off a failed job. See
      * {@link android.app.job.JobInfo.Builder#setBackoffCriteria(long, int)}
@@ -349,14 +373,8 @@
 
     /**
      * The kind of connectivity requirements that the job has.
-     *
-     * @return One of {@link android.app.job.JobInfo#NETWORK_TYPE_ANY},
-     * {@link android.app.job.JobInfo#NETWORK_TYPE_NONE},
-     * {@link android.app.job.JobInfo#NETWORK_TYPE_UNMETERED},
-     * {@link android.app.job.JobInfo#NETWORK_TYPE_METERED}, or
-     * {@link android.app.job.JobInfo#NETWORK_TYPE_NOT_ROAMING},
      */
-    public int getNetworkType() {
+    public @NetworkType int getNetworkType() {
         return networkType;
     }
 
@@ -421,11 +439,9 @@
     }
 
     /**
-     * One of either {@link android.app.job.JobInfo#BACKOFF_POLICY_EXPONENTIAL}, or
-     * {@link android.app.job.JobInfo#BACKOFF_POLICY_LINEAR}, depending on which criteria you set
-     * when creating this job.
+     * Return the backoff policy of this job.
      */
-    public int getBackoffPolicy() {
+    public @BackoffPolicy int getBackoffPolicy() {
         return backoffPolicy;
     }
 
@@ -692,6 +708,13 @@
         private final Uri mUri;
         private final int mFlags;
 
+        /** @hide */
+        @Retention(RetentionPolicy.SOURCE)
+        @IntDef(flag = true, prefix = { "FLAG_" }, value = {
+                FLAG_NOTIFY_FOR_DESCENDANTS,
+        })
+        public @interface Flags { }
+
         /**
          * Flag for trigger: also trigger if any descendants of the given URI change.
          * Corresponds to the <var>notifyForDescendants</var> of
@@ -702,10 +725,9 @@
         /**
          * Create a new trigger description.
          * @param uri The URI to observe.  Must be non-null.
-         * @param flags Optional flags for the observer, either 0 or
-         * {@link #FLAG_NOTIFY_FOR_DESCENDANTS}.
+         * @param flags Flags for the observer.
          */
-        public TriggerContentUri(@NonNull Uri uri, int flags) {
+        public TriggerContentUri(@NonNull Uri uri, @Flags int flags) {
             mUri = uri;
             mFlags = flags;
         }
@@ -720,7 +742,7 @@
         /**
          * Return the flags supplied for the trigger.
          */
-        public int getFlags() {
+        public @Flags int getFlags() {
             return mFlags;
         }
 
@@ -886,7 +908,7 @@
          * job. If the network requested is not available your job will never run. See
          * {@link #setOverrideDeadline(long)} to change this behaviour.
          */
-        public Builder setRequiredNetworkType(int networkType) {
+        public Builder setRequiredNetworkType(@NetworkType int networkType) {
             mNetworkType = networkType;
             return this;
         }
@@ -1067,10 +1089,9 @@
          * mode.
          * @param initialBackoffMillis Millisecond time interval to wait initially when job has
          *                             failed.
-         * @param backoffPolicy is one of {@link #BACKOFF_POLICY_LINEAR} or
-         * {@link #BACKOFF_POLICY_EXPONENTIAL}
          */
-        public Builder setBackoffCriteria(long initialBackoffMillis, int backoffPolicy) {
+        public Builder setBackoffCriteria(long initialBackoffMillis,
+                @BackoffPolicy int backoffPolicy) {
             mBackoffPolicySet = true;
             mInitialBackoffMillis = initialBackoffMillis;
             mBackoffPolicy = backoffPolicy;
@@ -1078,13 +1099,12 @@
         }
 
         /**
-         * Set whether or not to persist this job across device reboots. This will only have an
-         * effect if your application holds the permission
-         * {@link android.Manifest.permission#RECEIVE_BOOT_COMPLETED}. Otherwise an exception will
-         * be thrown.
-         * @param isPersisted True to indicate that the job will be written to disk and loaded at
-         *                    boot.
+         * Set whether or not to persist this job across device reboots.
+         *
+         * @param isPersisted True to indicate that the job will be written to
+         *            disk and loaded at boot.
          */
+        @RequiresPermission(android.Manifest.permission.RECEIVE_BOOT_COMPLETED)
         public Builder setPersisted(boolean isPersisted) {
             mIsPersisted = isPersisted;
             return this;
diff --git a/core/java/android/app/job/JobScheduler.java b/core/java/android/app/job/JobScheduler.java
index 23f9eea..1768828 100644
--- a/core/java/android/app/job/JobScheduler.java
+++ b/core/java/android/app/job/JobScheduler.java
@@ -16,6 +16,7 @@
 
 package android.app.job;
 
+import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
@@ -24,6 +25,8 @@
 import android.os.Bundle;
 import android.os.PersistableBundle;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.List;
 
 /**
@@ -51,6 +54,14 @@
  * Context.getSystemService(Context.JOB_SCHEDULER_SERVICE)}.
  */
 public abstract class JobScheduler {
+    /** @hide */
+    @IntDef(prefix = { "RESULT_" }, value = {
+            RESULT_FAILURE,
+            RESULT_SUCCESS,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface Result {}
+
     /**
      * Returned from {@link #schedule(JobInfo)} when an invalid parameter was supplied. This can occur
      * if the run-time for your job is too short, or perhaps the system can't resolve the
@@ -70,9 +81,9 @@
      * @param job The job you wish scheduled. See
      * {@link android.app.job.JobInfo.Builder JobInfo.Builder} for more detail on the sorts of jobs
      * you can schedule.
-     * @return An int representing ({@link #RESULT_SUCCESS} or {@link #RESULT_FAILURE}).
+     * @return the result of the schedule request.
      */
-    public abstract int schedule(@NonNull JobInfo job);
+    public abstract @Result int schedule(@NonNull JobInfo job);
 
     /**
      * Similar to {@link #schedule}, but allows you to enqueue work for a new <em>or existing</em>
@@ -107,9 +118,9 @@
      * {@link android.app.job.JobInfo.Builder JobInfo.Builder} for more detail on the sorts of jobs
      * you can schedule.
      * @param work New work to enqueue.  This will be available later when the job starts running.
-     * @return An int representing ({@link #RESULT_SUCCESS} or {@link #RESULT_FAILURE}).
+     * @return the result of the enqueue request.
      */
-    public abstract int enqueue(@NonNull JobInfo job, @NonNull JobWorkItem work);
+    public abstract @Result int enqueue(@NonNull JobInfo job, @NonNull JobWorkItem work);
 
     /**
      *
@@ -118,11 +129,10 @@
      *                    used to track battery usage and appIdleState.
      * @param userId    User on behalf of whom this job is to be scheduled.
      * @param tag Debugging tag for dumps associated with this job (instead of the service class)
-     * @return {@link #RESULT_SUCCESS} or {@link #RESULT_FAILURE}
      * @hide
      */
     @SystemApi
-    public abstract int scheduleAsPackage(@NonNull JobInfo job, @NonNull String packageName,
+    public abstract @Result int scheduleAsPackage(@NonNull JobInfo job, @NonNull String packageName,
             int userId, String tag);
 
     /**
diff --git a/core/java/android/content/ComponentName.java b/core/java/android/content/ComponentName.java
index 8aeb22d..ea6b769 100644
--- a/core/java/android/content/ComponentName.java
+++ b/core/java/android/content/ComponentName.java
@@ -16,6 +16,8 @@
 
 package android.content;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
@@ -52,7 +54,7 @@
      *            the component
      * @return the new ComponentName
      */
-    public static ComponentName createRelative(String pkg, String cls) {
+    public static @NonNull ComponentName createRelative(@NonNull String pkg, @NonNull String cls) {
         if (TextUtils.isEmpty(cls)) {
             throw new IllegalArgumentException("class name cannot be empty");
         }
@@ -83,7 +85,7 @@
      *            the component
      * @return the new ComponentName
      */
-    public static ComponentName createRelative(Context pkg, String cls) {
+    public static @NonNull ComponentName createRelative(@NonNull Context pkg, @NonNull String cls) {
         return createRelative(pkg.getPackageName(), cls);
     }
 
@@ -95,7 +97,7 @@
      * @param cls The name of the class inside of <var>pkg</var> that
      * implements the component.  Can not be null.
      */
-    public ComponentName(String pkg, String cls) {
+    public ComponentName(@NonNull String pkg, @NonNull String cls) {
         if (pkg == null) throw new NullPointerException("package name is null");
         if (cls == null) throw new NullPointerException("class name is null");
         mPackage = pkg;
@@ -110,7 +112,7 @@
      * @param cls The name of the class inside of <var>pkg</var> that
      * implements the component.
      */
-    public ComponentName(Context pkg, String cls) {
+    public ComponentName(@NonNull Context pkg, @NonNull String cls) {
         if (cls == null) throw new NullPointerException("class name is null");
         mPackage = pkg.getPackageName();
         mClass = cls;
@@ -124,7 +126,7 @@
      * @param cls The Class object of the desired component, from which the
      * actual class name will be retrieved.
      */
-    public ComponentName(Context pkg, Class<?> cls) {
+    public ComponentName(@NonNull Context pkg, @NonNull Class<?> cls) {
         mPackage = pkg.getPackageName();
         mClass = cls.getName();
     }
@@ -136,14 +138,14 @@
     /**
      * Return the package name of this component.
      */
-    public String getPackageName() {
+    public @NonNull String getPackageName() {
         return mPackage;
     }
     
     /**
      * Return the class name of this component.
      */
-    public String getClassName() {
+    public @NonNull String getClassName() {
         return mClass;
     }
     
@@ -200,7 +202,7 @@
      * 
      * @see #unflattenFromString(String)
      */
-    public String flattenToString() {
+    public @NonNull String flattenToString() {
         return mPackage + "/" + mClass;
     }
     
@@ -215,7 +217,7 @@
      * 
      * @see #unflattenFromString(String)
      */
-    public String flattenToShortString() {
+    public @NonNull String flattenToShortString() {
         StringBuilder sb = new StringBuilder(mPackage.length() + mClass.length());
         appendShortString(sb, mPackage, mClass);
         return sb.toString();
@@ -255,7 +257,7 @@
      * 
      * @see #flattenToString()
      */
-    public static ComponentName unflattenFromString(String str) {
+    public static @Nullable ComponentName unflattenFromString(@NonNull String str) {
         int sep = str.indexOf('/');
         if (sep < 0 || (sep+1) >= str.length()) {
             return null;
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 1585d21..42ef871 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -85,6 +85,37 @@
  * broadcasting and receiving intents, etc.
  */
 public abstract class Context {
+    /** @hide */
+    @IntDef(flag = true, prefix = { "MODE_" }, value = {
+            MODE_PRIVATE,
+            MODE_WORLD_READABLE,
+            MODE_WORLD_WRITEABLE,
+            MODE_APPEND,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface FileMode {}
+
+    /** @hide */
+    @IntDef(flag = true, prefix = { "MODE_" }, value = {
+            MODE_PRIVATE,
+            MODE_WORLD_READABLE,
+            MODE_WORLD_WRITEABLE,
+            MODE_MULTI_PROCESS,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface PreferencesMode {}
+
+    /** @hide */
+    @IntDef(flag = true, prefix = { "MODE_" }, value = {
+            MODE_PRIVATE,
+            MODE_WORLD_READABLE,
+            MODE_WORLD_WRITEABLE,
+            MODE_ENABLE_WRITE_AHEAD_LOGGING,
+            MODE_NO_LOCALIZED_COLLATORS,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface DatabaseMode {}
+
     /**
      * File creation mode: the default mode, where the created file can only
      * be accessed by the calling application (or all applications sharing the
@@ -720,15 +751,14 @@
      * @param name Desired preferences file. If a preferences file by this name
      * does not exist, it will be created when you retrieve an
      * editor (SharedPreferences.edit()) and then commit changes (Editor.commit()).
-     * @param mode Operating mode.  Use 0 or {@link #MODE_PRIVATE} for the
-     * default operation.
+     * @param mode Operating mode.
      *
      * @return The single {@link SharedPreferences} instance that can be used
      *         to retrieve and modify the preference values.
      *
      * @see #MODE_PRIVATE
      */
-    public abstract SharedPreferences getSharedPreferences(String name, int mode);
+    public abstract SharedPreferences getSharedPreferences(String name, @PreferencesMode int mode);
 
     /**
      * Retrieve and hold the contents of the preferences file, returning
@@ -740,8 +770,7 @@
      * @param file Desired preferences file. If a preferences file by this name
      * does not exist, it will be created when you retrieve an
      * editor (SharedPreferences.edit()) and then commit changes (Editor.commit()).
-     * @param mode Operating mode.  Use 0 or {@link #MODE_PRIVATE} for the
-     * default operation.
+     * @param mode Operating mode.
      *
      * @return The single {@link SharedPreferences} instance that can be used
      *         to retrieve and modify the preference values.
@@ -750,7 +779,7 @@
      * @see #MODE_PRIVATE
      * @removed
      */
-    public abstract SharedPreferences getSharedPreferences(File file, int mode);
+    public abstract SharedPreferences getSharedPreferences(File file, @PreferencesMode int mode);
 
     /**
      * Move an existing shared preferences file from the given source storage
@@ -805,9 +834,7 @@
      *
      * @param name The name of the file to open; can not contain path
      *            separators.
-     * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
-     *            default operation. Use {@link #MODE_APPEND} to append to an
-     *            existing file.
+     * @param mode Operating mode.
      * @return The resulting {@link FileOutputStream}.
      * @see #MODE_APPEND
      * @see #MODE_PRIVATE
@@ -816,7 +843,7 @@
      * @see #deleteFile
      * @see java.io.FileOutputStream#FileOutputStream(String)
      */
-    public abstract FileOutputStream openFileOutput(String name, int mode)
+    public abstract FileOutputStream openFileOutput(String name, @FileMode int mode)
         throws FileNotFoundException;
 
     /**
@@ -1413,26 +1440,21 @@
      *
      * @param name Name of the directory to retrieve.  This is a directory
      * that is created as part of your application data.
-     * @param mode Operating mode.  Use 0 or {@link #MODE_PRIVATE} for the
-     * default operation.
+     * @param mode Operating mode.
      *
      * @return A {@link File} object for the requested directory.  The directory
      * will have been created if it does not already exist.
      *
      * @see #openFileOutput(String, int)
      */
-    public abstract File getDir(String name, int mode);
+    public abstract File getDir(String name, @FileMode int mode);
 
     /**
      * Open a new private SQLiteDatabase associated with this Context's
      * application package. Create the database file if it doesn't exist.
      *
      * @param name The name (unique in the application package) of the database.
-     * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
-     *            default operation. Use
-     *            {@link #MODE_ENABLE_WRITE_AHEAD_LOGGING} to enable write-ahead
-     *            logging by default. Use {@link #MODE_NO_LOCALIZED_COLLATORS}
-     *            to disable localized collators.
+     * @param mode Operating mode.
      * @param factory An optional factory class that is called to instantiate a
      *            cursor when query is called.
      * @return The contents of a newly created database with the given name.
@@ -1444,7 +1466,7 @@
      * @see #deleteDatabase
      */
     public abstract SQLiteDatabase openOrCreateDatabase(String name,
-            int mode, CursorFactory factory);
+            @DatabaseMode int mode, CursorFactory factory);
 
     /**
      * Open a new private SQLiteDatabase associated with this Context's
@@ -1455,11 +1477,7 @@
      * </p>
      *
      * @param name The name (unique in the application package) of the database.
-     * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
-     *            default operation. Use
-     *            {@link #MODE_ENABLE_WRITE_AHEAD_LOGGING} to enable write-ahead
-     *            logging by default. Use {@link #MODE_NO_LOCALIZED_COLLATORS}
-     *            to disable localized collators.
+     * @param mode Operating mode.
      * @param factory An optional factory class that is called to instantiate a
      *            cursor when query is called.
      * @param errorHandler the {@link DatabaseErrorHandler} to be used when
@@ -1475,7 +1493,7 @@
      * @see #deleteDatabase
      */
     public abstract SQLiteDatabase openOrCreateDatabase(String name,
-            int mode, CursorFactory factory,
+            @DatabaseMode int mode, CursorFactory factory,
             @Nullable DatabaseErrorHandler errorHandler);
 
     /**
@@ -1777,9 +1795,9 @@
      * @see #startActivity(Intent)
      * @see #startIntentSender(IntentSender, Intent, int, int, int, Bundle)
      */
-    public abstract void startIntentSender(IntentSender intent,
-            Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
-            throws IntentSender.SendIntentException;
+    public abstract void startIntentSender(IntentSender intent, @Nullable Intent fillInIntent,
+            @Intent.MutableFlags int flagsMask, @Intent.MutableFlags int flagsValues,
+            int extraFlags) throws IntentSender.SendIntentException;
 
     /**
      * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender
@@ -1806,9 +1824,9 @@
      * @see #startActivity(Intent, Bundle)
      * @see #startIntentSender(IntentSender, Intent, int, int, int)
      */
-    public abstract void startIntentSender(IntentSender intent,
-            @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags,
-            Bundle options) throws IntentSender.SendIntentException;
+    public abstract void startIntentSender(IntentSender intent, @Nullable Intent fillInIntent,
+            @Intent.MutableFlags int flagsMask, @Intent.MutableFlags int flagsValues,
+            int extraFlags, @Nullable Bundle options) throws IntentSender.SendIntentException;
 
     /**
      * Broadcast the given intent to all interested BroadcastReceivers.  This
@@ -2192,10 +2210,6 @@
      * all other ways, this behaves the same as
      * {@link #sendBroadcast(Intent)}.
      *
-     * <p>You must hold the {@link android.Manifest.permission#BROADCAST_STICKY}
-     * permission in order to use this API.  If you do not hold that
-     * permission, {@link SecurityException} will be thrown.
-     *
      * @deprecated Sticky broadcasts should not be used.  They provide no security (anyone
      * can access them), no protection (anyone can modify them), and many other problems.
      * The recommended pattern is to use a non-sticky broadcast to report that <em>something</em>
@@ -2210,6 +2224,7 @@
      * @see #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle)
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.BROADCAST_STICKY)
     public abstract void sendStickyBroadcast(@RequiresPermission Intent intent);
 
     /**
@@ -2259,6 +2274,7 @@
      * @see android.app.Activity#RESULT_OK
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.BROADCAST_STICKY)
     public abstract void sendStickyOrderedBroadcast(@RequiresPermission Intent intent,
             BroadcastReceiver resultReceiver,
             @Nullable Handler scheduler, int initialCode, @Nullable String initialData,
@@ -2268,10 +2284,6 @@
      * <p>Remove the data previously sent with {@link #sendStickyBroadcast},
      * so that it is as if the sticky broadcast had never happened.
      *
-     * <p>You must hold the {@link android.Manifest.permission#BROADCAST_STICKY}
-     * permission in order to use this API.  If you do not hold that
-     * permission, {@link SecurityException} will be thrown.
-     *
      * @deprecated Sticky broadcasts should not be used.  They provide no security (anyone
      * can access them), no protection (anyone can modify them), and many other problems.
      * The recommended pattern is to use a non-sticky broadcast to report that <em>something</em>
@@ -2283,6 +2295,7 @@
      * @see #sendStickyBroadcast
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.BROADCAST_STICKY)
     public abstract void removeStickyBroadcast(@RequiresPermission Intent intent);
 
     /**
@@ -3048,7 +3061,7 @@
      * @see android.os.HardwarePropertiesManager
      * @see #HARDWARE_PROPERTIES_SERVICE
      */
-    public abstract Object getSystemService(@ServiceName @NonNull String name);
+    public abstract @Nullable Object getSystemService(@ServiceName @NonNull String name);
 
     /**
      * Return the handle to a system-level service by class.
@@ -3078,7 +3091,7 @@
      * @return The service or null if the class is not a supported system service.
      */
     @SuppressWarnings("unchecked")
-    public final <T> T getSystemService(Class<T> serviceClass) {
+    public final @Nullable <T> T getSystemService(@NonNull Class<T> serviceClass) {
         // Because subclasses may override getSystemService(String) we cannot
         // perform a lookup by class alone.  We must first map the class to its
         // service name then invoke the string-based method.
@@ -3092,7 +3105,7 @@
      * @param serviceClass The class of the desired service.
      * @return The service name or null if the class is not a supported system service.
      */
-    public abstract String getSystemServiceName(Class<?> serviceClass);
+    public abstract @Nullable String getSystemServiceName(@NonNull Class<?> serviceClass);
 
     /**
      * Use with {@link #getSystemService} to retrieve a
@@ -4181,10 +4194,12 @@
      * @see #checkCallingUriPermission
      */
     @CheckResult(suggest="#enforceUriPermission(Uri,int,int,String)")
+    @PackageManager.PermissionResult
     public abstract int checkUriPermission(Uri uri, int pid, int uid,
             @Intent.AccessUriMode int modeFlags);
 
     /** @hide */
+    @PackageManager.PermissionResult
     public abstract int checkUriPermission(Uri uri, int pid, int uid,
             @Intent.AccessUriMode int modeFlags, IBinder callerToken);
 
@@ -4208,6 +4223,7 @@
      * @see #checkUriPermission(Uri, int, int, int)
      */
     @CheckResult(suggest="#enforceCallingUriPermission(Uri,int,String)")
+    @PackageManager.PermissionResult
     public abstract int checkCallingUriPermission(Uri uri, @Intent.AccessUriMode int modeFlags);
 
     /**
@@ -4226,6 +4242,7 @@
      * @see #checkCallingUriPermission
      */
     @CheckResult(suggest="#enforceCallingOrSelfUriPermission(Uri,int,String)")
+    @PackageManager.PermissionResult
     public abstract int checkCallingOrSelfUriPermission(Uri uri,
             @Intent.AccessUriMode int modeFlags);
 
@@ -4250,6 +4267,7 @@
      * {@link PackageManager#PERMISSION_DENIED} if it is not.
      */
     @CheckResult(suggest="#enforceUriPermission(Uri,String,String,int,int,int,String)")
+    @PackageManager.PermissionResult
     public abstract int checkUriPermission(@Nullable Uri uri, @Nullable String readPermission,
             @Nullable String writePermission, int pid, int uid,
             @Intent.AccessUriMode int modeFlags);
@@ -4336,8 +4354,14 @@
             @Nullable String message);
 
     /** @hide */
-    @IntDef(flag = true,
-            value = {CONTEXT_INCLUDE_CODE, CONTEXT_IGNORE_SECURITY, CONTEXT_RESTRICTED})
+    @IntDef(flag = true, prefix = { "CONTEXT_" }, value = {
+            CONTEXT_INCLUDE_CODE,
+            CONTEXT_IGNORE_SECURITY,
+            CONTEXT_RESTRICTED,
+            CONTEXT_DEVICE_PROTECTED_STORAGE,
+            CONTEXT_CREDENTIAL_PROTECTED_STORAGE,
+            CONTEXT_REGISTER_PACKAGE,
+    })
     @Retention(RetentionPolicy.SOURCE)
     public @interface CreatePackageOptions {}
 
@@ -4409,8 +4433,7 @@
      * {@link #CONTEXT_INCLUDE_CODE} for more information}.
      *
      * @param packageName Name of the application's package.
-     * @param flags Option flags, one of {@link #CONTEXT_INCLUDE_CODE}
-     *              or {@link #CONTEXT_IGNORE_SECURITY}.
+     * @param flags Option flags.
      *
      * @return A {@link Context} for the application.
      *
@@ -4429,7 +4452,7 @@
      * @hide
      */
     public abstract Context createPackageContextAsUser(
-            String packageName, int flags, UserHandle user)
+            String packageName, @CreatePackageOptions int flags, UserHandle user)
             throws PackageManager.NameNotFoundException;
 
     /**
@@ -4438,7 +4461,7 @@
      * @hide
      */
     public abstract Context createApplicationContext(ApplicationInfo application,
-            int flags) throws PackageManager.NameNotFoundException;
+            @CreatePackageOptions int flags) throws PackageManager.NameNotFoundException;
 
     /**
      * Return a new Context object for the given split name. The new Context has a ClassLoader and
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index b6f9ac9..9c87ff2 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -19,6 +19,8 @@
 import android.annotation.AnyRes;
 import android.annotation.BroadcastBehavior;
 import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
@@ -4903,6 +4905,96 @@
                 | Intent.FLAG_GRANT_WRITE_URI_PERMISSION)) != 0;
     }
 
+    /** @hide */
+    @IntDef(flag = true, prefix = { "FLAG_" }, value = {
+            FLAG_GRANT_READ_URI_PERMISSION,
+            FLAG_GRANT_WRITE_URI_PERMISSION,
+            FLAG_FROM_BACKGROUND,
+            FLAG_DEBUG_LOG_RESOLUTION,
+            FLAG_EXCLUDE_STOPPED_PACKAGES,
+            FLAG_INCLUDE_STOPPED_PACKAGES,
+            FLAG_GRANT_PERSISTABLE_URI_PERMISSION,
+            FLAG_GRANT_PREFIX_URI_PERMISSION,
+            FLAG_DEBUG_TRIAGED_MISSING,
+            FLAG_IGNORE_EPHEMERAL,
+            FLAG_ACTIVITY_NO_HISTORY,
+            FLAG_ACTIVITY_SINGLE_TOP,
+            FLAG_ACTIVITY_NEW_TASK,
+            FLAG_ACTIVITY_MULTIPLE_TASK,
+            FLAG_ACTIVITY_CLEAR_TOP,
+            FLAG_ACTIVITY_FORWARD_RESULT,
+            FLAG_ACTIVITY_PREVIOUS_IS_TOP,
+            FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS,
+            FLAG_ACTIVITY_BROUGHT_TO_FRONT,
+            FLAG_ACTIVITY_RESET_TASK_IF_NEEDED,
+            FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY,
+            FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET,
+            FLAG_ACTIVITY_NEW_DOCUMENT,
+            FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET,
+            FLAG_ACTIVITY_NO_USER_ACTION,
+            FLAG_ACTIVITY_REORDER_TO_FRONT,
+            FLAG_ACTIVITY_NO_ANIMATION,
+            FLAG_ACTIVITY_CLEAR_TASK,
+            FLAG_ACTIVITY_TASK_ON_HOME,
+            FLAG_ACTIVITY_RETAIN_IN_RECENTS,
+            FLAG_ACTIVITY_LAUNCH_ADJACENT,
+            FLAG_RECEIVER_REGISTERED_ONLY,
+            FLAG_RECEIVER_REPLACE_PENDING,
+            FLAG_RECEIVER_FOREGROUND,
+            FLAG_RECEIVER_NO_ABORT,
+            FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT,
+            FLAG_RECEIVER_BOOT_UPGRADE,
+            FLAG_RECEIVER_INCLUDE_BACKGROUND,
+            FLAG_RECEIVER_EXCLUDE_BACKGROUND,
+            FLAG_RECEIVER_FROM_SHELL,
+            FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface Flags {}
+
+    /** @hide */
+    @IntDef(flag = true, prefix = { "FLAG_" }, value = {
+            FLAG_FROM_BACKGROUND,
+            FLAG_DEBUG_LOG_RESOLUTION,
+            FLAG_EXCLUDE_STOPPED_PACKAGES,
+            FLAG_INCLUDE_STOPPED_PACKAGES,
+            FLAG_DEBUG_TRIAGED_MISSING,
+            FLAG_IGNORE_EPHEMERAL,
+            FLAG_ACTIVITY_NO_HISTORY,
+            FLAG_ACTIVITY_SINGLE_TOP,
+            FLAG_ACTIVITY_NEW_TASK,
+            FLAG_ACTIVITY_MULTIPLE_TASK,
+            FLAG_ACTIVITY_CLEAR_TOP,
+            FLAG_ACTIVITY_FORWARD_RESULT,
+            FLAG_ACTIVITY_PREVIOUS_IS_TOP,
+            FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS,
+            FLAG_ACTIVITY_BROUGHT_TO_FRONT,
+            FLAG_ACTIVITY_RESET_TASK_IF_NEEDED,
+            FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY,
+            FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET,
+            FLAG_ACTIVITY_NEW_DOCUMENT,
+            FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET,
+            FLAG_ACTIVITY_NO_USER_ACTION,
+            FLAG_ACTIVITY_REORDER_TO_FRONT,
+            FLAG_ACTIVITY_NO_ANIMATION,
+            FLAG_ACTIVITY_CLEAR_TASK,
+            FLAG_ACTIVITY_TASK_ON_HOME,
+            FLAG_ACTIVITY_RETAIN_IN_RECENTS,
+            FLAG_ACTIVITY_LAUNCH_ADJACENT,
+            FLAG_RECEIVER_REGISTERED_ONLY,
+            FLAG_RECEIVER_REPLACE_PENDING,
+            FLAG_RECEIVER_FOREGROUND,
+            FLAG_RECEIVER_NO_ABORT,
+            FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT,
+            FLAG_RECEIVER_BOOT_UPGRADE,
+            FLAG_RECEIVER_INCLUDE_BACKGROUND,
+            FLAG_RECEIVER_EXCLUDE_BACKGROUND,
+            FLAG_RECEIVER_FROM_SHELL,
+            FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface MutableFlags {}
+
     /**
      * If set, the recipient of this Intent will be granted permission to
      * perform read operations on the URI in the Intent's data and any URIs
@@ -5369,6 +5461,15 @@
     // ---------------------------------------------------------------------
     // toUri() and parseUri() options.
 
+    /** @hide */
+    @IntDef(flag = true, prefix = { "URI_" }, value = {
+            URI_ALLOW_UNSAFE,
+            URI_ANDROID_APP_SCHEME,
+            URI_INTENT_SCHEME,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface UriFlags {}
+
     /**
      * Flag for use with {@link #toUri} and {@link #parseUri}: the URI string
      * always has the "intent:" scheme.  This syntax can be used when you want
@@ -5538,7 +5639,7 @@
      * Make a clone of only the parts of the Intent that are relevant for
      * filter matching: the action, data, type, component, and categories.
      */
-    public Intent cloneFilter() {
+    public @NonNull Intent cloneFilter() {
         return new Intent(this, false);
     }
 
@@ -5727,8 +5828,7 @@
      * the scheme and full path.
      *
      * @param uri The URI to turn into an Intent.
-     * @param flags Additional processing flags.  Either 0,
-     * {@link #URI_INTENT_SCHEME}, or {@link #URI_ANDROID_APP_SCHEME}.
+     * @param flags Additional processing flags.
      *
      * @return Intent The newly created Intent object.
      *
@@ -5738,7 +5838,7 @@
      *
      * @see #toUri
      */
-    public static Intent parseUri(String uri, int flags) throws URISyntaxException {
+    public static Intent parseUri(String uri, @UriFlags int flags) throws URISyntaxException {
         int i = 0;
         try {
             final boolean androidApp = uri.startsWith("android-app:");
@@ -6568,7 +6668,7 @@
      *
      * @see #setAction
      */
-    public String getAction() {
+    public @Nullable String getAction() {
         return mAction;
     }
 
@@ -6583,7 +6683,7 @@
      * @see #getScheme
      * @see #setData
      */
-    public Uri getData() {
+    public @Nullable Uri getData() {
         return mData;
     }
 
@@ -6591,7 +6691,7 @@
      * The same as {@link #getData()}, but returns the URI as an encoded
      * String.
      */
-    public String getDataString() {
+    public @Nullable String getDataString() {
         return mData != null ? mData.toString() : null;
     }
 
@@ -6607,7 +6707,7 @@
      *
      * @see #getData
      */
-    public String getScheme() {
+    public @Nullable String getScheme() {
         return mData != null ? mData.getScheme() : null;
     }
 
@@ -6621,7 +6721,7 @@
      * @see #resolveType(ContentResolver)
      * @see #setType
      */
-    public String getType() {
+    public @Nullable String getType() {
         return mType;
     }
 
@@ -6636,7 +6736,7 @@
      * @see #getType
      * @see #resolveType(ContentResolver)
      */
-    public String resolveType(Context context) {
+    public @Nullable String resolveType(@NonNull Context context) {
         return resolveType(context.getContentResolver());
     }
 
@@ -6654,7 +6754,7 @@
      * @see #getType
      * @see #resolveType(Context)
      */
-    public String resolveType(ContentResolver resolver) {
+    public @Nullable String resolveType(@NonNull ContentResolver resolver) {
         if (mType != null) {
             return mType;
         }
@@ -6678,7 +6778,7 @@
      * @return The MIME type of this intent, or null if it is unknown or not
      *         needed.
      */
-    public String resolveTypeIfNeeded(ContentResolver resolver) {
+    public @Nullable String resolveTypeIfNeeded(@NonNull ContentResolver resolver) {
         if (mComponent != null) {
             return mType;
         }
@@ -6718,7 +6818,7 @@
      *
      * @see #setSelector
      */
-    public Intent getSelector() {
+    public @Nullable Intent getSelector() {
         return mSelector;
     }
 
@@ -6728,7 +6828,7 @@
      *
      * @see #setClipData
      */
-    public ClipData getClipData() {
+    public @Nullable ClipData getClipData() {
         return mClipData;
     }
 
@@ -6754,7 +6854,7 @@
      * @param loader a ClassLoader, or null to use the default loader
      * at the time of unmarshalling.
      */
-    public void setExtrasClassLoader(ClassLoader loader) {
+    public void setExtrasClassLoader(@Nullable ClassLoader loader) {
         if (mExtras != null) {
             mExtras.setClassLoader(loader);
         }
@@ -7275,7 +7375,7 @@
      * @return the map of all extras previously added with putExtra(),
      * or null if none have been added.
      */
-    public Bundle getExtras() {
+    public @Nullable Bundle getExtras() {
         return (mExtras != null)
                 ? new Bundle(mExtras)
                 : null;
@@ -7296,11 +7396,12 @@
      * normally just set them with {@link #setFlags} and let the system
      * take the appropriate action with them.
      *
-     * @return int The currently set flags.
-     *
+     * @return The currently set flags.
      * @see #setFlags
+     * @see #addFlags
+     * @see #removeFlags
      */
-    public int getFlags() {
+    public @Flags int getFlags() {
         return mFlags;
     }
 
@@ -7320,7 +7421,7 @@
      * @see #resolveActivity
      * @see #setPackage
      */
-    public String getPackage() {
+    public @Nullable String getPackage() {
         return mPackage;
     }
 
@@ -7335,7 +7436,7 @@
      * @see #resolveActivity
      * @see #setComponent
      */
-    public ComponentName getComponent() {
+    public @Nullable ComponentName getComponent() {
         return mComponent;
     }
 
@@ -7344,7 +7445,7 @@
      * used as a hint to the receiver for animations and the like.  Null means that there
      * is no source bounds.
      */
-    public Rect getSourceBounds() {
+    public @Nullable Rect getSourceBounds() {
         return mSourceBounds;
     }
 
@@ -7395,7 +7496,7 @@
      * @see #getComponent
      * @see #resolveActivityInfo
      */
-    public ComponentName resolveActivity(PackageManager pm) {
+    public ComponentName resolveActivity(@NonNull PackageManager pm) {
         if (mComponent != null) {
             return mComponent;
         }
@@ -7427,7 +7528,8 @@
      *
      * @see #resolveActivity
      */
-    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
+    public ActivityInfo resolveActivityInfo(@NonNull PackageManager pm,
+            @PackageManager.ComponentInfoFlags int flags) {
         ActivityInfo ai = null;
         if (mComponent != null) {
             try {
@@ -7453,7 +7555,8 @@
      * there are no matches.
      * @hide
      */
-    public ComponentName resolveSystemService(PackageManager pm, int flags) {
+    public @Nullable ComponentName resolveSystemService(@NonNull PackageManager pm,
+            @PackageManager.ComponentInfoFlags int flags) {
         if (mComponent != null) {
             return mComponent;
         }
@@ -7490,7 +7593,7 @@
      *
      * @see #getAction
      */
-    public Intent setAction(String action) {
+    public @NonNull Intent setAction(@Nullable String action) {
         mAction = action != null ? action.intern() : null;
         return this;
     }
@@ -7516,7 +7619,7 @@
      * @see #setDataAndNormalize
      * @see android.net.Uri#normalizeScheme()
      */
-    public Intent setData(Uri data) {
+    public @NonNull Intent setData(@Nullable Uri data) {
         mData = data;
         mType = null;
         return this;
@@ -7544,7 +7647,7 @@
      * @see #setType
      * @see android.net.Uri#normalizeScheme
      */
-    public Intent setDataAndNormalize(Uri data) {
+    public @NonNull Intent setDataAndNormalize(@NonNull Uri data) {
         return setData(data.normalizeScheme());
     }
 
@@ -7573,7 +7676,7 @@
      * @see #setDataAndType
      * @see #normalizeMimeType
      */
-    public Intent setType(String type) {
+    public @NonNull Intent setType(@Nullable String type) {
         mData = null;
         mType = type;
         return this;
@@ -7604,7 +7707,7 @@
      * @see #setData
      * @see #normalizeMimeType
      */
-    public Intent setTypeAndNormalize(String type) {
+    public @NonNull Intent setTypeAndNormalize(@Nullable String type) {
         return setType(normalizeMimeType(type));
     }
 
@@ -7633,7 +7736,7 @@
      * @see android.net.Uri#normalizeScheme
      * @see #setDataAndTypeAndNormalize
      */
-    public Intent setDataAndType(Uri data, String type) {
+    public @NonNull Intent setDataAndType(@Nullable Uri data, @Nullable String type) {
         mData = data;
         mType = type;
         return this;
@@ -7664,7 +7767,7 @@
      * @see #normalizeMimeType
      * @see android.net.Uri#normalizeScheme
      */
-    public Intent setDataAndTypeAndNormalize(Uri data, String type) {
+    public @NonNull Intent setDataAndTypeAndNormalize(@NonNull Uri data, @Nullable String type) {
         return setDataAndType(data.normalizeScheme(), normalizeMimeType(type));
     }
 
@@ -7684,7 +7787,7 @@
      * @see #hasCategory
      * @see #removeCategory
      */
-    public Intent addCategory(String category) {
+    public @NonNull Intent addCategory(String category) {
         if (mCategories == null) {
             mCategories = new ArraySet<String>();
         }
@@ -7739,7 +7842,7 @@
      * @param selector The desired selector Intent; set to null to not use
      * a special selector.
      */
-    public void setSelector(Intent selector) {
+    public void setSelector(@Nullable Intent selector) {
         if (selector == this) {
             throw new IllegalArgumentException(
                     "Intent being set as a selector of itself");
@@ -7778,7 +7881,7 @@
      *
      * @param clip The new clip to set.  May be null to clear the current clip.
      */
-    public void setClipData(ClipData clip) {
+    public void setClipData(@Nullable ClipData clip) {
         mClipData = clip;
     }
 
@@ -7811,7 +7914,7 @@
      * @see #removeExtra
      * @see #getBooleanExtra(String, boolean)
      */
-    public Intent putExtra(String name, boolean value) {
+    public @NonNull Intent putExtra(String name, boolean value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7834,7 +7937,7 @@
      * @see #removeExtra
      * @see #getByteExtra(String, byte)
      */
-    public Intent putExtra(String name, byte value) {
+    public @NonNull Intent putExtra(String name, byte value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7857,7 +7960,7 @@
      * @see #removeExtra
      * @see #getCharExtra(String, char)
      */
-    public Intent putExtra(String name, char value) {
+    public @NonNull Intent putExtra(String name, char value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7880,7 +7983,7 @@
      * @see #removeExtra
      * @see #getShortExtra(String, short)
      */
-    public Intent putExtra(String name, short value) {
+    public @NonNull Intent putExtra(String name, short value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7903,7 +8006,7 @@
      * @see #removeExtra
      * @see #getIntExtra(String, int)
      */
-    public Intent putExtra(String name, int value) {
+    public @NonNull Intent putExtra(String name, int value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7926,7 +8029,7 @@
      * @see #removeExtra
      * @see #getLongExtra(String, long)
      */
-    public Intent putExtra(String name, long value) {
+    public @NonNull Intent putExtra(String name, long value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7949,7 +8052,7 @@
      * @see #removeExtra
      * @see #getFloatExtra(String, float)
      */
-    public Intent putExtra(String name, float value) {
+    public @NonNull Intent putExtra(String name, float value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7972,7 +8075,7 @@
      * @see #removeExtra
      * @see #getDoubleExtra(String, double)
      */
-    public Intent putExtra(String name, double value) {
+    public @NonNull Intent putExtra(String name, double value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -7995,7 +8098,7 @@
      * @see #removeExtra
      * @see #getStringExtra(String)
      */
-    public Intent putExtra(String name, String value) {
+    public @NonNull Intent putExtra(String name, String value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8018,7 +8121,7 @@
      * @see #removeExtra
      * @see #getCharSequenceExtra(String)
      */
-    public Intent putExtra(String name, CharSequence value) {
+    public @NonNull Intent putExtra(String name, CharSequence value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8041,7 +8144,7 @@
      * @see #removeExtra
      * @see #getParcelableExtra(String)
      */
-    public Intent putExtra(String name, Parcelable value) {
+    public @NonNull Intent putExtra(String name, Parcelable value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8064,7 +8167,7 @@
      * @see #removeExtra
      * @see #getParcelableArrayExtra(String)
      */
-    public Intent putExtra(String name, Parcelable[] value) {
+    public @NonNull Intent putExtra(String name, Parcelable[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8087,7 +8190,8 @@
      * @see #removeExtra
      * @see #getParcelableArrayListExtra(String)
      */
-    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
+    public @NonNull Intent putParcelableArrayListExtra(String name,
+            ArrayList<? extends Parcelable> value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8110,7 +8214,7 @@
      * @see #removeExtra
      * @see #getIntegerArrayListExtra(String)
      */
-    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
+    public @NonNull Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8133,7 +8237,7 @@
      * @see #removeExtra
      * @see #getStringArrayListExtra(String)
      */
-    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
+    public @NonNull Intent putStringArrayListExtra(String name, ArrayList<String> value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8156,7 +8260,8 @@
      * @see #removeExtra
      * @see #getCharSequenceArrayListExtra(String)
      */
-    public Intent putCharSequenceArrayListExtra(String name, ArrayList<CharSequence> value) {
+    public @NonNull Intent putCharSequenceArrayListExtra(String name,
+            ArrayList<CharSequence> value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8179,7 +8284,7 @@
      * @see #removeExtra
      * @see #getSerializableExtra(String)
      */
-    public Intent putExtra(String name, Serializable value) {
+    public @NonNull Intent putExtra(String name, Serializable value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8202,7 +8307,7 @@
      * @see #removeExtra
      * @see #getBooleanArrayExtra(String)
      */
-    public Intent putExtra(String name, boolean[] value) {
+    public @NonNull Intent putExtra(String name, boolean[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8225,7 +8330,7 @@
      * @see #removeExtra
      * @see #getByteArrayExtra(String)
      */
-    public Intent putExtra(String name, byte[] value) {
+    public @NonNull Intent putExtra(String name, byte[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8248,7 +8353,7 @@
      * @see #removeExtra
      * @see #getShortArrayExtra(String)
      */
-    public Intent putExtra(String name, short[] value) {
+    public @NonNull Intent putExtra(String name, short[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8271,7 +8376,7 @@
      * @see #removeExtra
      * @see #getCharArrayExtra(String)
      */
-    public Intent putExtra(String name, char[] value) {
+    public @NonNull Intent putExtra(String name, char[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8294,7 +8399,7 @@
      * @see #removeExtra
      * @see #getIntArrayExtra(String)
      */
-    public Intent putExtra(String name, int[] value) {
+    public @NonNull Intent putExtra(String name, int[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8317,7 +8422,7 @@
      * @see #removeExtra
      * @see #getLongArrayExtra(String)
      */
-    public Intent putExtra(String name, long[] value) {
+    public @NonNull Intent putExtra(String name, long[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8340,7 +8445,7 @@
      * @see #removeExtra
      * @see #getFloatArrayExtra(String)
      */
-    public Intent putExtra(String name, float[] value) {
+    public @NonNull Intent putExtra(String name, float[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8363,7 +8468,7 @@
      * @see #removeExtra
      * @see #getDoubleArrayExtra(String)
      */
-    public Intent putExtra(String name, double[] value) {
+    public @NonNull Intent putExtra(String name, double[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8386,7 +8491,7 @@
      * @see #removeExtra
      * @see #getStringArrayExtra(String)
      */
-    public Intent putExtra(String name, String[] value) {
+    public @NonNull Intent putExtra(String name, String[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8409,7 +8514,7 @@
      * @see #removeExtra
      * @see #getCharSequenceArrayExtra(String)
      */
-    public Intent putExtra(String name, CharSequence[] value) {
+    public @NonNull Intent putExtra(String name, CharSequence[] value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8432,7 +8537,7 @@
      * @see #removeExtra
      * @see #getBundleExtra(String)
      */
-    public Intent putExtra(String name, Bundle value) {
+    public @NonNull Intent putExtra(String name, Bundle value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8459,7 +8564,7 @@
      * @hide
      */
     @Deprecated
-    public Intent putExtra(String name, IBinder value) {
+    public @NonNull Intent putExtra(String name, IBinder value) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8474,7 +8579,7 @@
      *
      * @see #putExtra
      */
-    public Intent putExtras(Intent src) {
+    public @NonNull Intent putExtras(@NonNull Intent src) {
         if (src.mExtras != null) {
             if (mExtras == null) {
                 mExtras = new Bundle(src.mExtras);
@@ -8495,7 +8600,7 @@
      * @see #putExtra
      * @see #removeExtra
      */
-    public Intent putExtras(Bundle extras) {
+    public @NonNull Intent putExtras(@NonNull Bundle extras) {
         if (mExtras == null) {
             mExtras = new Bundle();
         }
@@ -8510,7 +8615,7 @@
      * @param src The exact extras contained in this Intent are copied
      * into the target intent, replacing any that were previously there.
      */
-    public Intent replaceExtras(Intent src) {
+    public @NonNull Intent replaceExtras(@NonNull Intent src) {
         mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
         return this;
     }
@@ -8522,7 +8627,7 @@
      * @param extras The new set of extras in the Intent, or null to erase
      * all extras.
      */
-    public Intent replaceExtras(Bundle extras) {
+    public @NonNull Intent replaceExtras(@NonNull Bundle extras) {
         mExtras = extras != null ? new Bundle(extras) : null;
         return this;
     }
@@ -8555,41 +8660,13 @@
      * the behavior of your application.
      *
      * @param flags The desired flags.
-     *
      * @return Returns the same Intent object, for chaining multiple calls
      * into a single statement.
-     *
      * @see #getFlags
      * @see #addFlags
      * @see #removeFlags
-     *
-     * @see #FLAG_GRANT_READ_URI_PERMISSION
-     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
-     * @see #FLAG_GRANT_PERSISTABLE_URI_PERMISSION
-     * @see #FLAG_GRANT_PREFIX_URI_PERMISSION
-     * @see #FLAG_DEBUG_LOG_RESOLUTION
-     * @see #FLAG_FROM_BACKGROUND
-     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
-     * @see #FLAG_ACTIVITY_CLEAR_TASK
-     * @see #FLAG_ACTIVITY_CLEAR_TOP
-     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
-     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
-     * @see #FLAG_ACTIVITY_FORWARD_RESULT
-     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
-     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
-     * @see #FLAG_ACTIVITY_NEW_DOCUMENT
-     * @see #FLAG_ACTIVITY_NEW_TASK
-     * @see #FLAG_ACTIVITY_NO_ANIMATION
-     * @see #FLAG_ACTIVITY_NO_HISTORY
-     * @see #FLAG_ACTIVITY_NO_USER_ACTION
-     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
-     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
-     * @see #FLAG_ACTIVITY_REORDER_TO_FRONT
-     * @see #FLAG_ACTIVITY_SINGLE_TOP
-     * @see #FLAG_ACTIVITY_TASK_ON_HOME
-     * @see #FLAG_RECEIVER_REGISTERED_ONLY
      */
-    public Intent setFlags(int flags) {
+    public @NonNull Intent setFlags(@Flags int flags) {
         mFlags = flags;
         return this;
     }
@@ -8600,36 +8677,11 @@
      * @param flags The new flags to set.
      * @return Returns the same Intent object, for chaining multiple calls into
      *         a single statement.
-     * @see #setFlags(int)
-     * @see #removeFlags(int)
-     *
-     * @see #FLAG_GRANT_READ_URI_PERMISSION
-     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
-     * @see #FLAG_GRANT_PERSISTABLE_URI_PERMISSION
-     * @see #FLAG_GRANT_PREFIX_URI_PERMISSION
-     * @see #FLAG_DEBUG_LOG_RESOLUTION
-     * @see #FLAG_FROM_BACKGROUND
-     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
-     * @see #FLAG_ACTIVITY_CLEAR_TASK
-     * @see #FLAG_ACTIVITY_CLEAR_TOP
-     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
-     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
-     * @see #FLAG_ACTIVITY_FORWARD_RESULT
-     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
-     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
-     * @see #FLAG_ACTIVITY_NEW_DOCUMENT
-     * @see #FLAG_ACTIVITY_NEW_TASK
-     * @see #FLAG_ACTIVITY_NO_ANIMATION
-     * @see #FLAG_ACTIVITY_NO_HISTORY
-     * @see #FLAG_ACTIVITY_NO_USER_ACTION
-     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
-     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
-     * @see #FLAG_ACTIVITY_REORDER_TO_FRONT
-     * @see #FLAG_ACTIVITY_SINGLE_TOP
-     * @see #FLAG_ACTIVITY_TASK_ON_HOME
-     * @see #FLAG_RECEIVER_REGISTERED_ONLY
+     * @see #setFlags
+     * @see #getFlags
+     * @see #removeFlags
      */
-    public Intent addFlags(int flags) {
+    public @NonNull Intent addFlags(@Flags int flags) {
         mFlags |= flags;
         return this;
     }
@@ -8638,36 +8690,11 @@
      * Remove these flags from the intent.
      *
      * @param flags The flags to remove.
-     * @see #setFlags(int)
-     * @see #addFlags(int)
-     *
-     * @see #FLAG_GRANT_READ_URI_PERMISSION
-     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
-     * @see #FLAG_GRANT_PERSISTABLE_URI_PERMISSION
-     * @see #FLAG_GRANT_PREFIX_URI_PERMISSION
-     * @see #FLAG_DEBUG_LOG_RESOLUTION
-     * @see #FLAG_FROM_BACKGROUND
-     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
-     * @see #FLAG_ACTIVITY_CLEAR_TASK
-     * @see #FLAG_ACTIVITY_CLEAR_TOP
-     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
-     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
-     * @see #FLAG_ACTIVITY_FORWARD_RESULT
-     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
-     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
-     * @see #FLAG_ACTIVITY_NEW_DOCUMENT
-     * @see #FLAG_ACTIVITY_NEW_TASK
-     * @see #FLAG_ACTIVITY_NO_ANIMATION
-     * @see #FLAG_ACTIVITY_NO_HISTORY
-     * @see #FLAG_ACTIVITY_NO_USER_ACTION
-     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
-     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
-     * @see #FLAG_ACTIVITY_REORDER_TO_FRONT
-     * @see #FLAG_ACTIVITY_SINGLE_TOP
-     * @see #FLAG_ACTIVITY_TASK_ON_HOME
-     * @see #FLAG_RECEIVER_REGISTERED_ONLY
+     * @see #setFlags
+     * @see #getFlags
+     * @see #addFlags
      */
-    public void removeFlags(int flags) {
+    public void removeFlags(@Flags int flags) {
         mFlags &= ~flags;
     }
 
@@ -8687,7 +8714,7 @@
      * @see #getPackage
      * @see #resolveActivity
      */
-    public Intent setPackage(String packageName) {
+    public @NonNull Intent setPackage(@Nullable String packageName) {
         if (packageName != null && mSelector != null) {
             throw new IllegalArgumentException(
                     "Can't set package name when selector is already set");
@@ -8719,7 +8746,7 @@
      * @see #getComponent
      * @see #resolveActivity
      */
-    public Intent setComponent(ComponentName component) {
+    public @NonNull Intent setComponent(@Nullable ComponentName component) {
         mComponent = component;
         return this;
     }
@@ -8739,7 +8766,8 @@
      * @see #setComponent
      * @see #setClass
      */
-    public Intent setClassName(Context packageContext, String className) {
+    public @NonNull Intent setClassName(@NonNull Context packageContext,
+            @NonNull String className) {
         mComponent = new ComponentName(packageContext, className);
         return this;
     }
@@ -8759,7 +8787,7 @@
      * @see #setComponent
      * @see #setClass
      */
-    public Intent setClassName(String packageName, String className) {
+    public @NonNull Intent setClassName(@NonNull String packageName, @NonNull String className) {
         mComponent = new ComponentName(packageName, className);
         return this;
     }
@@ -8778,7 +8806,7 @@
      *
      * @see #setComponent
      */
-    public Intent setClass(Context packageContext, Class<?> cls) {
+    public @NonNull Intent setClass(@NonNull Context packageContext, @NonNull Class<?> cls) {
         mComponent = new ComponentName(packageContext, cls);
         return this;
     }
@@ -8788,7 +8816,7 @@
      * used as a hint to the receiver for animations and the like.  Null means that there
      * is no source bounds.
      */
-    public void setSourceBounds(Rect r) {
+    public void setSourceBounds(@Nullable Rect r) {
         if (r != null) {
             mSourceBounds = new Rect(r);
         } else {
@@ -8909,7 +8937,7 @@
      * changed.
      */
     @FillInFlags
-    public int fillIn(Intent other, @FillInFlags int flags) {
+    public int fillIn(@NonNull Intent other, @FillInFlags int flags) {
         int changes = 0;
         boolean mayHaveCopiedUris = false;
         if (other.mAction != null
@@ -9257,13 +9285,12 @@
      * <p>You can convert the returned string back to an Intent with
      * {@link #getIntent}.
      *
-     * @param flags Additional operating flags.  Either 0,
-     * {@link #URI_INTENT_SCHEME}, or {@link #URI_ANDROID_APP_SCHEME}.
+     * @param flags Additional operating flags.
      *
      * @return Returns a URI encoding URI string describing the entire contents
      * of the Intent.
      */
-    public String toUri(int flags) {
+    public String toUri(@UriFlags int flags) {
         StringBuilder uri = new StringBuilder(128);
         if ((flags&URI_ANDROID_APP_SCHEME) != 0) {
             if (mPackage == null) {
@@ -9530,7 +9557,8 @@
      * @throws XmlPullParserException If there was an XML parsing error.
      * @throws IOException If there was an I/O error.
      */
-    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
+    public static @NonNull Intent parseIntent(@NonNull Resources resources,
+            @NonNull XmlPullParser parser, AttributeSet attrs)
             throws XmlPullParserException, IOException {
         Intent intent = new Intent();
 
@@ -9677,7 +9705,7 @@
      * @see #setType
      * @see #setTypeAndNormalize
      */
-    public static String normalizeMimeType(String type) {
+    public static @Nullable String normalizeMimeType(@Nullable String type) {
         if (type == null) {
             return null;
         }
diff --git a/core/java/android/content/pm/PackageManager.java b/core/java/android/content/pm/PackageManager.java
index 47d79cf..ecaf7eb 100644
--- a/core/java/android/content/pm/PackageManager.java
+++ b/core/java/android/content/pm/PackageManager.java
@@ -522,6 +522,18 @@
      */
     public static final int PERMISSION_DENIED = -1;
 
+    /** @hide */
+    @IntDef(prefix = { "SIGNATURE_" }, value = {
+            SIGNATURE_MATCH,
+            SIGNATURE_NEITHER_SIGNED,
+            SIGNATURE_FIRST_NOT_SIGNED,
+            SIGNATURE_SECOND_NOT_SIGNED,
+            SIGNATURE_NO_MATCH,
+            SIGNATURE_UNKNOWN_PACKAGE,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface SignatureResult {}
+
     /**
      * Signature check result: this is returned by {@link #checkSignatures}
      * if all signatures on the two packages match.
@@ -558,11 +570,25 @@
      */
     public static final int SIGNATURE_UNKNOWN_PACKAGE = -4;
 
+    /** @hide */
+    @IntDef(prefix = { "COMPONENT_ENABLED_STATE_" }, value = {
+            COMPONENT_ENABLED_STATE_DEFAULT,
+            COMPONENT_ENABLED_STATE_ENABLED,
+            COMPONENT_ENABLED_STATE_DISABLED,
+            COMPONENT_ENABLED_STATE_DISABLED_USER,
+            COMPONENT_ENABLED_STATE_DISABLED_UNTIL_USED,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface EnabledState {}
+
     /**
-     * Flag for {@link #setApplicationEnabledSetting(String, int, int)}
-     * and {@link #setComponentEnabledSetting(ComponentName, int, int)}: This
-     * component or application is in its default enabled state (as specified
-     * in its manifest).
+     * Flag for {@link #setApplicationEnabledSetting(String, int, int)} and
+     * {@link #setComponentEnabledSetting(ComponentName, int, int)}: This
+     * component or application is in its default enabled state (as specified in
+     * its manifest).
+     * <p>
+     * Explicitly setting the component state to this value restores it's
+     * enabled state to whatever is set in the manifest.
      */
     public static final int COMPONENT_ENABLED_STATE_DEFAULT = 0;
 
@@ -764,6 +790,13 @@
      */
     public static final int INSTALL_ALLOCATE_AGGRESSIVE = 0x00008000;
 
+    /** @hide */
+    @IntDef(flag = true, prefix = { "DONT_KILL_APP" }, value = {
+            DONT_KILL_APP
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface EnabledFlags {}
+
     /**
      * Flag parameter for
      * {@link #setComponentEnabledSetting(android.content.ComponentName, int, int)} to indicate
@@ -2871,7 +2904,7 @@
      * does not contain such an activity, or if <em>packageName</em> is not
      * recognized.
      */
-    public abstract Intent getLaunchIntentForPackage(String packageName);
+    public abstract @Nullable Intent getLaunchIntentForPackage(@NonNull String packageName);
 
     /**
      * Return a "good" intent to launch a front-door Leanback activity in a
@@ -2885,7 +2918,7 @@
      *         the main Leanback activity in the package, or null if the package
      *         does not contain such an activity.
      */
-    public abstract Intent getLeanbackLaunchIntentForPackage(String packageName);
+    public abstract @Nullable Intent getLeanbackLaunchIntentForPackage(@NonNull String packageName);
 
     /**
      * Return an array of all of the POSIX secondary group IDs that have been
@@ -2901,7 +2934,7 @@
      * @throws NameNotFoundException if a package with the given name cannot be
      *             found on the system.
      */
-    public abstract int[] getPackageGids(String packageName)
+    public abstract int[] getPackageGids(@NonNull String packageName)
             throws NameNotFoundException;
 
     /**
@@ -3189,7 +3222,7 @@
      * @see #PERMISSION_DENIED
      */
     @CheckResult
-    public abstract int checkPermission(String permName, String pkgName);
+    public abstract @PermissionResult int checkPermission(String permName, String pkgName);
 
     /**
      * Checks whether a particular permissions has been revoked for a
@@ -3419,12 +3452,9 @@
      * #SIGNATURE_NO_MATCH} or {@link #SIGNATURE_UNKNOWN_PACKAGE}).
      *
      * @see #checkSignatures(int, int)
-     * @see #SIGNATURE_MATCH
-     * @see #SIGNATURE_NO_MATCH
-     * @see #SIGNATURE_UNKNOWN_PACKAGE
      */
     @CheckResult
-    public abstract int checkSignatures(String pkg1, String pkg2);
+    public abstract @SignatureResult int checkSignatures(String pkg1, String pkg2);
 
     /**
      * Like {@link #checkSignatures(String, String)}, but takes UIDs of
@@ -3442,12 +3472,9 @@
      * #SIGNATURE_NO_MATCH} or {@link #SIGNATURE_UNKNOWN_PACKAGE}).
      *
      * @see #checkSignatures(String, String)
-     * @see #SIGNATURE_MATCH
-     * @see #SIGNATURE_NO_MATCH
-     * @see #SIGNATURE_UNKNOWN_PACKAGE
      */
     @CheckResult
-    public abstract int checkSignatures(int uid1, int uid2);
+    public abstract @SignatureResult int checkSignatures(int uid1, int uid2);
 
     /**
      * Retrieve the names of all packages that are associated with a particular
@@ -3881,8 +3908,8 @@
      *         included by one of the <var>specifics</var> intents. If there are
      *         no matching activities, an empty list is returned.
      */
-    public abstract List<ResolveInfo> queryIntentActivityOptions(
-            ComponentName caller, Intent[] specifics, Intent intent, @ResolveInfoFlags int flags);
+    public abstract List<ResolveInfo> queryIntentActivityOptions(@Nullable ComponentName caller,
+            @Nullable Intent[] specifics, Intent intent, @ResolveInfoFlags int flags);
 
     /**
      * Retrieve all receivers that can handle a broadcast of the given intent.
@@ -5136,18 +5163,11 @@
      * manifest.
      *
      * @param componentName The component to enable
-     * @param newState The new enabled state for the component.  The legal values for this state
-     *                 are:
-     *                   {@link #COMPONENT_ENABLED_STATE_ENABLED},
-     *                   {@link #COMPONENT_ENABLED_STATE_DISABLED}
-     *                   and
-     *                   {@link #COMPONENT_ENABLED_STATE_DEFAULT}
-     *                 The last one removes the setting, thereby restoring the component's state to
-     *                 whatever was set in it's manifest (or enabled, by default).
-     * @param flags Optional behavior flags: {@link #DONT_KILL_APP} or 0.
+     * @param newState The new enabled state for the component.
+     * @param flags Optional behavior flags.
      */
     public abstract void setComponentEnabledSetting(ComponentName componentName,
-            int newState, int flags);
+            @EnabledState int newState, @EnabledFlags int flags);
 
     /**
      * Return the enabled setting for a package component (activity,
@@ -5157,14 +5177,10 @@
      * the value originally specified in the manifest has not been modified.
      *
      * @param componentName The component to retrieve.
-     * @return Returns the current enabled state for the component.  May
-     * be one of {@link #COMPONENT_ENABLED_STATE_ENABLED},
-     * {@link #COMPONENT_ENABLED_STATE_DISABLED}, or
-     * {@link #COMPONENT_ENABLED_STATE_DEFAULT}.  The last one means the
-     * component's enabled state is based on the original information in
-     * the manifest as found in {@link ComponentInfo}.
+     * @return Returns the current enabled state for the component.
      */
-    public abstract int getComponentEnabledSetting(ComponentName componentName);
+    public abstract @EnabledState int getComponentEnabledSetting(
+            ComponentName componentName);
 
     /**
      * Set the enabled setting for an application
@@ -5174,18 +5190,11 @@
      * {@link #setComponentEnabledSetting} for any of the application's components.
      *
      * @param packageName The package name of the application to enable
-     * @param newState The new enabled state for the component.  The legal values for this state
-     *                 are:
-     *                   {@link #COMPONENT_ENABLED_STATE_ENABLED},
-     *                   {@link #COMPONENT_ENABLED_STATE_DISABLED}
-     *                   and
-     *                   {@link #COMPONENT_ENABLED_STATE_DEFAULT}
-     *                 The last one removes the setting, thereby restoring the applications's state to
-     *                 whatever was set in its manifest (or enabled, by default).
-     * @param flags Optional behavior flags: {@link #DONT_KILL_APP} or 0.
+     * @param newState The new enabled state for the application.
+     * @param flags Optional behavior flags.
      */
     public abstract void setApplicationEnabledSetting(String packageName,
-            int newState, int flags);
+            @EnabledState int newState, @EnabledFlags int flags);
 
     /**
      * Return the enabled setting for an application. This returns
@@ -5195,15 +5204,10 @@
      * the value originally specified in the manifest has not been modified.
      *
      * @param packageName The package name of the application to retrieve.
-     * @return Returns the current enabled state for the application.  May
-     * be one of {@link #COMPONENT_ENABLED_STATE_ENABLED},
-     * {@link #COMPONENT_ENABLED_STATE_DISABLED}, or
-     * {@link #COMPONENT_ENABLED_STATE_DEFAULT}.  The last one means the
-     * application's enabled state is based on the original information in
-     * the manifest as found in {@link ApplicationInfo}.
+     * @return Returns the current enabled state for the application.
      * @throws IllegalArgumentException if the named package does not exist.
      */
-    public abstract int getApplicationEnabledSetting(String packageName);
+    public abstract @EnabledState int getApplicationEnabledSetting(String packageName);
 
     /**
      * Flush the package restrictions for a given user to disk. This forces the package restrictions
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 768beea..b854cbf 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -19,6 +19,7 @@
 
 import android.annotation.IntDef;
 import android.annotation.Nullable;
+import android.annotation.RequiresPermission;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
@@ -742,8 +743,6 @@
 
     /**
      * Retrieves the current preferred network type.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an integer representing the preferred network type
      *
@@ -753,6 +752,7 @@
      *             the networks to describe their precedence.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public int getNetworkPreference() {
         return TYPE_NONE;
     }
@@ -763,12 +763,11 @@
      * You should always check {@link NetworkInfo#isConnected()} before initiating
      * network traffic. This may return {@code null} when there is no default
      * network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a {@link NetworkInfo} object for the current default network
      *        or {@code null} if no default network is currently active
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo getActiveNetworkInfo() {
         try {
             return mService.getActiveNetworkInfo();
@@ -783,12 +782,11 @@
      * network disconnects, the returned {@code Network} object will no longer
      * be usable.  This will return {@code null} when there is no default
      * network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a {@link Network} object for the current default network or
      *        {@code null} if no default network is currently active
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public Network getActiveNetwork() {
         try {
             return mService.getActiveNetwork();
@@ -803,14 +801,13 @@
      * network disconnects, the returned {@code Network} object will no longer
      * be usable.  This will return {@code null} when there is no default
      * network for the UID.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
      *
      * @return a {@link Network} object for the current default network for the
      *         given UID or {@code null} if no default network is currently active
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public Network getActiveNetworkForUid(int uid) {
         return getActiveNetworkForUid(uid, false);
     }
@@ -871,8 +868,6 @@
      * Returns details about the currently active default data network
      * for a given uid.  This is for internal use only to avoid spying
      * other apps.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
      *
      * @return a {@link NetworkInfo} object for the current default network
      *        for the given uid or {@code null} if no default network is
@@ -880,6 +875,7 @@
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public NetworkInfo getActiveNetworkInfoForUid(int uid) {
         return getActiveNetworkInfoForUid(uid, false);
     }
@@ -896,8 +892,6 @@
     /**
      * Returns connection status information about a particular
      * network type.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkType integer specifying which networkType in
      *        which you're interested.
@@ -910,6 +904,7 @@
      *             {@link #getNetworkInfo(android.net.Network)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo getNetworkInfo(int networkType) {
         try {
             return mService.getNetworkInfo(networkType);
@@ -921,8 +916,6 @@
     /**
      * Returns connection status information about a particular
      * Network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network {@link Network} specifying which network
      *        in which you're interested.
@@ -930,6 +923,7 @@
      *        network or {@code null} if the {@code Network}
      *        is not valid.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo getNetworkInfo(Network network) {
         return getNetworkInfoForUid(network, Process.myUid(), false);
     }
@@ -946,8 +940,6 @@
     /**
      * Returns connection status information about all network
      * types supported by the device.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of {@link NetworkInfo} objects.  Check each
      * {@link NetworkInfo#getType} for which type each applies.
@@ -957,6 +949,7 @@
      *             {@link #getNetworkInfo(android.net.Network)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkInfo[] getAllNetworkInfo() {
         try {
             return mService.getAllNetworkInfo();
@@ -969,15 +962,13 @@
      * Returns the {@link Network} object currently serving a given type, or
      * null if the given type is not connected.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
-     *
      * @hide
      * @deprecated This method does not support multiple connected networks
      *             of the same type. Use {@link #getAllNetworks} and
      *             {@link #getNetworkInfo(android.net.Network)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public Network getNetworkForType(int networkType) {
         try {
             return mService.getNetworkForType(networkType);
@@ -989,11 +980,10 @@
     /**
      * Returns an array of all {@link Network} currently tracked by the
      * framework.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of {@link Network} objects.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public Network[] getAllNetworks() {
         try {
             return mService.getAllNetworks();
@@ -1017,8 +1007,6 @@
 
     /**
      * Returns the IP information for the current default network.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a {@link LinkProperties} object describing the IP info
      *        for the current default network, or {@code null} if there
@@ -1026,6 +1014,7 @@
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public LinkProperties getActiveLinkProperties() {
         try {
             return mService.getActiveLinkProperties();
@@ -1036,8 +1025,6 @@
 
     /**
      * Returns the IP information for a given network type.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkType the network type of interest.
      * @return a {@link LinkProperties} object describing the IP info
@@ -1051,6 +1038,7 @@
      *             {@link #getLinkProperties(android.net.Network)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public LinkProperties getLinkProperties(int networkType) {
         try {
             return mService.getLinkPropertiesForType(networkType);
@@ -1062,12 +1050,11 @@
     /**
      * Get the {@link LinkProperties} for the given {@link Network}.  This
      * will return {@code null} if the network is unknown.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network The {@link Network} object identifying the network in question.
      * @return The {@link LinkProperties} for the network, or {@code null}.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public LinkProperties getLinkProperties(Network network) {
         try {
             return mService.getLinkProperties(network);
@@ -1079,12 +1066,11 @@
     /**
      * Get the {@link android.net.NetworkCapabilities} for the given {@link Network}.  This
      * will return {@code null} if the network is unknown.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network The {@link Network} object identifying the network in question.
      * @return The {@link android.net.NetworkCapabilities} for the network, or {@code null}.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkCapabilities getNetworkCapabilities(Network network) {
         try {
             return mService.getNetworkCapabilities(network);
@@ -1727,11 +1713,9 @@
      * network is active. Quota status can change rapidly, so these values
      * shouldn't be cached.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
-     *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
         try {
             return mService.getActiveNetworkQuotaInfo();
@@ -1929,13 +1913,12 @@
     /**
      * Get the set of tetherable, available interfaces.  This list is limited by
      * device configuration and current interface existence.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more Strings of tetherable interface names.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableIfaces() {
         try {
             return mService.getTetherableIfaces();
@@ -1946,13 +1929,12 @@
 
     /**
      * Get the set of tethered interfaces.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more String of currently tethered interface names.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetheredIfaces() {
         try {
             return mService.getTetheredIfaces();
@@ -1968,14 +1950,13 @@
      * may cause them to reset to the available state.
      * {@link ConnectivityManager#getLastTetherError} can be used to get more
      * information on the cause of the errors.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more String indicating the interface names
      *        which failed to tether.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetheringErroredIfaces() {
         try {
             return mService.getTetheringErroredIfaces();
@@ -2060,14 +2041,13 @@
      * Check if the device allows for tethering.  It may be disabled via
      * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or
      * due to device configuration.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return a boolean - {@code true} indicating Tethering is supported.
      *
      * {@hide}
      */
     @SystemApi
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public boolean isTetheringSupported() {
         try {
             return mService.isTetheringSupported();
@@ -2171,14 +2151,13 @@
      * Get the list of regular expressions that define any tetherable
      * USB network interfaces.  If USB tethering is not supported by the
      * device, this list should be empty.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more regular expression Strings defining
      *        what interfaces are considered tetherable usb interfaces.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableUsbRegexs() {
         try {
             return mService.getTetherableUsbRegexs();
@@ -2191,14 +2170,13 @@
      * Get the list of regular expressions that define any tetherable
      * Wifi network interfaces.  If Wifi tethering is not supported by the
      * device, this list should be empty.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more regular expression Strings defining
      *        what interfaces are considered tetherable wifi interfaces.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableWifiRegexs() {
         try {
             return mService.getTetherableWifiRegexs();
@@ -2211,14 +2189,13 @@
      * Get the list of regular expressions that define any tetherable
      * Bluetooth network interfaces.  If Bluetooth tethering is not supported by the
      * device, this list should be empty.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return an array of 0 or more regular expression Strings defining
      *        what interfaces are considered tetherable bluetooth interfaces.
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public String[] getTetherableBluetoothRegexs() {
         try {
             return mService.getTetherableBluetoothRegexs();
@@ -2280,8 +2257,6 @@
     /**
      * Get a more detailed error code after a Tethering or Untethering
      * request asynchronously failed.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param iface The name of the interface of interest
      * @return error The error code of the last error tethering or untethering the named
@@ -2289,6 +2264,7 @@
      *
      * {@hide}
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public int getLastTetherError(String iface) {
         try {
             return mService.getLastTetherError(iface);
@@ -2362,13 +2338,12 @@
      * for typical HTTP proxies - they are general network dependent.  However if you're
      * doing something unusual like general internal filtering this may be useful.  On
      * a private network where the proxy is not accessible, you may break HTTP using this.
-     * <p>This method requires the caller to hold the permission
-     * android.Manifest.permission#CONNECTIVITY_INTERNAL.
      *
      * @param p A {@link ProxyInfo} object defining the new global
      *        HTTP proxy.  A {@code null} value will clear the global HTTP proxy.
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setGlobalProxy(ProxyInfo p) {
         try {
             mService.setGlobalProxy(p);
@@ -2434,14 +2409,13 @@
      * hardware supports it.  For example a GSM phone without a SIM
      * should still return {@code true} for mobile data, but a wifi only
      * tablet would return {@code false}.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkType The network type we'd like to check
      * @return {@code true} if supported, else {@code false}
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public boolean isNetworkSupported(int networkType) {
         try {
             return mService.isNetworkSupported(networkType);
@@ -2457,12 +2431,11 @@
      * battery/performance issues. You should check this before doing large
      * data transfers, and warn the user or delay the operation until another
      * network is available.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @return {@code true} if large transfers should be avoided, otherwise
      *        {@code false}.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public boolean isActiveNetworkMetered() {
         try {
             return mService.isActiveNetworkMetered();
@@ -2541,13 +2514,12 @@
 
     /**
      * Set the value for enabling/disabling airplane mode
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
      *
      * @param enable whether to enable airplane mode or not
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setAirplaneMode(boolean enable) {
         try {
             mService.setAirplaneMode(enable);
@@ -3225,14 +3197,13 @@
      * Registers to receive notifications about all networks which satisfy the given
      * {@link NetworkRequest}.  The callbacks will continue to be called until
      * either the application exits or link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param request {@link NetworkRequest} describing this request.
      * @param networkCallback The {@link NetworkCallback} that the system will call as suitable
      *                        networks change state.
      *                        The callback is invoked on the default internal Handler.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerNetworkCallback(NetworkRequest request, NetworkCallback networkCallback) {
         registerNetworkCallback(request, networkCallback, getDefaultHandler());
     }
@@ -3241,14 +3212,13 @@
      * Registers to receive notifications about all networks which satisfy the given
      * {@link NetworkRequest}.  The callbacks will continue to be called until
      * either the application exits or link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param request {@link NetworkRequest} describing this request.
      * @param networkCallback The {@link NetworkCallback} that the system will call as suitable
      *                        networks change state.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerNetworkCallback(
             NetworkRequest request, NetworkCallback networkCallback, Handler handler) {
         CallbackHandler cbHandler = new CallbackHandler(handler);
@@ -3280,13 +3250,12 @@
      * <p>
      * The request may be released normally by calling
      * {@link #unregisterNetworkCallback(android.app.PendingIntent)}.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      * @param request {@link NetworkRequest} describing this request.
      * @param operation Action to perform when the network is available (corresponds
      *                  to the {@link NetworkCallback#onAvailable} call.  Typically
      *                  comes from {@link PendingIntent#getBroadcast}. Cannot be null.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerNetworkCallback(NetworkRequest request, PendingIntent operation) {
         checkPendingIntent(operation);
         try {
@@ -3300,13 +3269,12 @@
      * Registers to receive notifications about changes in the system default network. The callbacks
      * will continue to be called until either the application exits or
      * {@link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkCallback The {@link NetworkCallback} that the system will call as the
      *                        system default network changes.
      *                        The callback is invoked on the default internal Handler.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerDefaultNetworkCallback(NetworkCallback networkCallback) {
         registerDefaultNetworkCallback(networkCallback, getDefaultHandler());
     }
@@ -3315,13 +3283,12 @@
      * Registers to receive notifications about changes in the system default network. The callbacks
      * will continue to be called until either the application exits or
      * {@link #unregisterNetworkCallback(NetworkCallback)} is called.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param networkCallback The {@link NetworkCallback} that the system will call as the
      *                        system default network changes.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public void registerDefaultNetworkCallback(NetworkCallback networkCallback, Handler handler) {
         // This works because if the NetworkCapabilities are null,
         // ConnectivityService takes them from the default request.
@@ -3398,15 +3365,13 @@
      * {@code always} is true, then the choice is remembered, so that the next time the user
      * connects to this network, the system will switch to it.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
-     *
      * @param network The network to accept.
      * @param accept Whether to accept the network even if unvalidated.
      * @param always Whether to remember this choice in the future.
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setAcceptUnvalidated(Network network, boolean accept, boolean always) {
         try {
             mService.setAcceptUnvalidated(network, accept, always);
@@ -3421,13 +3386,11 @@
      * {@code config_networkAvoidBadWifi} configuration variable is set to 0 and the {@code
      * NETWORK_AVOID_BAD_WIFI setting is unset}.
      *
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
-     *
      * @param network The network to accept.
      *
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL)
     public void setAvoidUnvalidated(Network network) {
         try {
             mService.setAvoidUnvalidated(network);
@@ -3488,15 +3451,13 @@
      * for multipath data transfer on this network when it is not the system default network.
      * Applications desiring to use multipath network protocols should call this method before
      * each such operation.
-     * <p>
-     * This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
      *
      * @param network The network on which the application desires to use multipath data.
      *                If {@code null}, this method will return the a preference that will generally
      *                apply to metered networks.
      * @return a bitwise OR of zero or more of the  {@code MULTIPATH_PREFERENCE_*} constants.
      */
+    @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
     public @MultipathPreference int getMultipathPreference(Network network) {
         try {
             return mService.getMultipathPreference(network);
diff --git a/core/java/android/os/Parcelable.java b/core/java/android/os/Parcelable.java
index c10abec..6632ca5 100644
--- a/core/java/android/os/Parcelable.java
+++ b/core/java/android/os/Parcelable.java
@@ -16,6 +16,11 @@
 
 package android.os;
 
+import android.annotation.IntDef;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
  * Interface for classes whose instances can be written to
  * and restored from a {@link Parcel}.  Classes implementing the Parcelable
@@ -53,6 +58,14 @@
  * }</pre>
  */
 public interface Parcelable {
+    /** @hide */
+    @IntDef(flag = true, prefix = { "PARCELABLE_" }, value = {
+            PARCELABLE_WRITE_RETURN_VALUE,
+            PARCELABLE_ELIDE_DUPLICATES,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface WriteFlags {}
+
     /**
      * Flag for use with {@link #writeToParcel}: the object being written
      * is a return value, that is the result of a function such as
@@ -79,6 +92,13 @@
      * marshalled.
      */
 
+    /** @hide */
+    @IntDef(flag = true, prefix = { "CONTENTS_" }, value = {
+            CONTENTS_FILE_DESCRIPTOR,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface ContentsFlags {}
+
     /**
      * Descriptor bit used with {@link #describeContents()}: indicates that
      * the Parcelable object's flattened representation includes a file descriptor.
@@ -96,10 +116,8 @@
      *  
      * @return a bitmask indicating the set of special object types marshaled
      * by this Parcelable object instance.
-     *
-     * @see #CONTENTS_FILE_DESCRIPTOR
      */
-    public int describeContents();
+    public @ContentsFlags int describeContents();
     
     /**
      * Flatten this object in to a Parcel.
@@ -108,7 +126,7 @@
      * @param flags Additional flags about how the object should be written.
      * May be 0 or {@link #PARCELABLE_WRITE_RETURN_VALUE}.
      */
-    public void writeToParcel(Parcel dest, int flags);
+    public void writeToParcel(Parcel dest, @WriteFlags int flags);
 
     /**
      * Interface that must be implemented and provided as a public CREATOR
diff --git a/core/java/android/os/Vibrator.java b/core/java/android/os/Vibrator.java
index c6bbf48..1e55c78 100644
--- a/core/java/android/os/Vibrator.java
+++ b/core/java/android/os/Vibrator.java
@@ -16,6 +16,7 @@
 
 package android.os;
 
+import android.annotation.RequiresPermission;
 import android.app.ActivityThread;
 import android.content.Context;
 import android.media.AudioAttributes;
@@ -65,22 +66,19 @@
 
     /**
      * Vibrate constantly for the specified period of time.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#VIBRATE}.
      *
      * @param milliseconds The number of milliseconds to vibrate.
      *
      * @deprecated Use {@link #vibrate(VibrationEffect)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public void vibrate(long milliseconds) {
         vibrate(milliseconds, null);
     }
 
     /**
      * Vibrate constantly for the specified period of time.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#VIBRATE}.
      *
      * @param milliseconds The number of milliseconds to vibrate.
      * @param attributes {@link AudioAttributes} corresponding to the vibration. For example,
@@ -91,6 +89,7 @@
      * @deprecated Use {@link #vibrate(VibrationEffect, AudioAttributes)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public void vibrate(long milliseconds, AudioAttributes attributes) {
         try {
             // This ignores all exceptions to stay compatible with pre-O implementations.
@@ -115,8 +114,6 @@
      * To cause the pattern to repeat, pass the index into the pattern array at which
      * to start the repeat, or -1 to disable repeating.
      * </p>
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#VIBRATE}.
      *
      * @param pattern an array of longs of times for which to turn the vibrator on or off.
      * @param repeat the index into pattern at which to repeat, or -1 if
@@ -125,6 +122,7 @@
      * @deprecated Use {@link #vibrate(VibrationEffect)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public void vibrate(long[] pattern, int repeat) {
         vibrate(pattern, repeat, null);
     }
@@ -142,8 +140,6 @@
      * To cause the pattern to repeat, pass the index into the pattern array at which
      * to start the repeat, or -1 to disable repeating.
      * </p>
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#VIBRATE}.
      *
      * @param pattern an array of longs of times for which to turn the vibrator on or off.
      * @param repeat the index into pattern at which to repeat, or -1 if
@@ -156,6 +152,7 @@
      * @deprecated Use {@link #vibrate(VibrationEffect, AudioAttributes)} instead.
      */
     @Deprecated
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public void vibrate(long[] pattern, int repeat, AudioAttributes attributes) {
         // This call needs to continue throwing ArrayIndexOutOfBoundsException but ignore all other
         // exceptions for compatibility purposes
@@ -170,10 +167,12 @@
         }
     }
 
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public void vibrate(VibrationEffect vibe) {
         vibrate(vibe, null);
     }
 
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public void vibrate(VibrationEffect vibe, AudioAttributes attributes) {
         vibrate(Process.myUid(), mPackageName, vibe, attributes);
     }
@@ -183,13 +182,13 @@
      * that the vibration is owned by someone else.
      * @hide
      */
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public abstract void vibrate(int uid, String opPkg,
             VibrationEffect vibe, AudioAttributes attributes);
 
     /**
      * Turn the vibrator off.
-     * <p>This method requires the caller to hold the permission
-     * {@link android.Manifest.permission#VIBRATE}.
      */
+    @RequiresPermission(android.Manifest.permission.VIBRATE)
     public abstract void cancel();
 }