Merge "Fixed a bug where the notification content could become empty" into nyc-dev
diff --git a/core/java/android/animation/ValueAnimator.java b/core/java/android/animation/ValueAnimator.java
index e721de9..5ab2c1d 100644
--- a/core/java/android/animation/ValueAnimator.java
+++ b/core/java/android/animation/ValueAnimator.java
@@ -1029,8 +1029,16 @@
 
     @Override
     public void resume() {
-        if (mPaused) {
+        if (Looper.myLooper() == null) {
+            throw new AndroidRuntimeException("Animators may only be resumed from the same " +
+                    "thread that the animator was started on");
+        }
+        if (mPaused && !mResumed) {
             mResumed = true;
+            if (mPauseTime > 0) {
+                AnimationHandler handler = AnimationHandler.getInstance();
+                handler.addAnimationFrameCallback(this, 0);
+            }
         }
         super.resume();
     }
@@ -1235,9 +1243,8 @@
         }
         mLastFrameTime = frameTime;
         if (mPaused) {
-            if (mPauseTime < 0) {
-                mPauseTime = frameTime;
-            }
+            mPauseTime = frameTime;
+            handler.removeCallback(this);
             return;
         } else if (mResumed) {
             mResumed = false;
diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 2415ce1..1bc33b8 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -1788,7 +1788,8 @@
     }
 
     /**
-     * Creates the top level resources for the given package.
+     * Creates the top level resources for the given package. Will return an existing
+     * Resources if one has already been created.
      */
     Resources getTopLevelResources(String resDir, String[] splitResDirs, String[] overlayDirs,
             String[] libDirs, int displayId, Configuration overrideConfiguration,
@@ -1798,6 +1799,19 @@
                 pkgInfo.getClassLoader());
     }
 
+    /**
+     * Creates a new top level resources for the given package. Will always create a new
+     * Resources, regardless if one has already been created.
+     */
+    Resources getNewTopLevelResources(String resDir, String[] splitResDirs, String[] overlayDirs,
+            String[] libDirs, int displayId, Configuration overrideConfiguration,
+            LoadedApk pkgInfo) {
+        mResourcesManager.removeTopLevelResources(
+                resDir, displayId, overrideConfiguration, pkgInfo.getCompatibilityInfo());
+        return getTopLevelResources(resDir, splitResDirs, overlayDirs, libDirs,
+                displayId, overrideConfiguration, pkgInfo);
+    }
+
     final Handler getHandler() {
         return mH;
     }
@@ -4749,29 +4763,87 @@
 
     final void handleDispatchPackageBroadcast(int cmd, String[] packages) {
         boolean hasPkgInfo = false;
-        if (packages != null) {
-            synchronized (mResourcesManager) {
-                for (int i=packages.length-1; i>=0; i--) {
-                    //Slog.i(TAG, "Cleaning old package: " + packages[i]);
-                    if (!hasPkgInfo) {
-                        WeakReference<LoadedApk> ref;
-                        ref = mPackages.get(packages[i]);
-                        if (ref != null && ref.get() != null) {
+        switch (cmd) {
+            case IApplicationThread.PACKAGE_REMOVED:
+            case IApplicationThread.PACKAGE_REMOVED_DONT_KILL:
+            {
+                final boolean killApp = cmd == IApplicationThread.PACKAGE_REMOVED;
+                if (packages == null) {
+                    break;
+                }
+                synchronized (mResourcesManager) {
+                    for (int i = packages.length - 1; i >= 0; i--) {
+                        if (!hasPkgInfo) {
+                            WeakReference<LoadedApk> ref = mPackages.get(packages[i]);
+                            if (ref != null && ref.get() != null) {
+                                hasPkgInfo = true;
+                            } else {
+                                ref = mResourcePackages.get(packages[i]);
+                                if (ref != null && ref.get() != null) {
+                                    hasPkgInfo = true;
+                                }
+                            }
+                        }
+                        if (killApp) {
+                            mPackages.remove(packages[i]);
+                            mResourcePackages.remove(packages[i]);
+                        }
+                    }
+                }
+                break;
+            }
+            case IApplicationThread.PACKAGE_REPLACED:
+            {
+                if (packages == null) {
+                    break;
+                }
+                synchronized (mResourcesManager) {
+                    for (int i = packages.length - 1; i >= 0; i--) {
+                        WeakReference<LoadedApk> ref = mPackages.get(packages[i]);
+                        LoadedApk pkgInfo = ref != null ? ref.get() : null;
+                        if (pkgInfo != null) {
                             hasPkgInfo = true;
                         } else {
                             ref = mResourcePackages.get(packages[i]);
-                            if (ref != null && ref.get() != null) {
+                            pkgInfo = ref != null ? ref.get() : null;
+                            if (pkgInfo != null) {
                                 hasPkgInfo = true;
                             }
                         }
+                        // If the package is being replaced, yet it still has a valid
+                        // LoadedApk object, the package was updated with _DONT_KILL.
+                        // Adjust it's internal references to the application info and
+                        // resources.
+                        if (pkgInfo != null) {
+                            try {
+                                final String packageName = packages[i];
+                                final ApplicationInfo aInfo =
+                                        sPackageManager.getApplicationInfo(
+                                                packageName,
+                                                0 /*flags*/,
+                                                UserHandle.myUserId());
+
+                                if (mActivities.size() > 0) {
+                                    for (ActivityClientRecord ar : mActivities.values()) {
+                                        if (ar.activityInfo.applicationInfo.packageName
+                                                .equals(packageName)) {
+                                            ar.activityInfo.applicationInfo = aInfo;
+                                            ar.packageInfo = pkgInfo;
+                                        }
+                                    }
+                                }
+                                final List<String> oldPaths =
+                                        sPackageManager.getPreviousCodePaths(packageName);
+                                pkgInfo.updateApplicationInfo(aInfo, oldPaths);
+                            } catch (RemoteException e) {
+                            }
+                        }
                     }
-                    mPackages.remove(packages[i]);
-                    mResourcePackages.remove(packages[i]);
                 }
+                break;
             }
         }
-        ApplicationPackageManager.handlePackageBroadcast(cmd, packages,
-                hasPkgInfo);
+        ApplicationPackageManager.handlePackageBroadcast(cmd, packages, hasPkgInfo);
     }
 
     final void handleLowMemory() {
diff --git a/core/java/android/app/ApplicationLoaders.java b/core/java/android/app/ApplicationLoaders.java
index b20c091..0fc097e 100644
--- a/core/java/android/app/ApplicationLoaders.java
+++ b/core/java/android/app/ApplicationLoaders.java
@@ -86,6 +86,18 @@
                                                             String libraryPermittedPath,
                                                             boolean isShared);
 
+    /**
+     * Adds a new path the classpath of the given loader.
+     * @throws IllegalStateException if the provided class loader is not a {@link PathClassLoader}.
+     */
+    void addPath(ClassLoader classLoader, String dexPath) {
+        if (!(classLoader instanceof PathClassLoader)) {
+            throw new IllegalStateException("class loader is not a PathClassLoader");
+        }
+        final PathClassLoader baseDexClassLoader = (PathClassLoader) classLoader;
+        baseDexClassLoader.addDexPath(dexPath);
+    }
+
     private final ArrayMap<String, ClassLoader> mLoaders = new ArrayMap<String, ClassLoader>();
 
     private static final ApplicationLoaders gApplicationLoaders
diff --git a/core/java/android/app/IApplicationThread.java b/core/java/android/app/IApplicationThread.java
index a3c9591..628bde0 100644
--- a/core/java/android/app/IApplicationThread.java
+++ b/core/java/android/app/IApplicationThread.java
@@ -123,8 +123,13 @@
     void dumpHeap(boolean managed, String path, ParcelFileDescriptor fd)
             throws RemoteException;
     void setSchedulingGroup(int group) throws RemoteException;
+    // the package has been removed, clean up internal references
     static final int PACKAGE_REMOVED = 0;
     static final int EXTERNAL_STORAGE_UNAVAILABLE = 1;
+    // the package is being modified in-place, don't kill it and retain references to it
+    static final int PACKAGE_REMOVED_DONT_KILL = 2;
+    // a previously removed package was replaced with a new version [eg. upgrade, split added, ...]
+    static final int PACKAGE_REPLACED = 3;
     void dispatchPackageBroadcast(int cmd, String[] packages) throws RemoteException;
     void scheduleCrash(String msg) throws RemoteException;
     void dumpActivity(FileDescriptor fd, IBinder servicetoken, String prefix, String[] args)
diff --git a/core/java/android/app/LoadedApk.java b/core/java/android/app/LoadedApk.java
index b65faa9..cd17078 100644
--- a/core/java/android/app/LoadedApk.java
+++ b/core/java/android/app/LoadedApk.java
@@ -58,6 +58,7 @@
 import java.net.URL;
 import java.util.List;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Enumeration;
 import java.util.Objects;
@@ -83,24 +84,25 @@
     private static final String TAG = "LoadedApk";
 
     private final ActivityThread mActivityThread;
-    private ApplicationInfo mApplicationInfo;
     final String mPackageName;
-    private final String mAppDir;
-    private final String mResDir;
-    private final String[] mSplitAppDirs;
-    private final String[] mSplitResDirs;
-    private final String[] mOverlayDirs;
-    private final String[] mSharedLibraries;
-    private final String mDataDir;
-    private final String mLibDir;
-    private final File mDataDirFile;
-    private final File mDeviceEncryptedDataDirFile;
-    private final File mCredentialEncryptedDataDirFile;
+    private ApplicationInfo mApplicationInfo;
+    private String mAppDir;
+    private String mResDir;
+    private String[] mSplitAppDirs;
+    private String[] mSplitResDirs;
+    private String[] mOverlayDirs;
+    private String[] mSharedLibraries;
+    private String mDataDir;
+    private String mLibDir;
+    private File mDataDirFile;
+    private File mDeviceEncryptedDataDirFile;
+    private File mCredentialEncryptedDataDirFile;
     private final ClassLoader mBaseClassLoader;
     private final boolean mSecurityViolation;
     private final boolean mIncludeCode;
     private final boolean mRegisterPackage;
     private final DisplayAdjustments mDisplayAdjustments = new DisplayAdjustments();
+    /** WARNING: This may change. Don't hold external references to it. */
     Resources mResources;
     private ClassLoader mClassLoader;
     private Application mApplication;
@@ -129,23 +131,10 @@
     public LoadedApk(ActivityThread activityThread, ApplicationInfo aInfo,
             CompatibilityInfo compatInfo, ClassLoader baseLoader,
             boolean securityViolation, boolean includeCode, boolean registerPackage) {
-        final int myUid = Process.myUid();
-        aInfo = adjustNativeLibraryPaths(aInfo);
 
         mActivityThread = activityThread;
-        mApplicationInfo = aInfo;
+        setApplicationInfo(aInfo);
         mPackageName = aInfo.packageName;
-        mAppDir = aInfo.sourceDir;
-        mResDir = aInfo.uid == myUid ? aInfo.sourceDir : aInfo.publicSourceDir;
-        mSplitAppDirs = aInfo.splitSourceDirs;
-        mSplitResDirs = aInfo.uid == myUid ? aInfo.splitSourceDirs : aInfo.splitPublicSourceDirs;
-        mOverlayDirs = aInfo.resourceDirs;
-        mSharedLibraries = aInfo.sharedLibraryFiles;
-        mDataDir = aInfo.dataDir;
-        mDataDirFile = FileUtils.newFileOrNull(mDataDir);
-        mDeviceEncryptedDataDirFile = FileUtils.newFileOrNull(aInfo.deviceEncryptedDataDir);
-        mCredentialEncryptedDataDirFile = FileUtils.newFileOrNull(aInfo.credentialEncryptedDataDir);
-        mLibDir = aInfo.nativeLibraryDir;
         mBaseClassLoader = baseLoader;
         mSecurityViolation = securityViolation;
         mIncludeCode = includeCode;
@@ -266,26 +255,165 @@
         return ai.sharedLibraryFiles;
     }
 
-    public ClassLoader getClassLoader() {
-        synchronized (this) {
-            if (mClassLoader != null) {
-                return mClassLoader;
-            }
+    public void updateApplicationInfo(ApplicationInfo aInfo, List<String> oldPaths) {
+        setApplicationInfo(aInfo);
 
-            if (mPackageName.equals("android")) {
-                if (mBaseClassLoader == null) {
-                    mClassLoader = ClassLoader.getSystemClassLoader();
-                } else {
-                    mClassLoader = mBaseClassLoader;
+        final List<String> newPaths = new ArrayList<>();
+        makePaths(mActivityThread, aInfo, newPaths, null /*libPaths*/);
+        final List<String> addedPaths = new ArrayList<>(newPaths.size());
+
+        if (oldPaths != null) {
+            for (String path : newPaths) {
+                final String apkName = path.substring(path.lastIndexOf(File.separator));
+                boolean match = false;
+                for (String oldPath : oldPaths) {
+                    final String oldApkName = oldPath.substring(path.lastIndexOf(File.separator));
+                    if (apkName.equals(oldApkName)) {
+                        match = true;
+                        break;
+                    }
                 }
-                return mClassLoader;
+                if (!match) {
+                    addedPaths.add(path);
+                }
+            }
+        } else {
+            addedPaths.addAll(newPaths);
+        }
+        synchronized (this) {
+            mClassLoader = createOrUpdateClassLoaderLocked(addedPaths);
+            if (mResources != null) {
+                mResources = mActivityThread.getNewTopLevelResources(mResDir, mSplitResDirs,
+                        mOverlayDirs, mApplicationInfo.sharedLibraryFiles, Display.DEFAULT_DISPLAY,
+                        null /*overrideConfiguration*/, this);
+            }
+        }
+    }
+
+    private void setApplicationInfo(ApplicationInfo aInfo) {
+        final int myUid = Process.myUid();
+        aInfo = adjustNativeLibraryPaths(aInfo);
+        mApplicationInfo = aInfo;
+        mAppDir = aInfo.sourceDir;
+        mResDir = aInfo.uid == myUid ? aInfo.sourceDir : aInfo.publicSourceDir;
+        mSplitAppDirs = aInfo.splitSourceDirs;
+        mSplitResDirs = aInfo.uid == myUid ? aInfo.splitSourceDirs : aInfo.splitPublicSourceDirs;
+        mOverlayDirs = aInfo.resourceDirs;
+        mSharedLibraries = aInfo.sharedLibraryFiles;
+        mDataDir = aInfo.dataDir;
+        mLibDir = aInfo.nativeLibraryDir;
+        mDataDirFile = FileUtils.newFileOrNull(aInfo.dataDir);
+        mDeviceEncryptedDataDirFile = FileUtils.newFileOrNull(aInfo.deviceEncryptedDataDir);
+        mCredentialEncryptedDataDirFile = FileUtils.newFileOrNull(aInfo.credentialEncryptedDataDir);
+    }
+
+    public static void makePaths(ActivityThread activityThread, ApplicationInfo aInfo,
+            List<String> outZipPaths, List<String> outLibPaths) {
+        final String appDir = aInfo.sourceDir;
+        final String[] splitAppDirs = aInfo.splitSourceDirs;
+        final String libDir = aInfo.nativeLibraryDir;
+        final String[] sharedLibraries = aInfo.sharedLibraryFiles;
+
+        outZipPaths.clear();
+        outZipPaths.add(appDir);
+        if (splitAppDirs != null) {
+            Collections.addAll(outZipPaths, splitAppDirs);
+        }
+
+        if (outLibPaths != null) {
+            outLibPaths.clear();
+        }
+
+        /*
+         * The following is a bit of a hack to inject
+         * instrumentation into the system: If the app
+         * being started matches one of the instrumentation names,
+         * then we combine both the "instrumentation" and
+         * "instrumented" app into the path, along with the
+         * concatenation of both apps' shared library lists.
+         */
+
+        String instrumentationPackageName = activityThread.mInstrumentationPackageName;
+        String instrumentationAppDir = activityThread.mInstrumentationAppDir;
+        String[] instrumentationSplitAppDirs = activityThread.mInstrumentationSplitAppDirs;
+        String instrumentationLibDir = activityThread.mInstrumentationLibDir;
+
+        String instrumentedAppDir = activityThread.mInstrumentedAppDir;
+        String[] instrumentedSplitAppDirs = activityThread.mInstrumentedSplitAppDirs;
+        String instrumentedLibDir = activityThread.mInstrumentedLibDir;
+        String[] instrumentationLibs = null;
+
+        if (appDir.equals(instrumentationAppDir)
+                || appDir.equals(instrumentedAppDir)) {
+            outZipPaths.clear();
+            outZipPaths.add(instrumentationAppDir);
+            if (instrumentationSplitAppDirs != null) {
+                Collections.addAll(outZipPaths, instrumentationSplitAppDirs);
+            }
+            outZipPaths.add(instrumentedAppDir);
+            if (instrumentedSplitAppDirs != null) {
+                Collections.addAll(outZipPaths, instrumentedSplitAppDirs);
             }
 
+            if (outLibPaths != null) {
+                outLibPaths.add(instrumentationLibDir);
+                outLibPaths.add(instrumentedLibDir);
+            }
+
+            if (!instrumentedAppDir.equals(instrumentationAppDir)) {
+                instrumentationLibs = getLibrariesFor(instrumentationPackageName);
+            }
+        }
+
+        if (outLibPaths != null) {
+            if (outLibPaths.isEmpty()) {
+                outLibPaths.add(libDir);
+            }
+
+            // Add path to libraries in apk for current abi. Do this now because more entries
+            // will be added to zipPaths that shouldn't be part of the library path.
+            if (aInfo.primaryCpuAbi != null) {
+                for (String apk : outZipPaths) {
+                    outLibPaths.add(apk + "!/lib/" + aInfo.primaryCpuAbi);
+                }
+            }
+
+            if (aInfo.isSystemApp() && !aInfo.isUpdatedSystemApp()) {
+                // Add path to system libraries to libPaths;
+                // Access to system libs should be limited
+                // to bundled applications; this is why updated
+                // system apps are not included.
+                outLibPaths.add(System.getProperty("java.library.path"));
+            }
+        }
+
+        if (sharedLibraries != null) {
+            for (String lib : sharedLibraries) {
+                if (!outZipPaths.contains(lib)) {
+                    outZipPaths.add(0, lib);
+                }
+            }
+        }
+
+        if (instrumentationLibs != null) {
+            for (String lib : instrumentationLibs) {
+                if (!outZipPaths.contains(lib)) {
+                    outZipPaths.add(0, lib);
+                }
+            }
+        }
+
+        final String zip = TextUtils.join(File.pathSeparator, outZipPaths);
+    }
+
+    private ClassLoader createOrUpdateClassLoaderLocked(List<String> addedPaths) {
+        final ClassLoader classLoader;
+        if (mIncludeCode && !mPackageName.equals("android")) {
             // Avoid the binder call when the package is the current application package.
             // The activity manager will perform ensure that dexopt is performed before
             // spinning up the process.
             if (!Objects.equals(mPackageName, ActivityThread.currentPackageName())) {
-                final String isa = VMRuntime.getRuntime().vmInstructionSet();
+                VMRuntime.getRuntime().vmInstructionSet();
                 try {
                     ActivityThread.getPackageManager().notifyPackageUse(mPackageName);
                 } catch (RemoteException re) {
@@ -294,7 +422,6 @@
             }
 
             final List<String> zipPaths = new ArrayList<>();
-            final List<String> apkPaths = new ArrayList<>();
             final List<String> libPaths = new ArrayList<>();
 
             if (mRegisterPackage) {
@@ -305,91 +432,12 @@
                 }
             }
 
-            zipPaths.add(mAppDir);
-            if (mSplitAppDirs != null) {
-                Collections.addAll(zipPaths, mSplitAppDirs);
-            }
-
-            libPaths.add(mLibDir);
-
-            /*
-             * The following is a bit of a hack to inject
-             * instrumentation into the system: If the app
-             * being started matches one of the instrumentation names,
-             * then we combine both the "instrumentation" and
-             * "instrumented" app into the path, along with the
-             * concatenation of both apps' shared library lists.
-             */
-
-            String instrumentationPackageName = mActivityThread.mInstrumentationPackageName;
-            String instrumentationAppDir = mActivityThread.mInstrumentationAppDir;
-            String[] instrumentationSplitAppDirs = mActivityThread.mInstrumentationSplitAppDirs;
-            String instrumentationLibDir = mActivityThread.mInstrumentationLibDir;
-
-            String instrumentedAppDir = mActivityThread.mInstrumentedAppDir;
-            String[] instrumentedSplitAppDirs = mActivityThread.mInstrumentedSplitAppDirs;
-            String instrumentedLibDir = mActivityThread.mInstrumentedLibDir;
-            String[] instrumentationLibs = null;
-
-            if (mAppDir.equals(instrumentationAppDir)
-                    || mAppDir.equals(instrumentedAppDir)) {
-                zipPaths.clear();
-                zipPaths.add(instrumentationAppDir);
-                if (instrumentationSplitAppDirs != null) {
-                    Collections.addAll(zipPaths, instrumentationSplitAppDirs);
-                }
-                zipPaths.add(instrumentedAppDir);
-                if (instrumentedSplitAppDirs != null) {
-                    Collections.addAll(zipPaths, instrumentedSplitAppDirs);
-                }
-
-                libPaths.clear();
-                libPaths.add(instrumentationLibDir);
-                libPaths.add(instrumentedLibDir);
-
-                if (!instrumentedAppDir.equals(instrumentationAppDir)) {
-                    instrumentationLibs = getLibrariesFor(instrumentationPackageName);
-                }
-            }
-
-            apkPaths.addAll(zipPaths);
-
-            if (mSharedLibraries != null) {
-                for (String lib : mSharedLibraries) {
-                    if (!zipPaths.contains(lib)) {
-                        zipPaths.add(0, lib);
-                    }
-                }
-            }
-
-            if (instrumentationLibs != null) {
-                for (String lib : instrumentationLibs) {
-                    if (!zipPaths.contains(lib)) {
-                        zipPaths.add(0, lib);
-                    }
-                }
-            }
-
-            final String zip = mIncludeCode ? TextUtils.join(File.pathSeparator, zipPaths) : "";
-
-            // Add path to libraries in apk for current abi
-            if (mApplicationInfo.primaryCpuAbi != null) {
-                for (String apk : apkPaths) {
-                  libPaths.add(apk + "!/lib/" + mApplicationInfo.primaryCpuAbi);
-                }
-            }
-
+            makePaths(mActivityThread, mApplicationInfo, zipPaths, libPaths);
+            final String zip = TextUtils.join(File.pathSeparator, zipPaths);
+            final boolean isBundledApp = mApplicationInfo.isSystemApp()
+                    && !mApplicationInfo.isUpdatedSystemApp();
             String libraryPermittedPath = mDataDir;
-            boolean isBundledApp = false;
-
-            if (mApplicationInfo.isSystemApp() && !mApplicationInfo.isUpdatedSystemApp()) {
-                isBundledApp = true;
-                // Add path to system libraries to libPaths;
-                // Access to system libs should be limited
-                // to bundled applications; this is why updated
-                // system apps are not included.
-                libPaths.add(System.getProperty("java.library.path"));
-
+            if (isBundledApp) {
                 // This is necessary to grant bundled apps access to
                 // libraries located in subdirectories of /system/lib
                 libraryPermittedPath += File.pathSeparator +
@@ -414,15 +462,42 @@
                 Slog.v(ActivityThread.TAG, "Class path: " + zip +
                         ", JNI path: " + librarySearchPath);
 
-            // Temporarily disable logging of disk reads on the Looper thread
-            // as this is early and necessary.
-            StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
+            if (mClassLoader == null) {
+                // Temporarily disable logging of disk reads on the Looper thread
+                // as this is early and necessary.
+                StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
 
-            mClassLoader = ApplicationLoaders.getDefault().getClassLoader(zip,
-                    mApplicationInfo.targetSdkVersion, isBundledApp, librarySearchPath,
-                    libraryPermittedPath, mBaseClassLoader);
+                classLoader = ApplicationLoaders.getDefault().getClassLoader(zip,
+                        mApplicationInfo.targetSdkVersion, isBundledApp, librarySearchPath,
+                        libraryPermittedPath, mBaseClassLoader);
 
-            StrictMode.setThreadPolicy(oldPolicy);
+                StrictMode.setThreadPolicy(oldPolicy);
+            } else if (addedPaths != null && addedPaths.size() > 0) {
+                final String add = TextUtils.join(File.pathSeparator, addedPaths);
+                ApplicationLoaders.getDefault().addPath(mClassLoader, add);
+                classLoader = mClassLoader;
+            } else {
+                classLoader = mClassLoader;
+            }
+        } else {
+            if (mClassLoader == null) {
+                if (mBaseClassLoader == null) {
+                    classLoader = ClassLoader.getSystemClassLoader();
+                } else {
+                    classLoader = mBaseClassLoader;
+                }
+            } else {
+                classLoader = mClassLoader;
+            }
+        }
+        return classLoader;
+    }
+
+    public ClassLoader getClassLoader() {
+        synchronized (this) {
+            if (mClassLoader == null) {
+                mClassLoader = createOrUpdateClassLoaderLocked(null /*addedPaths*/);
+            }
             return mClassLoader;
         }
     }
@@ -1103,7 +1178,6 @@
 
         private RuntimeException mUnbindLocation;
 
-        private boolean mDied;
         private boolean mForgotten;
 
         private static class ConnectionInfo {
@@ -1202,7 +1276,6 @@
             ServiceDispatcher.ConnectionInfo old;
 
             synchronized (this) {
-                mDied = true;
                 old = mActiveConnections.remove(name);
                 if (old == null || old.binder != service) {
                     // Death for someone different than who we last
@@ -1237,7 +1310,6 @@
 
                 if (service != null) {
                     // A new service is being connected... set it all up.
-                    mDied = false;
                     info = new ConnectionInfo();
                     info.binder = service;
                     info.deathMonitor = new DeathMonitor(name, service);
diff --git a/core/java/android/app/ResourcesManager.java b/core/java/android/app/ResourcesManager.java
index 94e584e..a6612f6 100644
--- a/core/java/android/app/ResourcesManager.java
+++ b/core/java/android/app/ResourcesManager.java
@@ -288,6 +288,19 @@
         }
     }
 
+    /**
+     * Removes the top level Resources for applications with the given compatibility info.
+     * @see #getTopLevelResources(String, String[], String[], String[], int, Configuration, CompatibilityInfo, ClassLoader)
+     */
+    void removeTopLevelResources(String resDir, int displayId, Configuration overrideConfiguration,
+            CompatibilityInfo compatInfo) {
+        final float scale = compatInfo.applicationScale;
+        final Configuration overrideConfigCopy = (overrideConfiguration != null)
+                ? new Configuration(overrideConfiguration) : null;
+        final ResourcesKey key = new ResourcesKey(resDir, displayId, overrideConfigCopy, scale);
+        mActiveResources.remove(key);
+    }
+
     /* package */ void setDefaultLocalesLocked(LocaleList locales) {
         final int bestLocale;
         if (mHasNonSystemLocales) {
diff --git a/core/java/android/content/pm/IPackageManager.aidl b/core/java/android/content/pm/IPackageManager.aidl
index 9959f27..0389085 100644
--- a/core/java/android/content/pm/IPackageManager.aidl
+++ b/core/java/android/content/pm/IPackageManager.aidl
@@ -530,4 +530,7 @@
     String getServicesSystemSharedLibraryPackageName();
 
     boolean isPackageDeviceAdminOnAnyUser(String packageName);
+
+    List<String> getPreviousCodePaths(in String packageName);
+
 }
diff --git a/core/java/android/content/pm/PackageInstaller.java b/core/java/android/content/pm/PackageInstaller.java
index 2cbb782..700a40d 100644
--- a/core/java/android/content/pm/PackageInstaller.java
+++ b/core/java/android/content/pm/PackageInstaller.java
@@ -1042,6 +1042,11 @@
         }
 
         /** {@hide} */
+        public void setInstallFlagsDontKillApp() {
+            installFlags |= PackageManager.INSTALL_DONT_KILL_APP;
+        }
+
+        /** {@hide} */
         public void dump(IndentingPrintWriter pw) {
             pw.printPair("mode", mode);
             pw.printHexPair("installFlags", installFlags);
diff --git a/core/java/android/content/pm/PackageManager.java b/core/java/android/content/pm/PackageManager.java
index 27056a3..c1a559e 100644
--- a/core/java/android/content/pm/PackageManager.java
+++ b/core/java/android/content/pm/PackageManager.java
@@ -538,6 +538,7 @@
             INSTALL_FORCE_VOLUME_UUID,
             INSTALL_FORCE_PERMISSION_PROMPT,
             INSTALL_EPHEMERAL,
+            INSTALL_DONT_KILL_APP,
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface InstallFlags {}
@@ -640,6 +641,15 @@
     public static final int INSTALL_EPHEMERAL = 0x00000800;
 
     /**
+     * Flag parameter for {@link #installPackage} to indicate that this package contains
+     * a feature split to an existing application and the existing application should not
+     * be killed during the installation process.
+     *
+     * @hide
+     */
+    public static final int INSTALL_DONT_KILL_APP = 0x00001000;
+
+    /**
      * Flag parameter for
      * {@link #setComponentEnabledSetting(android.content.ComponentName, int, int)} to indicate
      * that you don't want to kill the app containing the component.  Be careful when you set this
@@ -1088,6 +1098,7 @@
             DELETE_KEEP_DATA,
             DELETE_ALL_USERS,
             DELETE_SYSTEM_APP,
+            DELETE_DONT_KILL_APP,
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface DeleteFlags {}
@@ -1120,6 +1131,15 @@
     public static final int DELETE_SYSTEM_APP = 0x00000004;
 
     /**
+     * Flag parameter for {@link #deletePackage} to indicate that, if you are calling
+     * uninstall on a package that is replaced to provide new feature splits, the
+     * existing application should not be killed during the removal process.
+     *
+     * @hide
+     */
+    public static final int DELETE_DONT_KILL_APP = 0x00000008;
+
+    /**
      * Return code for when package deletion succeeds. This is passed to the
      * {@link IPackageDeleteObserver} if the system succeeded in deleting the
      * package.
diff --git a/core/java/android/content/pm/PackageManagerInternal.java b/core/java/android/content/pm/PackageManagerInternal.java
index 7fe7f84..89f2fc4 100644
--- a/core/java/android/content/pm/PackageManagerInternal.java
+++ b/core/java/android/content/pm/PackageManagerInternal.java
@@ -16,6 +16,8 @@
 
 package android.content.pm;
 
+import android.content.pm.PackageManager.NameNotFoundException;
+
 import java.util.List;
 
 /**
@@ -125,4 +127,17 @@
      * @return True a permissions review is required.
      */
     public abstract boolean isPermissionsReviewRequired(String packageName, int userId);
+
+    /**
+     * Gets all of the information we know about a particular package.
+     *
+     * @param packageName The package name to find.
+     * @param userId The user under which to check.
+     *
+     * @return An {@link ApplicationInfo} containing information about the
+     *         package.
+     * @throws NameNotFoundException if a package with the given name cannot be
+     *             found on the system.
+     */
+    public abstract ApplicationInfo getApplicationInfo(String packageName, int userId);
 }
diff --git a/core/java/com/android/internal/app/LocaleHelper.java b/core/java/com/android/internal/app/LocaleHelper.java
index aca93ab..d8d6e56 100644
--- a/core/java/com/android/internal/app/LocaleHelper.java
+++ b/core/java/com/android/internal/app/LocaleHelper.java
@@ -180,14 +180,16 @@
      */
     public static final class LocaleInfoComparator implements Comparator<LocaleStore.LocaleInfo> {
         private final Collator mCollator;
+        private final boolean mCountryMode;
 
         /**
          * Constructor.
          *
          * @param sortLocale the locale to be used for sorting.
          */
-        public LocaleInfoComparator(Locale sortLocale) {
+        public LocaleInfoComparator(Locale sortLocale, boolean countryMode) {
             mCollator = Collator.getInstance(sortLocale);
+            mCountryMode = countryMode;
         }
 
         /**
@@ -202,9 +204,9 @@
         public int compare(LocaleStore.LocaleInfo lhs, LocaleStore.LocaleInfo rhs) {
             // We don't care about the various suggestion types, just "suggested" (!= 0)
             // and "all others" (== 0)
-            if (lhs.isSuggested() == rhs.isSuggested()) {
+            if (mCountryMode || (lhs.isSuggested() == rhs.isSuggested())) {
                 // They are in the same "bucket" (suggested / others), so we compare the text
-                return mCollator.compare(lhs.getLabel(), rhs.getLabel());
+                return mCollator.compare(lhs.getLabel(mCountryMode), rhs.getLabel(mCountryMode));
             } else {
                 // One locale is suggested and one is not, so we put them in different "buckets"
                 return lhs.isSuggested() ? -1 : 1;
diff --git a/core/java/com/android/internal/app/LocalePickerWithRegion.java b/core/java/com/android/internal/app/LocalePickerWithRegion.java
index 956ee8c..2ea225f 100644
--- a/core/java/com/android/internal/app/LocalePickerWithRegion.java
+++ b/core/java/com/android/internal/app/LocalePickerWithRegion.java
@@ -50,7 +50,6 @@
     private Set<LocaleStore.LocaleInfo> mLocaleList;
     private LocaleStore.LocaleInfo mParentLocale;
     private boolean mTranslatedOnly = false;
-    private boolean mCountryMode = false;
 
     /**
      * Other classes can register to be notified when a locale was selected.
@@ -70,15 +69,14 @@
             boolean translatedOnly) {
         LocalePickerWithRegion localePicker = new LocalePickerWithRegion();
         boolean shouldShowTheList = localePicker.setListener(context, listener, parent,
-                true /* country mode */, translatedOnly);
+                translatedOnly);
         return shouldShowTheList ? localePicker : null;
     }
 
     public static LocalePickerWithRegion createLanguagePicker(Context context,
             LocaleSelectedListener listener, boolean translatedOnly) {
         LocalePickerWithRegion localePicker = new LocalePickerWithRegion();
-        localePicker.setListener(context, listener, null,
-                false /* language mode */, translatedOnly);
+        localePicker.setListener(context, listener, /* parent */ null, translatedOnly);
         return localePicker;
     }
 
@@ -96,14 +94,7 @@
      * "pretending" it was selected, and return false.</p>
      */
     private boolean setListener(Context context, LocaleSelectedListener listener,
-            LocaleStore.LocaleInfo parent, boolean countryMode, boolean translatedOnly) {
-        if (countryMode && (parent == null || parent.getLocale() == null)) {
-            // The list of countries is determined as all the countries where the parent language
-            // is used.
-            throw new IllegalArgumentException("The country selection list needs a parent.");
-        }
-
-        this.mCountryMode = countryMode;
+            LocaleStore.LocaleInfo parent, boolean translatedOnly) {
         this.mParentLocale = parent;
         this.mListener = listener;
         this.mTranslatedOnly = translatedOnly;
@@ -116,7 +107,7 @@
             Collections.addAll(langTagsToIgnore, langTags);
         }
 
-        if (countryMode) {
+        if (parent != null) {
             mLocaleList = LocaleStore.getLevelLocales(context,
                     langTagsToIgnore, parent, translatedOnly);
             if (mLocaleList.size() <= 1) {
@@ -138,13 +129,11 @@
         super.onCreate(savedInstanceState);
         setHasOptionsMenu(true);
 
-        final Locale sortingLocale = (mCountryMode && mParentLocale != null)
-                ? mParentLocale.getLocale()
-                : Locale.getDefault();
-
-        mAdapter = new SuggestedLocaleAdapter(mLocaleList, mCountryMode);
+        final boolean countryMode = mParentLocale != null;
+        final Locale sortingLocale = countryMode ? mParentLocale.getLocale() : Locale.getDefault();
+        mAdapter = new SuggestedLocaleAdapter(mLocaleList, countryMode);
         final LocaleHelper.LocaleInfoComparator comp =
-                new LocaleHelper.LocaleInfoComparator(sortingLocale);
+                new LocaleHelper.LocaleInfoComparator(sortingLocale, countryMode);
         mAdapter.sort(comp);
         setListAdapter(mAdapter);
     }
@@ -164,12 +153,8 @@
     public void onResume() {
         super.onResume();
 
-        if (mCountryMode) {
-            if (mParentLocale == null) {
-                this.getActivity().setTitle(R.string.country_selection_title);
-            } else {
-                this.getActivity().setTitle(mParentLocale.getFullNameNative());
-            }
+        if (mParentLocale != null) {
+            this.getActivity().setTitle(mParentLocale.getFullNameNative());
         } else {
             this.getActivity().setTitle(R.string.language_selection_title);
         }
@@ -182,7 +167,7 @@
         final LocaleStore.LocaleInfo locale =
                 (LocaleStore.LocaleInfo) getListAdapter().getItem(position);
 
-        if (mCountryMode || locale.getParent() != null) {
+        if (locale.getParent() != null) {
             if (mListener != null) {
                 mListener.onLocaleSelected(locale);
             }
@@ -205,7 +190,7 @@
 
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
-        if (!mCountryMode) {
+        if (mParentLocale == null) {
             inflater.inflate(R.menu.language_selection_list, menu);
 
             MenuItem mSearchMenuItem = menu.findItem(R.id.locale_search_menu);
diff --git a/core/java/com/android/internal/app/LocaleStore.java b/core/java/com/android/internal/app/LocaleStore.java
index 465c4d8..c4e6675 100644
--- a/core/java/com/android/internal/app/LocaleStore.java
+++ b/core/java/com/android/internal/app/LocaleStore.java
@@ -145,11 +145,11 @@
             return mLangScriptKey;
         }
 
-        String getLabel() {
-            if (getParent() == null || this.isSuggestionOfType(SUGGESTION_TYPE_SIM)) {
-                return getFullNameNative();
-            } else {
+        String getLabel(boolean countryMode) {
+            if (countryMode) {
                 return getFullCountryNameNative();
+            } else {
+                return getFullNameNative();
             }
         }
 
@@ -311,9 +311,7 @@
             if (level == 2) {
                 if (parent != null) { // region selection
                     if (parentId.equals(li.getParent().toLanguageTag())) {
-                        if (!li.isSuggestionOfType(LocaleInfo.SUGGESTION_TYPE_SIM)) {
-                            result.add(li);
-                        }
+                        result.add(li);
                     }
                 } else { // language selection
                     if (li.isSuggestionOfType(LocaleInfo.SUGGESTION_TYPE_SIM)) {
diff --git a/core/java/com/android/internal/app/SuggestedLocaleAdapter.java b/core/java/com/android/internal/app/SuggestedLocaleAdapter.java
index 0d4a5aa..98102ea 100644
--- a/core/java/com/android/internal/app/SuggestedLocaleAdapter.java
+++ b/core/java/com/android/internal/app/SuggestedLocaleAdapter.java
@@ -156,7 +156,7 @@
 
                 TextView text = (TextView) convertView.findViewById(R.id.locale);
                 LocaleStore.LocaleInfo item = (LocaleStore.LocaleInfo) getItem(position);
-                text.setText(item.getLabel());
+                text.setText(item.getLabel(mCountryMode));
                 text.setTextLocale(item.getLocale());
                 if (mCountryMode) {
                     int layoutDir = TextUtils.getLayoutDirectionFromLocale(item.getParent());
@@ -171,6 +171,9 @@
     }
 
     private boolean showHeaders() {
+        if (mCountryMode) { // never show suggestions in country mode
+            return false;
+        }
         return mSuggestionCount != 0 && mSuggestionCount != mLocaleOptions.size();
     }
 
diff --git a/core/tests/coretests/src/android/animation/ValueAnimatorTests.java b/core/tests/coretests/src/android/animation/ValueAnimatorTests.java
index 998c72a..c92863d 100644
--- a/core/tests/coretests/src/android/animation/ValueAnimatorTests.java
+++ b/core/tests/coretests/src/android/animation/ValueAnimatorTests.java
@@ -328,7 +328,12 @@
         // Only a1's pause listener should be called.
         assertTrue(l1.pauseCalled);
         assertFalse(l1.resumeCalled);
-        a1.resume();
+        runTestOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                a1.resume();
+            }
+        });
 
         Thread.sleep(a1.getTotalDuration());
 
diff --git a/packages/SettingsLib/src/com/android/settingslib/drawer/SettingsDrawerActivity.java b/packages/SettingsLib/src/com/android/settingslib/drawer/SettingsDrawerActivity.java
index a578055..7a1c741 100644
--- a/packages/SettingsLib/src/com/android/settingslib/drawer/SettingsDrawerActivity.java
+++ b/packages/SettingsLib/src/com/android/settingslib/drawer/SettingsDrawerActivity.java
@@ -69,16 +69,18 @@
 
         long startTime = System.currentTimeMillis();
 
-        getWindow().addFlags(LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
-        getWindow().addFlags(LayoutParams.FLAG_TRANSLUCENT_STATUS);
-        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        TypedArray theme = getTheme().obtainStyledAttributes(android.R.styleable.Theme);
+        if (!theme.getBoolean(android.R.styleable.Theme_windowNoTitle, false)) {
+            getWindow().addFlags(LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
+            getWindow().addFlags(LayoutParams.FLAG_TRANSLUCENT_STATUS);
+            requestWindowFeature(Window.FEATURE_NO_TITLE);
+        }
         super.setContentView(R.layout.settings_with_drawer);
         mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
         if (mDrawerLayout == null) {
             return;
         }
         Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
-        TypedArray theme = getTheme().obtainStyledAttributes(android.R.styleable.Theme);
         if (theme.getBoolean(android.R.styleable.Theme_windowNoTitle, false)) {
             toolbar.setVisibility(View.GONE);
             mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
diff --git a/packages/SystemUI/res/layout/remote_input.xml b/packages/SystemUI/res/layout/remote_input.xml
index 818df3b..75195c4 100644
--- a/packages/SystemUI/res/layout/remote_input.xml
+++ b/packages/SystemUI/res/layout/remote_input.xml
@@ -43,7 +43,7 @@
             android:singleLine="true"
             android:ellipsize="start"
             android:inputType="textShortMessage|textAutoCorrect|textCapSentences"
-            android:imeOptions="actionSend" />
+            android:imeOptions="actionSend|flagNoExtractUi" />
 
     <FrameLayout
             android:layout_width="wrap_content"
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 8a7f90b..12c3a5d 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -292,6 +292,9 @@
     <!-- The amount to allow the stack to overscroll. -->
     <dimen name="recents_stack_overscroll">24dp</dimen>
 
+    <!-- The size of the initial peek area at the top of the stack (below the status bar). -->
+    <dimen name="recents_initial_top_peek_size">8dp</dimen>
+
     <!-- The size of the peek area at the top of the stack (below the status bar). -->
     <dimen name="recents_layout_focused_top_peek_size">@dimen/recents_history_button_height</dimen>
 
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java
index d7c12ba..a2934d74 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java
@@ -43,6 +43,7 @@
 import com.android.systemui.recents.events.EventBus;
 import com.android.systemui.recents.events.activity.AppWidgetProviderChangedEvent;
 import com.android.systemui.recents.events.activity.CancelEnterRecentsWindowAnimationEvent;
+import com.android.systemui.recents.events.activity.ConfigurationChangedEvent;
 import com.android.systemui.recents.events.activity.DebugFlagsChangedEvent;
 import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted;
 import com.android.systemui.recents.events.activity.EnterRecentsWindowAnimationCompletedEvent;
@@ -107,7 +108,7 @@
     private RecentsAppWidgetHostView mSearchWidgetHostView;
 
     // Runnables to finish the Recents activity
-    private FinishRecentsRunnable mFinishLaunchHomeRunnable;
+    private Intent mHomeIntent;
 
     // The trigger to automatically launch the current task
     private int mFocusTimerDuration;
@@ -119,7 +120,7 @@
      * last activity launch state. Generally we always launch home when we exit Recents rather than
      * just finishing the activity since we don't know what is behind Recents in the task stack.
      */
-    class FinishRecentsRunnable implements Runnable {
+    class LaunchHomeRunnable implements Runnable {
 
         Intent mLaunchIntent;
         ActivityOptions mOpts;
@@ -127,7 +128,7 @@
         /**
          * Creates a finish runnable that starts the specified intent.
          */
-        public FinishRecentsRunnable(Intent launchIntent, ActivityOptions opts) {
+        public LaunchHomeRunnable(Intent launchIntent, ActivityOptions opts) {
             mLaunchIntent = launchIntent;
             mOpts = opts;
         }
@@ -215,7 +216,7 @@
             MetricsLogger.count(this, "overview_trigger_nav_btn", 1);
         }
         // Keep track of whether we launched from an app or from home
-        if (launchState.launchedFromAppWithThumbnail) {
+        if (launchState.launchedFromApp) {
             MetricsLogger.count(this, "overview_source_app", 1);
             // If from an app, track the stack index of the app in the stack (for affiliated tasks)
             MetricsLogger.histogram(this, "overview_source_app_index", launchTaskIndexInStack);
@@ -294,12 +295,8 @@
     void dismissRecentsToHome(boolean animateTaskViews, ActivityOptions overrideAnimation) {
         DismissRecentsToHomeAnimationStarted dismissEvent =
                 new DismissRecentsToHomeAnimationStarted(animateTaskViews);
-        if (overrideAnimation != null) {
-            dismissEvent.addPostAnimationCallback(new FinishRecentsRunnable(
-                    mFinishLaunchHomeRunnable.mLaunchIntent, overrideAnimation));
-        } else {
-            dismissEvent.addPostAnimationCallback(mFinishLaunchHomeRunnable);
-        }
+        dismissEvent.addPostAnimationCallback(new LaunchHomeRunnable(mHomeIntent,
+                overrideAnimation));
         dismissEvent.addPostAnimationCallback(new Runnable() {
             @Override
             public void run() {
@@ -365,11 +362,10 @@
         });
 
         // Create the home intent runnable
-        Intent homeIntent = new Intent(Intent.ACTION_MAIN, null);
-        homeIntent.addCategory(Intent.CATEGORY_HOME);
-        homeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
+        mHomeIntent = new Intent(Intent.ACTION_MAIN, null);
+        mHomeIntent.addCategory(Intent.CATEGORY_HOME);
+        mHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
                 Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
-        mFinishLaunchHomeRunnable = new FinishRecentsRunnable(homeIntent, null);
 
         // Bind the search app widget when we first start up
         if (RecentsDebugFlags.Static.EnableSearchBar) {
@@ -404,7 +400,7 @@
         RecentsConfiguration config = Recents.getConfiguration();
         RecentsActivityLaunchState launchState = config.getLaunchState();
         boolean wasLaunchedByAm = !launchState.launchedFromHome &&
-                !launchState.launchedFromAppWithThumbnail;
+                !launchState.launchedFromApp;
         if (launchState.launchedHasConfigurationChanged || wasLaunchedByAm) {
             EventBus.getDefault().send(new EnterRecentsWindowAnimationCompletedEvent());
         }
@@ -528,6 +524,7 @@
     @Override
     public void onMultiWindowChanged(boolean inMultiWindow) {
         super.onMultiWindowChanged(inMultiWindow);
+        EventBus.getDefault().send(new ConfigurationChangedEvent());
         RecentsTaskLoader loader = Recents.getTaskLoader();
         RecentsTaskLoadPlan.Options launchOpts = new RecentsTaskLoadPlan.Options();
         launchOpts.loadIcons = false;
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsActivityLaunchState.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsActivityLaunchState.java
index aa1437b..ec4820a 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsActivityLaunchState.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsActivityLaunchState.java
@@ -28,7 +28,8 @@
 public class RecentsActivityLaunchState {
 
     public boolean launchedWithAltTab;
-    public boolean launchedFromAppWithThumbnail;
+    public boolean launchedFromApp;
+    public boolean launchedFromAppDocked;
     public boolean launchedFromHome;
     public boolean launchedFromSearchHome;
     public boolean launchedReuseTaskStackViews;
@@ -42,7 +43,8 @@
     public void reset() {
         launchedFromHome = false;
         launchedFromSearchHome = false;
-        launchedFromAppWithThumbnail = false;
+        launchedFromApp = false;
+        launchedFromAppDocked = false;
         launchedToTaskId = -1;
         launchedWithAltTab = false;
         launchedHasConfigurationChanged = false;
@@ -67,7 +69,7 @@
     public int getInitialFocusTaskIndex(int numTasks) {
         RecentsDebugFlags debugFlags = Recents.getDebugFlags();
         RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState();
-        if (launchedFromAppWithThumbnail) {
+        if (launchedFromApp) {
             if (!launchState.launchedWithAltTab && debugFlags.isFastToggleRecentsEnabled()) {
                 // If fast toggling, focus the front most task so that the next tap will focus the
                 // N-1 task
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java
index 9e43bb4..eec0411 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java
@@ -69,7 +69,6 @@
     public final int smallestWidth;
 
     /** Misc **/
-    public boolean useHardwareLayers;
     public boolean fakeShadows;
     public int svelteLevel;
     public int searchBarSpaceHeightPx;
@@ -80,7 +79,6 @@
         SystemServicesProxy ssp = Recents.getSystemServices();
         Context appContext = context.getApplicationContext();
         Resources res = appContext.getResources();
-        useHardwareLayers = res.getBoolean(R.bool.config_recents_use_hardware_layers);
         fakeShadows = res.getBoolean(R.bool.config_recents_fake_shadows);
         svelteLevel = res.getInteger(R.integer.recents_svelte_level);
 
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsDebugFlags.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsDebugFlags.java
index cd64323..6feda81 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsDebugFlags.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsDebugFlags.java
@@ -39,8 +39,8 @@
         public static final boolean EnableAffiliatedTaskGroups = true;
         // Enables the history
         public static final boolean EnableHistory = false;
-        // Overrides the Tuner flags and enables the fast toggle and timeout
-        public static final boolean EnableFastToggleTimeoutOverride = true;
+        // Overrides the Tuner flags and enables the timeout
+        private static final boolean EnableFastToggleTimeout = false;
 
         // Enables us to create mock recents tasks
         public static final boolean EnableMockTasks = false;
@@ -54,9 +54,9 @@
         public static final int MockTaskGroupsTaskCount = 12;
     }
 
-    private static final String KEY_DISABLE_FAST_TOGGLE = "overview_disable_fast_toggle_via_button";
+    private static final String KEY_ENABLE_PAGING = "overview_enable_paging";
 
-    private boolean mDisableFastToggleRecents;
+    private boolean mEnablePaging;
 
     /**
      * We read the prefs once when we start the activity, then update them as the tuner changes
@@ -65,31 +65,32 @@
     public RecentsDebugFlags(Context context) {
         // Register all our flags, this will also call onTuningChanged() for each key, which will
         // initialize the current state of each flag
-        TunerService.get(context).addTunable(this, KEY_DISABLE_FAST_TOGGLE);
+        TunerService.get(context).addTunable(this, KEY_ENABLE_PAGING);
     }
 
     /**
      * @return whether we are enabling fast toggling.
      */
     public boolean isFastToggleRecentsEnabled() {
-        // These checks EnableFastToggleTimeoutOverride
         SystemServicesProxy ssp = Recents.getSystemServices();
-        if (mDisableFastToggleRecents || ssp.hasFreeformWorkspaceSupport() || ssp.hasDockedTask()
-                || ssp.isTouchExplorationEnabled()) {
+        if (ssp.hasFreeformWorkspaceSupport() || ssp.isTouchExplorationEnabled()) {
             return false;
         }
-        if (Static.EnableFastToggleTimeoutOverride) {
-            return true;
-        }
-        return true;
+        return Static.EnableFastToggleTimeout;
+    }
+
+    /**
+     * @return whether we are enabling paging.
+     */
+    public boolean isPagingEnabled() {
+        return mEnablePaging;
     }
 
     @Override
     public void onTuningChanged(String key, String newValue) {
         switch (key) {
-            case KEY_DISABLE_FAST_TOGGLE:
-                mDisableFastToggleRecents = (newValue != null) &&
-                        (Integer.parseInt(newValue) != 0);
+            case KEY_ENABLE_PAGING:
+                mEnablePaging = (newValue != null) && (Integer.parseInt(newValue) != 0);
                 break;
         }
         EventBus.getDefault().send(new DebugFlagsChangedEvent());
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java
index 86b03c8..58219bf 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java
@@ -16,6 +16,8 @@
 
 package com.android.systemui.recents;
 
+import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID;
+
 import android.app.ActivityManager;
 import android.app.ActivityOptions;
 import android.app.ITaskStackListener;
@@ -66,6 +68,7 @@
 import com.android.systemui.recents.model.TaskStack;
 import com.android.systemui.recents.views.TaskStackLayoutAlgorithm;
 import com.android.systemui.recents.views.TaskStackView;
+import com.android.systemui.recents.views.TaskStackViewScroller;
 import com.android.systemui.recents.views.TaskViewHeader;
 import com.android.systemui.recents.views.TaskViewTransform;
 import com.android.systemui.statusbar.BaseStatusBar;
@@ -74,8 +77,6 @@
 
 import java.util.ArrayList;
 
-import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID;
-
 /**
  * An implementation of the Recents component for the current user.  For secondary users, this can
  * be called remotely from the system user.
@@ -98,6 +99,7 @@
 
     //Used to store tv or non-tv activty for use in creating intents.
     private final String mRecentsIntentActivityName;
+
     /**
      * An implementation of ITaskStackListener, that allows us to listen for changes to the system
      * task stacks and update recents accordingly.
@@ -276,28 +278,24 @@
         mTriggeredFromAltTab = triggeredFromAltTab;
         mDraggingInRecents = draggingInRecents;
         mLaunchedWhileDocking = launchedWhileDockingTask;
-        if (mFastAltTabTrigger.hasTriggered()) {
-            // We are calling this from the doze trigger, so just fall through to show Recents
-            mFastAltTabTrigger.resetTrigger();
+        if (mFastAltTabTrigger.isAsleep()) {
+            // Fast alt-tab duration has elapsed, fall through to showing Recents and reset
+            mFastAltTabTrigger.stopDozing();
         } else if (mFastAltTabTrigger.isDozing()) {
-            // We are dozing but haven't yet triggered, ignore this if this is not another alt-tab,
-            // otherwise, this is an additional tab (alt-tab*), which means that we should trigger
-            // immediately (fall through and disable the pending trigger)
-            // TODO: This is tricky, we need to handle the tab key, but Recents has not yet started
-            //       so we may actually additional signal to handle multiple quick tab cases.  The
-            //       severity of this is inversely proportional to the FAST_ALT_TAB_DELAY_MS
-            //       duration though
+            // Fast alt-tab duration has not elapsed.  If this is triggered by a different
+            // showRecents() call, then ignore that call for now.
+            // TODO: We can not handle quick tabs that happen between the initial showRecents() call
+            //       that started the activity and the activity starting up.  The severity of this
+            //       is inversely proportional to the FAST_ALT_TAB_DELAY_MS duration though.
             if (!triggeredFromAltTab) {
                 return;
             }
             mFastAltTabTrigger.stopDozing();
-        } else {
-            // Otherwise, the doze trigger is not running, and if this is an alt tab, we should
-            // start the trigger and then wait for the hide (or for it to elapse)
-            if (triggeredFromAltTab) {
-                mFastAltTabTrigger.startDozing();
-                return;
-            }
+        } else if (triggeredFromAltTab) {
+            // The fast alt-tab detector is not yet running, so start the trigger and wait for the
+            // hideRecents() call, or for the fast alt-tab duration to elapse
+            mFastAltTabTrigger.startDozing();
+            return;
         }
 
         try {
@@ -321,7 +319,6 @@
 
             // Cancel the fast alt-tab trigger
             mFastAltTabTrigger.stopDozing();
-            mFastAltTabTrigger.resetTrigger();
             return;
         }
 
@@ -348,12 +345,14 @@
             long elapsedTime = SystemClock.elapsedRealtime() - mLastToggleTime;
 
             if (topTask != null && ssp.isRecentsTopMost(topTask, isTopTaskHome)) {
+                RecentsDebugFlags debugFlags = Recents.getDebugFlags();
                 RecentsConfiguration config = Recents.getConfiguration();
                 RecentsActivityLaunchState launchState = config.getLaunchState();
                 if (!launchState.launchedWithAltTab) {
                     // If the user taps quickly
-                    if (ViewConfiguration.getDoubleTapMinTime() < elapsedTime &&
-                            elapsedTime < ViewConfiguration.getDoubleTapTimeout()) {
+                    if (!debugFlags.isPagingEnabled() ||
+                            (ViewConfiguration.getDoubleTapMinTime() < elapsedTime &&
+                                    elapsedTime < ViewConfiguration.getDoubleTapTimeout())) {
                         // Launch the next focused task
                         EventBus.getDefault().post(new LaunchNextTaskRequestEvent());
                     } else {
@@ -574,7 +573,7 @@
                     false /* triggeredFromAltTab */,
                     dragMode == NavigationBarGestureHelper.DRAG_MODE_RECENTS,
                     false /* animate */,
-                    true /* reloadTasks*/);
+                    true /* launchedWhileDockingTask*/);
         }
     }
 
@@ -707,8 +706,7 @@
         // Update the destination rect
         mDummyStackView.updateLayoutForStack(stack);
         final Task toTask = new Task();
-        final TaskViewTransform toTransform = getThumbnailTransitionTransform(stack, stackView,
-                toTask);
+        final TaskViewTransform toTransform = getThumbnailTransitionTransform(stackView, toTask);
         ForegroundThread.getHandler().postAtFrontOfQueue(new Runnable() {
             @Override
             public void run() {
@@ -754,17 +752,20 @@
      * Creates the activity options for an app->recents transition.
      */
     private ActivityOptions getThumbnailTransitionActivityOptions(
-            ActivityManager.RunningTaskInfo topTask, TaskStack stack, TaskStackView stackView) {
+            ActivityManager.RunningTaskInfo topTask, TaskStackView stackView) {
         if (topTask.stackId == FREEFORM_WORKSPACE_STACK_ID) {
             ArrayList<AppTransitionAnimationSpec> specs = new ArrayList<>();
-            stackView.getScroller().setStackScrollToInitialState();
-            ArrayList<Task> tasks = stack.getStackTasks();
+            ArrayList<Task> tasks = stackView.getStack().getStackTasks();
+            TaskStackLayoutAlgorithm stackLayout = stackView.getStackAlgorithm();
+            TaskStackViewScroller stackScroller = stackView.getScroller();
+
+            stackView.updateToInitialState();
+
             for (int i = tasks.size() - 1; i >= 0; i--) {
                 Task task = tasks.get(i);
                 if (task.isFreeformTask()) {
-                    mTmpTransform = stackView.getStackAlgorithm()
-                            .getStackTransformScreenCoordinates(task,
-                                    stackView.getScroller().getStackScroll(), mTmpTransform, null);
+                    mTmpTransform = stackLayout.getStackTransformScreenCoordinates(task,
+                                    stackScroller.getStackScroll(), mTmpTransform, null);
                     Rect toTaskRect = new Rect();
                     mTmpTransform.rect.round(toTaskRect);
                     Bitmap thumbnail = getThumbnailBitmap(topTask, task, mTmpTransform);
@@ -778,8 +779,7 @@
         } else {
             // Update the destination rect
             Task toTask = new Task();
-            TaskViewTransform toTransform = getThumbnailTransitionTransform(stack, stackView,
-                    toTask);
+            TaskViewTransform toTransform = getThumbnailTransitionTransform(stackView, toTask);
             RectF toTaskRect = toTransform.rect;
             Bitmap thumbnail = getThumbnailBitmap(topTask, toTask, toTransform);
             if (thumbnail != null) {
@@ -811,9 +811,10 @@
     /**
      * Returns the transition rect for the given task id.
      */
-    private TaskViewTransform getThumbnailTransitionTransform(TaskStack stack,
-            TaskStackView stackView, Task runningTaskOut) {
+    private TaskViewTransform getThumbnailTransitionTransform(TaskStackView stackView,
+            Task runningTaskOut) {
         // Find the running task in the TaskStack
+        TaskStack stack = stackView.getStack();
         Task launchTask = stack.getLaunchTarget();
         if (launchTask != null) {
             runningTaskOut.copyFrom(launchTask);
@@ -824,7 +825,7 @@
         }
 
         // Get the transform for the running task
-        stackView.getScroller().setStackScrollToInitialState();
+        stackView.updateToInitialState();
         mTmpTransform = stackView.getStackAlgorithm().getStackTransformScreenCoordinates(launchTask,
                 stackView.getScroller().getStackScroll(), mTmpTransform, null);
         return mTmpTransform;
@@ -852,6 +853,7 @@
                     c.scale(toTransform.scale, toTransform.scale);
                     mHeaderBar.rebindToTask(toTask, false /* touchExplorationEnabled */,
                             disabledInSafeMode);
+                    mHeaderBar.setDimAlpha(toTransform.dimAlpha);
                     mHeaderBar.draw(c);
                     c.setBitmap(null);
                 }
@@ -900,8 +902,7 @@
 
         if (useThumbnailTransition) {
             // Try starting with a thumbnail transition
-            ActivityOptions opts = getThumbnailTransitionActivityOptions(topTask, stack,
-                    mDummyStackView);
+            ActivityOptions opts = getThumbnailTransitionActivityOptions(topTask, mDummyStackView);
             if (opts != null) {
                 startRecentsActivity(topTask, opts, false /* fromHome */,
                         false /* fromSearchHome */, true /* fromThumbnail */, stackVr);
@@ -948,14 +949,15 @@
      * Starts the recents activity.
      */
     private void startRecentsActivity(ActivityManager.RunningTaskInfo topTask,
-              ActivityOptions opts, boolean fromHome, boolean fromSearchHome, boolean fromThumbnail,
-              TaskStackLayoutAlgorithm.VisibilityReport vr) {
+                ActivityOptions opts, boolean fromHome, boolean fromSearchHome,
+                boolean fromThumbnail, TaskStackLayoutAlgorithm.VisibilityReport vr) {
         // Update the configuration based on the launch options
         RecentsConfiguration config = Recents.getConfiguration();
         RecentsActivityLaunchState launchState = config.getLaunchState();
         launchState.launchedFromHome = fromSearchHome || fromHome;
         launchState.launchedFromSearchHome = fromSearchHome;
-        launchState.launchedFromAppWithThumbnail = fromThumbnail;
+        launchState.launchedFromApp = fromThumbnail || mLaunchedWhileDocking;
+        launchState.launchedFromAppDocked = mLaunchedWhileDocking;
         launchState.launchedToTaskId = (topTask != null) ? topTask.id : -1;
         launchState.launchedWithAltTab = mTriggeredFromAltTab;
         launchState.launchedReuseTaskStackViews = mCanReuseTaskStackViews;
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/activity/ConfigurationChangedEvent.java b/packages/SystemUI/src/com/android/systemui/recents/events/activity/ConfigurationChangedEvent.java
new file mode 100644
index 0000000..0ad4681
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/activity/ConfigurationChangedEvent.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.recents.events.activity;
+
+import com.android.systemui.recents.events.EventBus;
+
+/**
+ * This is sent when the Recents activity configuration has changed.
+ */
+public class ConfigurationChangedEvent extends EventBus.AnimatedEvent {
+    // Simple event
+}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java b/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java
index 95aa10f..574ea03 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java
@@ -30,7 +30,7 @@
     @ViewDebug.ExportedProperty(category="recents")
     boolean mIsDozing;
     @ViewDebug.ExportedProperty(category="recents")
-    boolean mHasTriggered;
+    boolean mIsAsleep;
     @ViewDebug.ExportedProperty(category="recents")
     int mDozeDurationMilliseconds;
     Runnable mOnSleepRunnable;
@@ -40,7 +40,7 @@
         @Override
         public void run() {
             mIsDozing = false;
-            mHasTriggered = true;
+            mIsAsleep = true;
             mOnSleepRunnable.run();
         }
     };
@@ -56,7 +56,7 @@
      */
     public void startDozing() {
         forcePoke();
-        mHasTriggered = false;
+        mIsAsleep = false;
     }
 
     /**
@@ -65,6 +65,7 @@
     public void stopDozing() {
         mHandler.removeCallbacks(mDozeRunnable);
         mIsDozing = false;
+        mIsAsleep = false;
     }
 
     /**
@@ -99,12 +100,7 @@
     }
 
     /** Returns whether the trigger has fired at least once. */
-    public boolean hasTriggered() {
-        return mHasTriggered;
-    }
-
-    /** Resets the doze trigger state. */
-    public void resetTrigger() {
-        mHasTriggered = false;
+    public boolean isAsleep() {
+        return mIsAsleep;
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/tv/RecentsTvActivity.java b/packages/SystemUI/src/com/android/systemui/recents/tv/RecentsTvActivity.java
index 0c48cf7..4ba9efa 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/tv/RecentsTvActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/tv/RecentsTvActivity.java
@@ -40,7 +40,6 @@
 import com.android.systemui.recents.events.activity.EnterRecentsWindowLastAnimationFrameEvent;
 import com.android.systemui.recents.events.activity.HideRecentsEvent;
 import com.android.systemui.recents.events.activity.LaunchTaskFailedEvent;
-import com.android.systemui.recents.events.activity.TaskStackUpdatedEvent;
 import com.android.systemui.recents.events.activity.ToggleRecentsEvent;
 import com.android.systemui.recents.events.component.RecentsVisibilityChangedEvent;
 import com.android.systemui.recents.events.ui.AllTaskViewsDismissedEvent;
@@ -284,7 +283,7 @@
         RecentsConfiguration config = Recents.getConfiguration();
         RecentsActivityLaunchState launchState = config.getLaunchState();
         boolean wasLaunchedByAm = !launchState.launchedFromHome &&
-                !launchState.launchedFromAppWithThumbnail;
+                !launchState.launchedFromApp;
         if (launchState.launchedHasConfigurationChanged || wasLaunchedByAm) {
             EventBus.getDefault().send(new EnterRecentsWindowAnimationCompletedEvent());
         }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/FreeformWorkspaceLayoutAlgorithm.java b/packages/SystemUI/src/com/android/systemui/recents/views/FreeformWorkspaceLayoutAlgorithm.java
index 4359101..72b914c 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/FreeformWorkspaceLayoutAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/FreeformWorkspaceLayoutAlgorithm.java
@@ -37,6 +37,13 @@
     private int mTaskPadding;
 
     public FreeformWorkspaceLayoutAlgorithm(Context context) {
+        reloadOnConfigurationChange(context);
+    }
+
+    /**
+     * Reloads the layout for the current configuration.
+     */
+    public void reloadOnConfigurationChange(Context context) {
         // This is applied to the edges of each task
         mTaskPadding = context.getResources().getDimensionPixelSize(
                 R.dimen.recents_freeform_workspace_task_padding) / 2;
@@ -72,8 +79,7 @@
                 }
                 // Bound the task width to the workspace width so that at the worst case, it will
                 // fit its own row
-                normalizedTaskWidths[i] = Math.min(rowTaskWidth,
-                        normalizedWorkspaceWidth);
+                normalizedTaskWidths[i] = Math.min(rowTaskWidth, normalizedWorkspaceWidth);
             }
 
             // Determine the scale to best fit each of the tasks in the workspace
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsTransitionHelper.java b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsTransitionHelper.java
index 37b2859..e5022a4 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsTransitionHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsTransitionHelper.java
@@ -105,9 +105,6 @@
             animStartedListener = new ActivityOptions.OnAnimationStartedListener() {
                 @Override
                 public void onAnimationStarted() {
-                    // If we are launching into another task, cancel the previous task's
-                    // window transition
-                    EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(task));
                     EventBus.getDefault().send(new ExitRecentsWindowFirstAnimationFrameEvent());
 
                     if (screenPinningRequested) {
@@ -149,6 +146,10 @@
                         animStartedListener);
             }
         }
+
+        // If we are launching into another task, cancel the previous task's
+        // window transition
+        EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(task));
     }
 
     /**
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
index 5dde926..10f491e 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
@@ -192,7 +192,7 @@
         // If we are already occluded by the app, then just set the default background scrim now.
         // Otherwise, defer until the enter animation completes to animate the scrim with the
         // tasks for the home animation.
-        if (launchState.launchedWhileDocking || launchState.launchedFromAppWithThumbnail
+        if (launchState.launchedWhileDocking || launchState.launchedFromApp
                 || mStack.getTaskCount() == 0) {
             mBackgroundScrim.setAlpha((int) (DEFAULT_SCRIM_ALPHA * 255));
         } else {
@@ -671,7 +671,7 @@
 
     public final void onBusEvent(EnterRecentsWindowAnimationCompletedEvent event) {
         RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState();
-        if (!launchState.launchedWhileDocking && !launchState.launchedFromAppWithThumbnail
+        if (!launchState.launchedWhileDocking && !launchState.launchedFromApp
                 && mStack.getTaskCount() > 0) {
             animateBackgroundScrim(DEFAULT_SCRIM_ALPHA,
                     TaskStackAnimationHelper.ENTER_FROM_HOME_TRANSLATION_DURATION);
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackAnimationHelper.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackAnimationHelper.java
index d152010..758f4d82 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackAnimationHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackAnimationHelper.java
@@ -56,8 +56,8 @@
         /**
          * Callback to start the animation for the launch target {@link TaskView}.
          */
-        void onStartLaunchTargetEnterAnimation(int duration, boolean screenPinningEnabled,
-                ReferenceCountedTrigger postAnimationTrigger);
+        void onStartLaunchTargetEnterAnimation(TaskViewTransform transform, int duration,
+                boolean screenPinningEnabled, ReferenceCountedTrigger postAnimationTrigger);
 
         /**
          * Callback to start the animation for the launch target {@link TaskView} when it is
@@ -141,7 +141,7 @@
                 tv.setVisibility(View.INVISIBLE);
             } else if (launchState.launchedHasConfigurationChanged) {
                 // Just load the views as-is
-            } else if (launchState.launchedFromAppWithThumbnail) {
+            } else if (launchState.launchedFromApp) {
                 if (task.isLaunchTarget) {
                     tv.onPrepareLaunchTargetForEnterAnimation();
                 } else if (currentTaskOccludesLaunchTarget) {
@@ -205,10 +205,11 @@
             stackLayout.getStackTransform(task, stackScroller.getStackScroll(), mTmpTransform,
                     null);
 
-            if (launchState.launchedFromAppWithThumbnail) {
+            if (launchState.launchedFromApp) {
                 if (task.isLaunchTarget) {
-                    tv.onStartLaunchTargetEnterAnimation(taskViewEnterFromAppDuration,
-                            mStackView.mScreenPinningEnabled, postAnimationTrigger);
+                    tv.onStartLaunchTargetEnterAnimation(mTmpTransform,
+                            taskViewEnterFromAppDuration, mStackView.mScreenPinningEnabled,
+                            postAnimationTrigger);
                 } else {
                     // Animate the task up if it was occluding the launch target
                     if (currentTaskOccludesLaunchTarget) {
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java
index 261b6f6..b60fca8c1 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java
@@ -29,6 +29,7 @@
 import com.android.systemui.recents.Recents;
 import com.android.systemui.recents.RecentsActivityLaunchState;
 import com.android.systemui.recents.RecentsConfiguration;
+import com.android.systemui.recents.RecentsDebugFlags;
 import com.android.systemui.recents.misc.FreePathInterpolator;
 import com.android.systemui.recents.misc.SystemServicesProxy;
 import com.android.systemui.recents.misc.Utilities;
@@ -36,6 +37,7 @@
 import com.android.systemui.recents.model.TaskStack;
 
 import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Used to describe a visible range that can be normalized to [0, 1].
@@ -220,6 +222,10 @@
     private Range mUnfocusedRange;
     private Range mFocusedRange;
 
+    // The initial offset from the top of the stack
+    @ViewDebug.ExportedProperty(category="recents")
+    private int mInitialTopPeekHeight;
+
     // The offset from the top when scrolled to the top of the stack
     @ViewDebug.ExportedProperty(category="recents")
     private int mFocusedTopPeekHeight;
@@ -231,6 +237,10 @@
     @ViewDebug.ExportedProperty(category="recents")
     private int mStackTopOffset;
 
+    // The height of the header bar
+    @ViewDebug.ExportedProperty(category="recents")
+    private int mHeaderBarHeight;
+
     // The offset from the bottom of the stack to the bottom of the bounds when the stack is
     // scrolled to the front
     @ViewDebug.ExportedProperty(category="recents")
@@ -249,6 +259,9 @@
     private FreePathInterpolator mUnfocusedDimCurveInterpolator;
     private FreePathInterpolator mFocusedDimCurveInterpolator;
 
+    // Indexed from the front of the stack, the normalized x in the unfocused range for each task
+    private float[] mInitialNormX;
+
     // The state of the stack focus (0..1), which controls the transition of the stack from the
     // focused to non-focused state
     @ViewDebug.ExportedProperty(category="recents")
@@ -292,23 +305,32 @@
     TaskViewTransform mFrontOfStackTransform = new TaskViewTransform();
 
     public TaskStackLayoutAlgorithm(Context context, TaskStackLayoutAlgorithmCallbacks cb) {
-        Resources res = context.getResources();
         mContext = context;
         mCb = cb;
+        mFreeformLayoutAlgorithm = new FreeformWorkspaceLayoutAlgorithm(context);
+        reloadOnConfigurationChange(context);
+    }
 
+    /**
+     * Reloads the layout for the current configuration.
+     */
+    public void reloadOnConfigurationChange(Context context) {
+        Resources res = context.getResources();
         mFocusedRange = new Range(res.getFloat(R.integer.recents_layout_focused_range_min),
                 res.getFloat(R.integer.recents_layout_focused_range_max));
         mUnfocusedRange = new Range(res.getFloat(R.integer.recents_layout_unfocused_range_min),
                 res.getFloat(R.integer.recents_layout_unfocused_range_max));
-        mFocusState = getDefaultFocusState();
+        mFocusState = getInitialFocusState();
+        mInitialTopPeekHeight = res.getDimensionPixelSize(R.dimen.recents_initial_top_peek_size);
         mFocusedTopPeekHeight =
                 res.getDimensionPixelSize(R.dimen.recents_layout_focused_top_peek_size);
         mFocusedBottomTaskPeekHeight =
                 res.getDimensionPixelSize(R.dimen.recents_layout_focused_bottom_task_peek_size);
+        mHeaderBarHeight = res.getDimensionPixelSize(R.dimen.recents_task_bar_height);
 
         mMinTranslationZ = res.getDimensionPixelSize(R.dimen.recents_task_view_z_min);
         mMaxTranslationZ = res.getDimensionPixelSize(R.dimen.recents_task_view_z_max);
-        mFreeformLayoutAlgorithm = new FreeformWorkspaceLayoutAlgorithm(context);
+        mFreeformLayoutAlgorithm.reloadOnConfigurationChange(context);
     }
 
     /**
@@ -316,7 +338,7 @@
      */
     public void reset() {
         mTaskIndexOverrideMap.clear();
-        setFocusState(getDefaultFocusState());
+        setFocusState(getInitialFocusState());
     }
 
     /**
@@ -439,46 +461,87 @@
             mTaskIndexMap.put(task.key.id, i);
         }
 
-        // Calculate the min/max scroll
-        if (getDefaultFocusState() > 0f) {
-            mMinScrollP = 0;
-            mMaxScrollP = Math.max(mMinScrollP, mNumStackTasks - 1);
-        } else {
-            if (!ssp.hasFreeformWorkspaceSupport() && mNumStackTasks == 1) {
-                mMinScrollP = mMaxScrollP = 0;
-            } else {
-                float bottomOffsetPct = (float) (mStackBottomOffset + mTaskRect.height()) /
-                        mStackRect.height();
-                float normX = mUnfocusedCurveInterpolator.getX(bottomOffsetPct);
-                mMinScrollP = 0;
-                mMaxScrollP = Math.max(mMinScrollP, (mNumStackTasks - 1) -
-                        Math.max(0, mUnfocusedRange.getAbsoluteX(normX)));
-            }
-        }
-
+        // Update the freeform tasks
         if (!freeformTasks.isEmpty()) {
             mFreeformLayoutAlgorithm.update(freeformTasks, this);
-            mInitialScrollP = mMaxScrollP;
-        } else {
-            Task launchTask = stack.getLaunchTarget();
-            int launchTaskIndex = launchTask != null
-                    ? stack.indexOfStackTask(launchTask)
-                    : mNumStackTasks - 1;
-            if (!ssp.hasFreeformWorkspaceSupport() && mNumStackTasks == 1) {
-                mInitialScrollP = mMinScrollP;
-            } else if (getDefaultFocusState() > 0f) {
-                if (launchState.launchedFromHome) {
-                    mInitialScrollP = Utilities.clamp(launchTaskIndex, mMinScrollP, mMaxScrollP);
-                } else {
-                    mInitialScrollP = Utilities.clamp(launchTaskIndex - 1, mMinScrollP,
-                            mMaxScrollP);
-                }
+        }
+
+        // Calculate the min/max/initial scroll
+        Task launchTask = stack.getLaunchTarget();
+        int launchTaskIndex = launchTask != null
+                ? stack.indexOfStackTask(launchTask)
+                : mNumStackTasks - 1;
+        if (getInitialFocusState() == STATE_FOCUSED) {
+            mMinScrollP = 0;
+            mMaxScrollP = Math.max(mMinScrollP, mNumStackTasks - 1);
+            if (launchState.launchedFromHome) {
+                mInitialScrollP = Utilities.clamp(launchTaskIndex, mMinScrollP, mMaxScrollP);
             } else {
-                float offsetPct = (float) (mTaskRect.height() / 3) / mStackRect.height();
-                float normX = mUnfocusedCurveInterpolator.getX(offsetPct);
-                mInitialScrollP = Utilities.clamp(launchTaskIndex -
-                        mUnfocusedRange.getAbsoluteX(normX), mMinScrollP, mMaxScrollP);
+                mInitialScrollP = Utilities.clamp(launchTaskIndex - 1, mMinScrollP, mMaxScrollP);
             }
+        } else if (!ssp.hasFreeformWorkspaceSupport() && mNumStackTasks == 1) {
+            // If there is one stack task, ignore the min/max/initial scroll positions
+            mMinScrollP = 0;
+            mMaxScrollP = 0;
+            mInitialScrollP = 0;
+        } else {
+            // Set the max scroll to be the point where the front most task is visible with the
+            // stack bottom offset
+            int maxBottomOffset = mStackBottomOffset + mTaskRect.height();
+            float maxBottomOffsetPct = (float) maxBottomOffset / mStackRect.height();
+            float maxBottomNormX = mUnfocusedCurveInterpolator.getX(maxBottomOffsetPct);
+            mUnfocusedRange.offset(0f);
+            mMinScrollP = 0;
+            mMaxScrollP = Math.max(mMinScrollP, (mNumStackTasks - 1) -
+                    Math.max(0, mUnfocusedRange.getAbsoluteX(maxBottomNormX)));
+            boolean scrollToFront = launchState.launchedFromHome ||
+                    launchState.launchedFromAppDocked;
+            if (scrollToFront) {
+                mInitialScrollP = Utilities.clamp(launchTaskIndex, mMinScrollP, mMaxScrollP);
+            } else {
+                mInitialScrollP = Utilities.clamp(launchTaskIndex - 1, mMinScrollP, mMaxScrollP);
+            }
+
+            // Set the initial scroll to the predefined state (which differs from the stack)
+            int initialPeekOffset = mStackRect.height() - mInitialTopPeekHeight;
+            float initialPeekOffsetPct = (float) initialPeekOffset / mStackRect.height();
+            float initialPeekOffsetNormX = mUnfocusedCurveInterpolator.getX(initialPeekOffsetPct);
+            float initialFocusedOffset = mStackRect.height() - mInitialTopPeekHeight -
+                    (mHeaderBarHeight * 1f) + 1;
+            float initialFocusedOffsetPct = (float) initialFocusedOffset / mStackRect.height();
+            float initialFocusedNormX = mUnfocusedCurveInterpolator.getX(initialFocusedOffsetPct);
+            int initialBottomOffset = mStackBottomOffset + mHeaderBarHeight;
+            float initialBottomOffsetPct = (float) initialBottomOffset / mStackRect.height();
+            float initialBottomNormX = mUnfocusedCurveInterpolator.getX(initialBottomOffsetPct);
+            /*
+            // If we want to offset the top card slightly
+            mInitialNormX = scrollToFront
+                    ? new float[] { initialFocusedNormX, initialPeekOffsetNormX, 0f }
+                    : new float[] { initialBottomNormX, initialFocusedNormX,
+                            initialPeekOffsetNormX, 0f };
+            */
+            mInitialNormX = scrollToFront
+                    ? new float[] { initialFocusedNormX, initialPeekOffsetNormX, 0f }
+                    : new float[] { initialBottomNormX, 0.5f, 0f };
+        }
+    }
+
+    public void updateToInitialState(List<Task> tasks) {
+        if (mInitialNormX == null) {
+            return;
+        }
+
+        RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState();
+        mUnfocusedRange.offset(0f);
+        int taskCount = tasks.size();
+        for (int i = taskCount - 1; i >= 0; i--) {
+            int indexFromFront = taskCount - i - 1;
+            if (indexFromFront >= mInitialNormX.length) {
+                break;
+            }
+            float newTaskProgress = mInitialScrollP +
+                    mUnfocusedRange.getAbsoluteX(mInitialNormX[indexFromFront]);
+            mTaskIndexOverrideMap.put(tasks.get(i).key.id, newTaskProgress);
         }
     }
 
@@ -500,6 +563,10 @@
         }
     }
 
+    public void clearUnfocusedTaskOverrides() {
+        mTaskIndexOverrideMap.clear();
+    }
+
     /**
      * Updates this stack when a scroll happens.
      */
@@ -523,7 +590,7 @@
             } else {
                 // Scrolling override x away from x, we should still move the scroll towards x
                 float deltaX = overrideX - x;
-                newOverrideX = Math.signum(deltaX) * (Math.abs(deltaX) - deltaScroll);
+                newOverrideX = Math.signum(deltaX) * (Math.abs(deltaX) - Math.abs(deltaScroll));
                 mTaskIndexOverrideMap.put(taskId, x + newOverrideX);
             }
         }
@@ -532,8 +599,13 @@
     /**
      * Returns the default focus state.
      */
-    public int getDefaultFocusState() {
-        return STATE_FOCUSED;
+    public int getInitialFocusState() {
+        RecentsDebugFlags debugFlags = Recents.getDebugFlags();
+        if (debugFlags.isPagingEnabled()) {
+            return STATE_FOCUSED;
+        } else {
+            return STATE_UNFOCUSED;
+        }
     }
 
     /**
@@ -577,7 +649,7 @@
         // Otherwise, walk backwards in the stack and count the number of tasks and visible
         // thumbnails and add that to the total freeform task count
         TaskViewTransform tmpTransform = new TaskViewTransform();
-        Range currentRange = getDefaultFocusState() > 0f ? mFocusedRange : mUnfocusedRange;
+        Range currentRange = getInitialFocusState() > 0f ? mFocusedRange : mUnfocusedRange;
         currentRange.offset(mInitialScrollP);
         int taskBarHeight = mContext.getResources().getDimensionPixelSize(
                 R.dimen.recents_task_bar_height);
@@ -635,11 +707,19 @@
     public TaskViewTransform getStackTransform(Task task, float stackScroll,
             TaskViewTransform transformOut, TaskViewTransform frontTransform) {
         return getStackTransform(task, stackScroll, mFocusState, transformOut, frontTransform,
-                false /* forceUpdate */);
+                false /* forceUpdate */, false /* ignoreTaskOverrides */);
+    }
+
+    public TaskViewTransform getStackTransform(Task task, float stackScroll,
+            TaskViewTransform transformOut, TaskViewTransform frontTransform,
+            boolean ignoreTaskOverrides) {
+        return getStackTransform(task, stackScroll, mFocusState, transformOut, frontTransform,
+                false /* forceUpdate */, ignoreTaskOverrides);
     }
 
     public TaskViewTransform getStackTransform(Task task, float stackScroll, int focusState,
-        TaskViewTransform transformOut, TaskViewTransform frontTransform, boolean forceUpdate) {
+            TaskViewTransform transformOut, TaskViewTransform frontTransform, boolean forceUpdate,
+            boolean ignoreTaskOverrides) {
         if (mFreeformLayoutAlgorithm.isTransformAvailable(task, this)) {
             mFreeformLayoutAlgorithm.getTransform(task, transformOut, this);
             return transformOut;
@@ -649,7 +729,9 @@
                 transformOut.reset();
                 return transformOut;
             }
-            float taskProgress = getStackScrollForTask(task);
+            float taskProgress = ignoreTaskOverrides
+                    ? mTaskIndexMap.get(task.key.id, 0)
+                    : getStackScrollForTask(task);
             getStackTransform(taskProgress, stackScroll, focusState, transformOut,
                     frontTransform, false /* ignoreSingleTaskCase */, forceUpdate);
             return transformOut;
@@ -851,8 +933,8 @@
         // The unfocused dim interpolator starts at max dim, reduces to zero at 0.5 (the focused
         // task), then goes back to max dim towards the front of the stack
         p.moveTo(0f, MAX_DIM);
-        p.cubicTo(0f, 0.1f, 0.4f, 0f, 0.5f, 0f);
-        p.cubicTo(0.6f, 0f, 0.9f, MAX_DIM - 0.1f, 1f, MAX_DIM / 2f);
+        p.cubicTo(0.1f, MAX_DIM, 0.4f, 0.0f, 0.5f, 0f);
+        p.cubicTo(0.6f, 0f, 0.9f, MAX_DIM / 2f, 1f, MAX_DIM / 2f);
         return p;
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
index e1a81c8..c2bfc28 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
@@ -35,7 +35,6 @@
 import android.util.ArrayMap;
 import android.util.ArraySet;
 import android.util.MutableBoolean;
-import android.util.SparseBooleanArray;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
@@ -56,6 +55,7 @@
 import com.android.systemui.recents.RecentsDebugFlags;
 import com.android.systemui.recents.events.EventBus;
 import com.android.systemui.recents.events.activity.CancelEnterRecentsWindowAnimationEvent;
+import com.android.systemui.recents.events.activity.ConfigurationChangedEvent;
 import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted;
 import com.android.systemui.recents.events.activity.EnterRecentsTaskStackAnimationCompletedEvent;
 import com.android.systemui.recents.events.activity.EnterRecentsWindowAnimationCompletedEvent;
@@ -73,7 +73,6 @@
 import com.android.systemui.recents.events.ui.AllTaskViewsDismissedEvent;
 import com.android.systemui.recents.events.ui.DeleteTaskDataEvent;
 import com.android.systemui.recents.events.ui.DismissTaskViewEvent;
-import com.android.systemui.recents.events.ui.StackViewScrolledEvent;
 import com.android.systemui.recents.events.ui.TaskViewDismissedEvent;
 import com.android.systemui.recents.events.ui.UpdateFreeformTaskViewVisibilityEvent;
 import com.android.systemui.recents.events.ui.UserInteractionEvent;
@@ -274,10 +273,18 @@
     }
 
     /** Returns the task stack. */
-    TaskStack getStack() {
+    public TaskStack getStack() {
         return mStack;
     }
 
+    /**
+     * Updates this TaskStackView to the initial state.
+     */
+    public void updateToInitialState() {
+        mStackScroller.setStackScrollToInitialState();
+        mLayoutAlgorithm.updateToInitialState(mStack.getStackTasks());
+    }
+
     /** Updates the list of task views */
     void updateTaskViewsList() {
         mTaskViews.clear();
@@ -355,7 +362,6 @@
         mAwaitingFirstLayout = true;
         mEnterAnimationComplete = false;
         mUIDozeTrigger.stopDozing();
-        mUIDozeTrigger.resetTrigger();
         mStackScroller.reset();
         mLayoutAlgorithm.reset();
         readSystemFlags();
@@ -410,7 +416,7 @@
      */
     int[] computeVisibleTaskTransforms(ArrayList<TaskViewTransform> taskTransforms,
             ArrayList<Task> tasks, float curStackScroll, float targetStackScroll,
-            ArraySet<Task.TaskKey> ignoreTasksSet) {
+            ArraySet<Task.TaskKey> ignoreTasksSet, boolean ignoreTaskOverrides) {
         int taskCount = tasks.size();
         int[] visibleTaskRange = mTmpIntPair;
         visibleTaskRange[0] = -1;
@@ -430,7 +436,7 @@
 
             // Calculate the current and (if necessary) the target transform for the task
             transform = mLayoutAlgorithm.getStackTransform(task, curStackScroll,
-                    taskTransforms.get(i), frontTransform);
+                    taskTransforms.get(i), frontTransform, ignoreTaskOverrides);
             if (useTargetStackScroll && !transform.visible) {
                 // If we have a target stack scroll and the task is not currently visible, then we
                 // just update the transform at the new scroll
@@ -468,11 +474,13 @@
 
     /**
      * Binds the visible {@link TaskView}s at the given target scroll.
-     *
-     * @see #bindVisibleTaskViews(float, ArraySet<Task.TaskKey>)
      */
     void bindVisibleTaskViews(float targetStackScroll) {
-        bindVisibleTaskViews(targetStackScroll, mIgnoreTasks);
+        bindVisibleTaskViews(targetStackScroll, mIgnoreTasks, false /* ignoreTaskOverrides */);
+    }
+
+    void bindVisibleTaskViews(float targetStackScroll, boolean ignoreTaskOverrides) {
+        bindVisibleTaskViews(targetStackScroll, mIgnoreTasks, ignoreTaskOverrides);
     }
 
     /**
@@ -487,12 +495,16 @@
      *                          target stack scroll.
      * @param ignoreTasksSet The set of tasks to ignore in this rebinding of the visible
      *                       {@link TaskView}s
+     * @param ignoreTaskOverrides If set, the visible task computation will get the transforms for
+     *                            tasks at their non-overridden task progress
      */
-    void bindVisibleTaskViews(float targetStackScroll, ArraySet<Task.TaskKey> ignoreTasksSet) {
+    void bindVisibleTaskViews(float targetStackScroll, ArraySet<Task.TaskKey> ignoreTasksSet,
+            boolean ignoreTaskOverrides) {
         // Get all the task transforms
         ArrayList<Task> tasks = mStack.getStackTasks();
         int[] visibleTaskRange = computeVisibleTaskTransforms(mCurrentTaskTransforms, tasks,
-                mStackScroller.getStackScroll(), targetStackScroll, ignoreTasksSet);
+                mStackScroller.getStackScroll(), targetStackScroll, ignoreTasksSet,
+                ignoreTaskOverrides);
 
         // Return all the invisible children to the pool
         mTmpTaskViewMap.clear();
@@ -605,7 +617,8 @@
         cancelAllTaskViewAnimations();
 
         // Synchronize the current set of TaskViews
-        bindVisibleTaskViews(mStackScroller.getStackScroll(), ignoreTasksSet);
+        bindVisibleTaskViews(mStackScroller.getStackScroll(), ignoreTasksSet,
+                false /* ignoreTaskOverrides */);
 
         // Animate them to their final transforms with the given animation
         List<TaskView> taskViews = getTaskViews();
@@ -657,7 +670,8 @@
                 transform.fillIn(tv);
             } else {
                 mLayoutAlgorithm.getStackTransform(task, mStackScroller.getStackScroll(),
-                        focusState, transform, null, true /* forceUpdate */);
+                        focusState, transform, null, true /* forceUpdate */,
+                        false /* ignoreTaskOverrides */);
             }
             transform.visible = true;
         }
@@ -674,7 +688,7 @@
             Task task = tasks.get(i);
             TaskViewTransform transform = transformsOut.get(i);
             mLayoutAlgorithm.getStackTransform(task, stackScroll, focusState, transform, null,
-                    true /* forceUpdate */);
+                    true /* forceUpdate */, true /* ignoreTaskOverrides */);
             transform.visible = true;
         }
     }
@@ -759,9 +773,7 @@
                 }
             }
             tv.getViewBounds().setClipBottom(clipBottom);
-            if (!config.useHardwareLayers) {
-                tv.mThumbnailView.updateThumbnailVisibility(clipBottom - tv.getPaddingBottom());
-            }
+            tv.mThumbnailView.updateThumbnailVisibility(clipBottom - tv.getPaddingBottom());
             prevVisibleTv = tv;
         }
         mTaskViewsClipDirty = false;
@@ -860,6 +872,7 @@
                     cancelAllTaskViewAnimations();
                 }
 
+                mLayoutAlgorithm.clearUnfocusedTaskOverrides();
                 willScroll = mAnimationHelper.startScrollToFocusedTaskAnimation(newFocusedTask,
                         requestViewFocus);
             } else {
@@ -1162,11 +1175,16 @@
 
         // If this is the first layout, then scroll to the front of the stack, then update the
         // TaskViews with the stack so that we can lay them out
-        if (mAwaitingFirstLayout) {
-            mStackScroller.setStackScrollToInitialState();
+        // TODO: The second check is a workaround for wacky layouts that we get while docking via
+        //       long pressing the recents button
+        if (mAwaitingFirstLayout ||
+                (mStackScroller.getStackScroll() == mLayoutAlgorithm.mInitialScrollP)) {
+            updateToInitialState();
         }
+
         // Rebind all the views, including the ignore ones
-        bindVisibleTaskViews(mStackScroller.getStackScroll(), EMPTY_TASK_SET);
+        bindVisibleTaskViews(mStackScroller.getStackScroll(), EMPTY_TASK_SET,
+                false /* ignoreTaskOverrides */);
 
         // Measure each of the TaskViews
         mTmpTaskViews.clear();
@@ -1458,7 +1476,7 @@
         Recents.getTaskLoader().loadTaskData(task, true /* fetchAndInvalidateThumbnails */);
 
         // If the doze trigger has already fired, then update the state for this task view
-        if (mUIDozeTrigger.hasTriggered()) {
+        if (mUIDozeTrigger.isAsleep()) {
             tv.setNoUserInteractionState();
         }
 
@@ -1859,6 +1877,12 @@
         });
     }
 
+    public final void onBusEvent(ConfigurationChangedEvent event) {
+        mLayoutAlgorithm.reloadOnConfigurationChange(getContext());
+        mLayoutAlgorithm.initialize(mStackBounds,
+                TaskStackLayoutAlgorithm.StackState.getStackStateForStack(mStack));
+    }
+
     /**
      * Removes the task from the stack, and updates the focus to the next task in the stack if the
      * removed TaskView was focused.
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewScroller.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewScroller.java
index 333df9d..ad46abd 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewScroller.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewScroller.java
@@ -115,13 +115,8 @@
      * @return whether the stack progress changed.
      */
     public boolean setStackScrollToInitialState() {
-        SystemServicesProxy ssp = Recents.getSystemServices();
         float prevStackScrollP = mStackScrollP;
-        if (ssp.hasDockedTask()) {
-            setStackScroll(mLayoutAlgorithm.mMaxScrollP);
-        } else {
-            setStackScroll(mLayoutAlgorithm.mInitialScrollP);
-        }
+        setStackScroll(mLayoutAlgorithm.mInitialScrollP);
         return Float.compare(prevStackScrollP, mStackScrollP) != 0;
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java
index 20933ee..52f8fc8 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java
@@ -446,7 +446,7 @@
             }
 
             // Pick up the newly visible views, not including the deleting tasks
-            mSv.bindVisibleTaskViews(newStackScroll);
+            mSv.bindVisibleTaskViews(newStackScroll, true /* ignoreTaskOverrides */);
 
             // Get the final set of task transforms (with task removed)
             mSv.getLayoutTaskTransforms(newStackScroll, TaskStackLayoutAlgorithm.STATE_UNFOCUSED,
@@ -486,6 +486,7 @@
         mSv.getScroller().setStackScroll(mTargetStackScroll, null);
         // Update the focus state to the final focus state
         mSv.getStackAlgorithm().setFocusState(TaskStackLayoutAlgorithm.STATE_UNFOCUSED);
+        mSv.getStackAlgorithm().clearUnfocusedTaskOverrides();
         // Remove the task view from the stack
         EventBus.getDefault().send(new TaskViewDismissedEvent(tv.getTask(), tv));
         // Stop tracking this deletion animation
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
index 2e7c7f2..e9c7ac6 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
@@ -77,6 +77,24 @@
 
     /**
      * The dim overlay is generally calculated from the task progress, but occasionally (like when
+     * launching) needs to be animated independently of the task progress.  This call is only used
+     * when animating the task into Recents, when the header dim is already applied
+     */
+    public static final Property<TaskView, Float> DIM_ALPHA_WITHOUT_HEADER =
+            new FloatProperty<TaskView>("dimAlphaWithoutHeader") {
+                @Override
+                public void setValue(TaskView tv, float dimAlpha) {
+                    tv.setDimAlphaWithoutHeader(dimAlpha);
+                }
+
+                @Override
+                public Float get(TaskView tv) {
+                    return tv.getDimAlpha();
+                }
+            };
+
+    /**
+     * The dim overlay is generally calculated from the task progress, but occasionally (like when
      * launching) needs to be animated independently of the task progress.
      */
     public static final Property<TaskView, Float> DIM_ALPHA =
@@ -388,21 +406,17 @@
      * Sets the current dim.
      */
     public void setDimAlpha(float dimAlpha) {
-        RecentsConfiguration config = Recents.getConfiguration();
-
-        int dimAlphaInt = (int) (dimAlpha * 255);
         mDimAlpha = dimAlpha;
-        if (config.useHardwareLayers) {
-            // Defer setting hardware layers if we have not yet measured, or there is no dim to draw
-            if (getMeasuredWidth() > 0 && getMeasuredHeight() > 0) {
-                mDimColorFilter.setColor(Color.argb(dimAlphaInt, 0, 0, 0));
-                mDimLayerPaint.setColorFilter(mDimColorFilter);
-                mContent.setLayerType(LAYER_TYPE_HARDWARE, mDimLayerPaint);
-            }
-        } else {
-            mThumbnailView.setDimAlpha(dimAlpha);
-            mHeaderView.setDimAlpha(dimAlpha);
-        }
+        mThumbnailView.setDimAlpha(dimAlpha);
+        mHeaderView.setDimAlpha(dimAlpha);
+    }
+
+    /**
+     * Sets the current dim without updating the header's dim.
+     */
+    public void setDimAlphaWithoutHeader(float dimAlpha) {
+        mDimAlpha = dimAlpha;
+        mThumbnailView.setDimAlpha(dimAlpha);
     }
 
     /**
@@ -413,25 +427,6 @@
     }
 
     /**
-     * Animates the dim to the given value.
-     */
-    void animateDimAlpha(float toDimAlpha, AnimationProps animation) {
-        // Animate the dim into view as well
-        if (Float.compare(toDimAlpha, getDimAlpha()) != 0) {
-            Animator anim = animation.apply(AnimationProps.DIM_ALPHA, ObjectAnimator.ofFloat(this,
-                    DIM_ALPHA, getDimAlpha(), toDimAlpha));
-            if (animation.getListener() != null) {
-                anim.addListener(animation.getListener());
-            }
-            anim.start();
-        } else {
-            if (animation.getListener() != null) {
-                animation.getListener().onAnimationEnd(null);
-            }
-        }
-    }
-
-    /**
      * Explicitly sets the focused state of this task.
      */
     public void setFocusedState(boolean isFocused, boolean requestViewFocus) {
@@ -517,18 +512,20 @@
     @Override
     public void onPrepareLaunchTargetForEnterAnimation() {
         // These values will be animated in when onStartLaunchTargetEnterAnimation() is called
-        setDimAlpha(0);
+        setDimAlphaWithoutHeader(0);
         mActionButtonView.setAlpha(0f);
     }
 
     @Override
-    public void onStartLaunchTargetEnterAnimation(int duration, boolean screenPinningEnabled,
-            ReferenceCountedTrigger postAnimationTrigger) {
-        // Un-dim the view before/while launching the target
-        AnimationProps animation = new AnimationProps(duration, Interpolators.ALPHA_OUT)
-                .setListener(postAnimationTrigger.decrementOnAnimationEnd());
+    public void onStartLaunchTargetEnterAnimation(TaskViewTransform transform, int duration,
+            boolean screenPinningEnabled, ReferenceCountedTrigger postAnimationTrigger) {
+        // Dim the view after the app window transitions down into recents
         postAnimationTrigger.increment();
-        animateDimAlpha(0, animation);
+        AnimationProps animation = new AnimationProps(duration, Interpolators.ALPHA_OUT);
+        Animator anim = animation.apply(AnimationProps.DIM_ALPHA, ObjectAnimator.ofFloat(this,
+                DIM_ALPHA_WITHOUT_HEADER, getDimAlpha(), transform.dimAlpha));
+        anim.addListener(postAnimationTrigger.decrementOnAnimationEnd());
+        anim.start();
 
         if (screenPinningEnabled) {
             showActionButton(true /* fadeIn */, duration /* fadeInDuration */);
@@ -540,7 +537,9 @@
             ReferenceCountedTrigger postAnimationTrigger) {
         // Un-dim the view before/while launching the target
         AnimationProps animation = new AnimationProps(duration, Interpolators.ALPHA_OUT);
-        animateDimAlpha(0, animation);
+        Animator anim = animation.apply(AnimationProps.DIM_ALPHA, ObjectAnimator.ofFloat(this,
+                DIM_ALPHA, getDimAlpha(), 0));
+        anim.start();
 
         postAnimationTrigger.increment();
         hideActionButton(true /* fadeOut */, duration,
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java
index 05a8527..b2a7d90 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java
@@ -347,9 +347,11 @@
      * Sets the dim alpha, only used when we are not using hardware layers.
      * (see RecentsConfiguration.useHardwareLayers)
      */
-    void setDimAlpha(float dimAlpha) {
-        mDimAlpha = dimAlpha;
-        updateBackgroundColor(mBackground.getColor(), dimAlpha);
+    public void setDimAlpha(float dimAlpha) {
+        if (Float.compare(mDimAlpha, dimAlpha) != 0) {
+            mDimAlpha = dimAlpha;
+            updateBackgroundColor(mBackground.getColor(), dimAlpha);
+        }
     }
 
     /**
@@ -377,7 +379,9 @@
         int primaryColor = disabledInSafeMode
                 ? mDisabledTaskBarBackgroundColor
                 : t.colorPrimary;
-        updateBackgroundColor(primaryColor, mDimAlpha);
+        if (mBackground.getColor() != primaryColor) {
+            updateBackgroundColor(primaryColor, mDimAlpha);
+        }
         if (t.icon != null) {
             mIconView.setImageDrawable(t.icon);
         }
diff --git a/services/core/java/com/android/server/am/ActiveServices.java b/services/core/java/com/android/server/am/ActiveServices.java
index 8c0ec78..63a0e87 100755
--- a/services/core/java/com/android/server/am/ActiveServices.java
+++ b/services/core/java/com/android/server/am/ActiveServices.java
@@ -319,7 +319,7 @@
                         + " (pid=" + Binder.getCallingPid()
                         + ") when starting service " + service);
             }
-            callerFg = callerApp.setSchedGroup != Process.THREAD_GROUP_BG_NONINTERACTIVE;
+            callerFg = callerApp.setSchedGroup != ProcessList.SCHED_GROUP_BACKGROUND;
         } else {
             callerFg = true;
         }
@@ -831,7 +831,7 @@
                     "BIND_TREAT_LIKE_ACTIVITY");
         }
 
-        final boolean callerFg = callerApp.setSchedGroup != Process.THREAD_GROUP_BG_NONINTERACTIVE;
+        final boolean callerFg = callerApp.setSchedGroup != ProcessList.SCHED_GROUP_BACKGROUND;
         final boolean isBindExternal = (flags & Context.BIND_EXTERNAL_SERVICE) != 0;
 
         ServiceLookupResult res =
@@ -1138,7 +1138,7 @@
                         for (int i=b.apps.size()-1; i>=0; i--) {
                             ProcessRecord client = b.apps.valueAt(i).client;
                             if (client != null && client.setSchedGroup
-                                    != Process.THREAD_GROUP_BG_NONINTERACTIVE) {
+                                    != ProcessList.SCHED_GROUP_BACKGROUND) {
                                 inFg = true;
                                 break;
                             }
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index b6b4606..dee3d02 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -6229,7 +6229,7 @@
 
         app.makeActive(thread, mProcessStats);
         app.curAdj = app.setAdj = ProcessList.INVALID_ADJ;
-        app.curSchedGroup = app.setSchedGroup = Process.THREAD_GROUP_DEFAULT;
+        app.curSchedGroup = app.setSchedGroup = ProcessList.SCHED_GROUP_DEFAULT;
         app.forcingToForeground = null;
         updateProcessForegroundLocked(app, false, false);
         app.hasShownUi = false;
@@ -9220,7 +9220,7 @@
         // Kill the running processes.
         for (int i = 0; i < procsToKill.size(); i++) {
             ProcessRecord pr = procsToKill.get(i);
-            if (pr.setSchedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE
+            if (pr.setSchedGroup == ProcessList.SCHED_GROUP_BACKGROUND
                     && pr.curReceiver == null) {
                 pr.kill("remove task", true);
             } else {
@@ -10495,7 +10495,7 @@
                 cpi.packageName, r.userId)) {
 
             final boolean callerForeground = r != null ? r.setSchedGroup
-                    != Process.THREAD_GROUP_BG_NONINTERACTIVE : true;
+                    != ProcessList.SCHED_GROUP_BACKGROUND : true;
 
             // Show a permission review UI only for starting from a foreground app
             if (!callerForeground) {
@@ -14812,13 +14812,13 @@
             String oomAdj = ProcessList.makeOomAdjString(r.setAdj);
             char schedGroup;
             switch (r.setSchedGroup) {
-                case Process.THREAD_GROUP_BG_NONINTERACTIVE:
+                case ProcessList.SCHED_GROUP_BACKGROUND:
                     schedGroup = 'B';
                     break;
-                case Process.THREAD_GROUP_DEFAULT:
+                case ProcessList.SCHED_GROUP_DEFAULT:
                     schedGroup = 'F';
                     break;
-                case Process.THREAD_GROUP_TOP_APP:
+                case ProcessList.SCHED_GROUP_TOP_APP:
                     schedGroup = 'T';
                     break;
                 default:
@@ -17226,10 +17226,11 @@
                             String ssp;
                             if (data != null && (ssp=data.getSchemeSpecificPart()) != null) {
                                 boolean removed = Intent.ACTION_PACKAGE_REMOVED.equals(action);
-                                boolean fullUninstall = removed &&
-                                        !intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+                                final boolean replacing =
+                                        intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
                                 final boolean killProcess =
                                         !intent.getBooleanExtra(Intent.EXTRA_DONT_KILL_APP, false);
+                                final boolean fullUninstall = removed && !replacing;
                                 if (killProcess) {
                                     forceStopPackageLocked(ssp, UserHandle.getAppId(
                                             intent.getIntExtra(Intent.EXTRA_UID, -1)),
@@ -17237,7 +17238,10 @@
                                             removed ? "pkg removed" : "pkg changed");
                                 }
                                 if (removed) {
-                                    sendPackageBroadcastLocked(IApplicationThread.PACKAGE_REMOVED,
+                                    final int cmd = killProcess
+                                            ? IApplicationThread.PACKAGE_REMOVED
+                                            : IApplicationThread.PACKAGE_REMOVED_DONT_KILL;
+                                    sendPackageBroadcastLocked(cmd,
                                             new String[] {ssp}, userId);
                                     if (fullUninstall) {
                                         mAppOpsService.packageRemoved(
@@ -17272,7 +17276,23 @@
                             break;
                     }
                     break;
+                case Intent.ACTION_PACKAGE_REPLACED:
+                {
+                    final Uri data = intent.getData();
+                    final String ssp;
+                    if (data != null && (ssp = data.getSchemeSpecificPart()) != null) {
+                        final ApplicationInfo aInfo =
+                                getPackageManagerInternalLocked().getApplicationInfo(
+                                        ssp,
+                                        userId);
+                        mStackSupervisor.updateActivityApplicationInfoLocked(aInfo);
+                        sendPackageBroadcastLocked(IApplicationThread.PACKAGE_REPLACED,
+                                new String[] {ssp}, userId);
+                    }
+                    break;
+                }
                 case Intent.ACTION_PACKAGE_ADDED:
+                {
                     // Special case for adding a package: by default turn on compatibility mode.
                     Uri data = intent.getData();
                     String ssp;
@@ -17290,6 +17310,7 @@
                         }
                     }
                     break;
+                }
                 case Intent.ACTION_TIMEZONE_CHANGED:
                     // If this is the time zone changed action, queue up a message that will reset
                     // the timezone of all currently running processes. This message will get
@@ -18353,7 +18374,7 @@
 
         if (app.thread == null) {
             app.adjSeq = mAdjSeq;
-            app.curSchedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+            app.curSchedGroup = ProcessList.SCHED_GROUP_BACKGROUND;
             app.curProcState = ActivityManager.PROCESS_STATE_CACHED_EMPTY;
             return (app.curAdj=app.curRawAdj=ProcessList.CACHED_APP_MAX_ADJ);
         }
@@ -18373,7 +18394,7 @@
             app.adjSeq = mAdjSeq;
             app.curRawAdj = app.maxAdj;
             app.foregroundActivities = false;
-            app.curSchedGroup = Process.THREAD_GROUP_DEFAULT;
+            app.curSchedGroup = ProcessList.SCHED_GROUP_DEFAULT;
             app.curProcState = ActivityManager.PROCESS_STATE_PERSISTENT;
             // System processes can do UI, and when they do we want to have
             // them trim their memory after the user leaves the UI.  To
@@ -18410,14 +18431,14 @@
         if (app == TOP_APP) {
             // The last app on the list is the foreground app.
             adj = ProcessList.FOREGROUND_APP_ADJ;
-            schedGroup = Process.THREAD_GROUP_TOP_APP;
+            schedGroup = ProcessList.SCHED_GROUP_TOP_APP;
             app.adjType = "top-activity";
             foregroundActivities = true;
             procState = PROCESS_STATE_CUR_TOP;
         } else if (app.instrumentationClass != null) {
             // Don't want to kill running instrumentation.
             adj = ProcessList.FOREGROUND_APP_ADJ;
-            schedGroup = Process.THREAD_GROUP_DEFAULT;
+            schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
             app.adjType = "instrumentation";
             procState = ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE;
         } else if ((queue = isReceivingBroadcast(app)) != null) {
@@ -18427,7 +18448,7 @@
             // broadcast as reflected by which queue it's active in.
             adj = ProcessList.FOREGROUND_APP_ADJ;
             schedGroup = (queue == mFgBroadcastQueue)
-                    ? Process.THREAD_GROUP_DEFAULT : Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                    ? ProcessList.SCHED_GROUP_DEFAULT : ProcessList.SCHED_GROUP_BACKGROUND;
             app.adjType = "broadcast";
             procState = ActivityManager.PROCESS_STATE_RECEIVER;
         } else if (app.executingServices.size() > 0) {
@@ -18435,13 +18456,13 @@
             // counts as being in the foreground.
             adj = ProcessList.FOREGROUND_APP_ADJ;
             schedGroup = app.execServicesFg ?
-                    Process.THREAD_GROUP_DEFAULT : Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                    ProcessList.SCHED_GROUP_DEFAULT : ProcessList.SCHED_GROUP_BACKGROUND;
             app.adjType = "exec-service";
             procState = ActivityManager.PROCESS_STATE_SERVICE;
             //Slog.i(TAG, "EXEC " + (app.execServicesFg ? "FG" : "BG") + ": " + app);
         } else {
             // As far as we know the process is empty.  We may change our mind later.
-            schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+            schedGroup = ProcessList.SCHED_GROUP_BACKGROUND;
             // At this point we don't actually know the adjustment.  Use the cached adj
             // value that the caller wants us to.
             adj = cachedAdj;
@@ -18470,7 +18491,7 @@
                     if (procState > PROCESS_STATE_CUR_TOP) {
                         procState = PROCESS_STATE_CUR_TOP;
                     }
-                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                    schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
                     app.cached = false;
                     app.empty = false;
                     foregroundActivities = true;
@@ -18489,7 +18510,7 @@
                     if (procState > PROCESS_STATE_CUR_TOP) {
                         procState = PROCESS_STATE_CUR_TOP;
                     }
-                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                    schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
                     app.cached = false;
                     app.empty = false;
                     foregroundActivities = true;
@@ -18533,7 +18554,7 @@
                 procState = ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE;
                 app.cached = false;
                 app.adjType = "fg-service";
-                schedGroup = Process.THREAD_GROUP_DEFAULT;
+                schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
             } else if (app.forcingToForeground != null) {
                 // The user is aware of this app, so make it visible.
                 adj = ProcessList.PERCEPTIBLE_APP_ADJ;
@@ -18541,7 +18562,7 @@
                 app.cached = false;
                 app.adjType = "force-fg";
                 app.adjSource = app.forcingToForeground;
-                schedGroup = Process.THREAD_GROUP_DEFAULT;
+                schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
             }
         }
 
@@ -18549,7 +18570,7 @@
             if (adj > ProcessList.HEAVY_WEIGHT_APP_ADJ) {
                 // We don't want to kill the current heavy-weight process.
                 adj = ProcessList.HEAVY_WEIGHT_APP_ADJ;
-                schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                schedGroup = ProcessList.SCHED_GROUP_BACKGROUND;
                 app.cached = false;
                 app.adjType = "heavy";
             }
@@ -18563,7 +18584,7 @@
                 // This process is hosting what we currently consider to be the
                 // home app, so we don't want to let it go into the background.
                 adj = ProcessList.HOME_APP_ADJ;
-                schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                schedGroup = ProcessList.SCHED_GROUP_BACKGROUND;
                 app.cached = false;
                 app.adjType = "home";
             }
@@ -18578,7 +18599,7 @@
                 // We want to try to keep it around more aggressively, to give
                 // a good experience around switching between two apps.
                 adj = ProcessList.PREVIOUS_APP_ADJ;
-                schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                schedGroup = ProcessList.SCHED_GROUP_BACKGROUND;
                 app.cached = false;
                 app.adjType = "previous";
             }
@@ -18618,7 +18639,7 @@
 
         for (int is = app.services.size()-1;
                 is >= 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
-                        || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE
+                        || schedGroup == ProcessList.SCHED_GROUP_BACKGROUND
                         || procState > ActivityManager.PROCESS_STATE_TOP);
                 is--) {
             ServiceRecord s = app.services.valueAt(is);
@@ -18656,13 +18677,13 @@
             }
             for (int conni = s.connections.size()-1;
                     conni >= 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
-                            || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE
+                            || schedGroup == ProcessList.SCHED_GROUP_BACKGROUND
                             || procState > ActivityManager.PROCESS_STATE_TOP);
                     conni--) {
                 ArrayList<ConnectionRecord> clist = s.connections.valueAt(conni);
                 for (int i = 0;
                         i < clist.size() && (adj > ProcessList.FOREGROUND_APP_ADJ
-                                || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE
+                                || schedGroup == ProcessList.SCHED_GROUP_BACKGROUND
                                 || procState > ActivityManager.PROCESS_STATE_TOP);
                         i++) {
                     // XXX should compute this based on the max of
@@ -18733,7 +18754,6 @@
                                         && clientAdj < ProcessList.PERCEPTIBLE_APP_ADJ
                                         && adj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                                     adj = ProcessList.PERCEPTIBLE_APP_ADJ;
-                                    schedGroup = Process.THREAD_GROUP_DEFAULT;
                                 } else if (clientAdj >= ProcessList.PERCEPTIBLE_APP_ADJ) {
                                     adj = clientAdj;
                                 } else {
@@ -18755,7 +18775,7 @@
                                 if ((cr.flags&Context.BIND_IMPORTANT) != 0) {
                                     schedGroup = client.curSchedGroup;
                                 } else {
-                                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                                    schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
                                 }
                             }
                             if (clientProcState <= ActivityManager.PROCESS_STATE_TOP) {
@@ -18825,9 +18845,9 @@
                             adj = ProcessList.FOREGROUND_APP_ADJ;
                             if ((cr.flags&Context.BIND_NOT_FOREGROUND) == 0) {
                                 if ((cr.flags&Context.BIND_IMPORTANT) != 0) {
-                                    schedGroup = Process.THREAD_GROUP_TOP_APP;
+                                    schedGroup = ProcessList.SCHED_GROUP_TOP_APP;
                                 } else {
-                                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                                    schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
                                 }
                             }
                             app.cached = false;
@@ -18845,13 +18865,13 @@
 
         for (int provi = app.pubProviders.size()-1;
                 provi >= 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
-                        || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE
+                        || schedGroup == ProcessList.SCHED_GROUP_BACKGROUND
                         || procState > ActivityManager.PROCESS_STATE_TOP);
                 provi--) {
             ContentProviderRecord cpr = app.pubProviders.valueAt(provi);
             for (int i = cpr.connections.size()-1;
                     i >= 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
-                            || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE
+                            || schedGroup == ProcessList.SCHED_GROUP_BACKGROUND
                             || procState > ActivityManager.PROCESS_STATE_TOP);
                     i--) {
                 ContentProviderConnection conn = cpr.connections.get(i);
@@ -18909,7 +18929,7 @@
                     procState = clientProcState;
                 }
                 if (client.curSchedGroup > schedGroup) {
-                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                    schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
                 }
             }
             // If the provider has external (non-framework) process
@@ -18918,7 +18938,7 @@
             if (cpr.hasExternalProcessHandles()) {
                 if (adj > ProcessList.FOREGROUND_APP_ADJ) {
                     adj = ProcessList.FOREGROUND_APP_ADJ;
-                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                    schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
                     app.cached = false;
                     app.adjType = "provider";
                     app.adjTarget = cpr.name;
@@ -18932,7 +18952,7 @@
         if (app.lastProviderTime > 0 && (app.lastProviderTime+CONTENT_PROVIDER_RETAIN_TIME) > now) {
             if (adj > ProcessList.PREVIOUS_APP_ADJ) {
                 adj = ProcessList.PREVIOUS_APP_ADJ;
-                schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                schedGroup = ProcessList.SCHED_GROUP_BACKGROUND;
                 app.cached = false;
                 app.adjType = "provider";
             }
@@ -19011,7 +19031,7 @@
         if (adj > app.maxAdj) {
             adj = app.maxAdj;
             if (app.maxAdj <= ProcessList.PERCEPTIBLE_APP_ADJ) {
-                schedGroup = Process.THREAD_GROUP_DEFAULT;
+                schedGroup = ProcessList.SCHED_GROUP_DEFAULT;
             }
         }
 
@@ -19427,17 +19447,29 @@
         if (app.setSchedGroup != app.curSchedGroup) {
             app.setSchedGroup = app.curSchedGroup;
             if (DEBUG_SWITCH || DEBUG_OOM_ADJ) Slog.v(TAG_OOM_ADJ,
-                    "Setting process group of " + app.processName
+                    "Setting sched group of " + app.processName
                     + " to " + app.curSchedGroup);
             if (app.waitingToKill != null && app.curReceiver == null
-                    && app.setSchedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE) {
+                    && app.setSchedGroup == ProcessList.SCHED_GROUP_BACKGROUND) {
                 app.kill(app.waitingToKill, true);
                 success = false;
             } else {
+                int processGroup;
+                switch (app.curSchedGroup) {
+                    case ProcessList.SCHED_GROUP_BACKGROUND:
+                        processGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
+                        break;
+                    case ProcessList.SCHED_GROUP_TOP_APP:
+                        processGroup = Process.THREAD_GROUP_TOP_APP;
+                        break;
+                    default:
+                        processGroup = Process.THREAD_GROUP_DEFAULT;
+                        break;
+                }
                 if (true) {
                     long oldId = Binder.clearCallingIdentity();
                     try {
-                        Process.setProcessGroup(app.pid, app.curSchedGroup);
+                        Process.setProcessGroup(app.pid, processGroup);
                     } catch (Exception e) {
                         Slog.w(TAG, "Failed setting process group of " + app.pid
                                 + " to " + app.curSchedGroup);
@@ -19448,7 +19480,7 @@
                 } else {
                     if (app.thread != null) {
                         try {
-                            app.thread.setSchedulingGroup(app.curSchedGroup);
+                            app.thread.setSchedulingGroup(processGroup);
                         } catch (RemoteException e) {
                         }
                     }
diff --git a/services/core/java/com/android/server/am/ActivityRecord.java b/services/core/java/com/android/server/am/ActivityRecord.java
index d5e40cf..e430dad 100755
--- a/services/core/java/com/android/server/am/ActivityRecord.java
+++ b/services/core/java/com/android/server/am/ActivityRecord.java
@@ -76,6 +76,7 @@
 import java.io.PrintWriter;
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Objects;
 
@@ -252,6 +253,10 @@
                 pw.print(prefix); pw.print("resDir="); pw.println(appInfo.publicSourceDir);
             }
             pw.print(prefix); pw.print("dataDir="); pw.println(appInfo.dataDir);
+            if (appInfo.splitSourceDirs != null) {
+                pw.print(prefix); pw.print("splitDir=");
+                        pw.println(Arrays.toString(appInfo.splitSourceDirs));
+            }
         }
         pw.print(prefix); pw.print("stateNotNeeded="); pw.print(stateNotNeeded);
                 pw.print(" componentSpecified="); pw.print(componentSpecified);
diff --git a/services/core/java/com/android/server/am/ActivityStack.java b/services/core/java/com/android/server/am/ActivityStack.java
index 769bee4..74c8363 100644
--- a/services/core/java/com/android/server/am/ActivityStack.java
+++ b/services/core/java/com/android/server/am/ActivityStack.java
@@ -65,6 +65,8 @@
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.net.Uri;
@@ -184,7 +186,7 @@
      * The back history of all previous (and possibly still
      * running) activities.  It contains #TaskRecord objects.
      */
-    private ArrayList<TaskRecord> mTaskHistory = new ArrayList<>();
+    private final ArrayList<TaskRecord> mTaskHistory = new ArrayList<>();
 
     /**
      * Used for validating app tokens with window manager.
@@ -839,6 +841,18 @@
         }
     }
 
+    void updateActivityApplicationInfoLocked(ApplicationInfo aInfo) {
+        final String packageName = aInfo.packageName;
+        for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
+            final List<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;
+            for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
+                if (packageName.equals(activities.get(activityNdx).packageName)) {
+                    activities.get(activityNdx).info.applicationInfo = aInfo;
+                }
+            }
+        }
+    }
+
     /**
      * @return true if something must be done before going to sleep.
      */
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index f4f3c81..48f31f9 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -1700,6 +1700,15 @@
         return false;
     }
 
+    void updateActivityApplicationInfoLocked(ApplicationInfo aInfo) {
+        for (int displayNdx = mActivityDisplays.size() - 1; displayNdx >= 0; --displayNdx) {
+            final ArrayList<ActivityStack> stacks = mActivityDisplays.valueAt(displayNdx).mStacks;
+            for (int stackNdx = stacks.size() - 1; stackNdx >= 0; --stackNdx) {
+                stacks.get(stackNdx).updateActivityApplicationInfoLocked(aInfo);
+            }
+        }
+    }
+
     TaskRecord finishTopRunningActivityLocked(ProcessRecord app, String reason) {
         TaskRecord finishedTask = null;
         ActivityStack focusedStack = getFocusedStack();
diff --git a/services/core/java/com/android/server/am/BroadcastQueue.java b/services/core/java/com/android/server/am/BroadcastQueue.java
index 37b0af1..45e3a76 100644
--- a/services/core/java/com/android/server/am/BroadcastQueue.java
+++ b/services/core/java/com/android/server/am/BroadcastQueue.java
@@ -654,7 +654,7 @@
         }
 
         final boolean callerForeground = receiverRecord.callerApp != null
-                ? receiverRecord.callerApp.setSchedGroup != Process.THREAD_GROUP_BG_NONINTERACTIVE
+                ? receiverRecord.callerApp.setSchedGroup != ProcessList.SCHED_GROUP_BACKGROUND
                 : true;
 
         // Show a permission review UI only for explicit broadcast from a foreground app
diff --git a/services/core/java/com/android/server/am/ProcessList.java b/services/core/java/com/android/server/am/ProcessList.java
index b49370b..f073e5c 100644
--- a/services/core/java/com/android/server/am/ProcessList.java
+++ b/services/core/java/com/android/server/am/ProcessList.java
@@ -124,6 +124,13 @@
     // Memory pages are 4K.
     static final int PAGE_SIZE = 4*1024;
 
+    // Activity manager's version of Process.THREAD_GROUP_BG_NONINTERACTIVE
+    static final int SCHED_GROUP_BACKGROUND = 0;
+    // Activity manager's version of Process.THREAD_GROUP_DEFAULT
+    static final int SCHED_GROUP_DEFAULT = 1;
+    // Activity manager's version of Process.THREAD_GROUP_TOP_APP
+    static final int SCHED_GROUP_TOP_APP = 2;
+
     // The minimum number of cached apps we want to be able to keep around,
     // without empty apps being able to push them out of memory.
     static final int MIN_CACHED_APPS = 2;
diff --git a/services/core/java/com/android/server/notification/NotificationIntrusivenessExtractor.java b/services/core/java/com/android/server/notification/NotificationIntrusivenessExtractor.java
index b57cc75..bcdeb66 100644
--- a/services/core/java/com/android/server/notification/NotificationIntrusivenessExtractor.java
+++ b/services/core/java/com/android/server/notification/NotificationIntrusivenessExtractor.java
@@ -23,7 +23,7 @@
 import android.util.Slog;
 
 /**
- * This {@link com.android.server.notification.NotificationSignalExtractor} noticies noisy
+ * This {@link com.android.server.notification.NotificationSignalExtractor} notices noisy
  * notifications and marks them to get a temporary ranking bump.
  */
 public class NotificationIntrusivenessExtractor implements NotificationSignalExtractor {
@@ -44,9 +44,15 @@
             return null;
         }
 
-        final Notification notification = record.getNotification();
-        if (record.getImportance() > NotificationListenerService.Ranking.IMPORTANCE_DEFAULT) {
-            record.setRecentlyIntrusive(true);
+        if (record.getImportance() >= NotificationListenerService.Ranking.IMPORTANCE_DEFAULT) {
+            final Notification notification = record.getNotification();
+            if ((notification.defaults & Notification.DEFAULT_VIBRATE) != 0 ||
+                    notification.vibrate != null ||
+                    (notification.defaults & Notification.DEFAULT_SOUND) != 0 ||
+                    notification.sound != null ||
+                    notification.fullScreenIntent != null) {
+                record.setRecentlyIntrusive(true);
+            }
         }
 
         return new RankingReconsideration(record.getKey(), HANG_TIME_MS) {
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 86f2f97..31311f7 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -360,6 +360,7 @@
     static final int SCAN_MOVE = 1<<13;
     static final int SCAN_INITIAL = 1<<14;
     static final int SCAN_CHECK_ONLY = 1<<15;
+    static final int SCAN_DONT_KILL_APP = 1<<17;
 
     static final int REMOVE_CHATTY = 1<<16;
 
@@ -499,6 +500,9 @@
     final ArrayMap<String, PackageParser.Package> mPackages =
             new ArrayMap<String, PackageParser.Package>();
 
+    final ArrayMap<String, Set<String>> mKnownCodebase =
+            new ArrayMap<String, Set<String>>();
+
     // Tracks available target package names -> overlay package paths.
     final ArrayMap<String, ArrayMap<String, PackageParser.Package>> mOverlays =
         new ArrayMap<String, ArrayMap<String, PackageParser.Package>>();
@@ -1425,19 +1429,21 @@
 
                         final boolean grantPermissions = (args.installFlags
                                 & PackageManager.INSTALL_GRANT_RUNTIME_PERMISSIONS) != 0;
+                        final boolean killApp = (args.installFlags
+                                & PackageManager.INSTALL_DONT_KILL_APP) == 0;
                         final String[] grantedPermissions = args.installGrantPermissions;
 
                         // Handle the parent package
-                        handlePackagePostInstall(parentRes, grantPermissions, grantedPermissions,
-                                args.observer);
+                        handlePackagePostInstall(parentRes, grantPermissions, killApp,
+                                grantedPermissions, args.observer);
 
                         // Handle the child packages
                         final int childCount = (parentRes.addedChildPackages != null)
                                 ? parentRes.addedChildPackages.size() : 0;
                         for (int i = 0; i < childCount; i++) {
                             PackageInstalledInfo childRes = parentRes.addedChildPackages.valueAt(i);
-                            handlePackagePostInstall(childRes, grantPermissions, grantedPermissions,
-                                    args.observer);
+                            handlePackagePostInstall(childRes, grantPermissions, killApp,
+                                    grantedPermissions, args.observer);
                         }
 
                         // Log tracing if needed
@@ -1632,11 +1638,12 @@
     }
 
     private void handlePackagePostInstall(PackageInstalledInfo res, boolean grantPermissions,
-            String[] grantedPermissions, IPackageInstallObserver2 installObserver) {
+            boolean killApp, String[] grantedPermissions,
+            IPackageInstallObserver2 installObserver) {
         if (res.returnCode == PackageManager.INSTALL_SUCCEEDED) {
             // Send the removed broadcasts
             if (res.removedInfo != null) {
-                res.removedInfo.sendPackageRemovedBroadcasts();
+                res.removedInfo.sendPackageRemovedBroadcasts(killApp);
             }
 
             // Now that we successfully installed the package, grant runtime
@@ -7899,13 +7906,17 @@
         // Request the ActivityManager to kill the process(only for existing packages)
         // so that we do not end up in a confused state while the user is still using the older
         // version of the application while the new one gets installed.
-        if ((scanFlags & SCAN_REPLACING) != 0) {
-            Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "killApplication");
+        final boolean isReplacing = (scanFlags & SCAN_REPLACING) != 0;
+        final boolean killApp = (scanFlags & SCAN_DONT_KILL_APP) == 0;
+        if (killApp) {
+            if (isReplacing) {
+                Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "killApplication");
 
-            killApplication(pkg.applicationInfo.packageName,
-                        pkg.applicationInfo.uid, "replace pkg");
+                killApplication(pkg.applicationInfo.packageName,
+                            pkg.applicationInfo.uid, "replace pkg");
 
-            Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
+                Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
+            }
         }
 
         // Also need to kill any apps that are dependent on the library.
@@ -10594,7 +10605,7 @@
         info.removedPackage = packageName;
         info.removedUsers = new int[] {userId};
         info.uid = UserHandle.getUid(userId, pkgSetting.appId);
-        info.sendPackageRemovedBroadcasts();
+        info.sendPackageRemovedBroadcasts(true /*killApp*/);
     }
 
     private void sendPackagesSuspendedForUser(String[] pkgList, int userId, boolean suspended) {
@@ -13077,6 +13088,15 @@
         }
     }
 
+    public List<String> getPreviousCodePaths(String packageName) {
+        final PackageSetting ps = mSettings.mPackages.get(packageName);
+        final List<String> result = new ArrayList<String>();
+        if (ps != null && ps.oldCodePaths != null) {
+            result.addAll(ps.oldCodePaths);
+        }
+        return result;
+    }
+
     private void replaceNonSystemPackageLI(PackageParser.Package deletedPackage,
             PackageParser.Package pkg, int parseFlags, int scanFlags, UserHandle user,
             int[] allUsers, String installerPackageName, PackageInstalledInfo res) {
@@ -13086,12 +13106,16 @@
         String pkgName = deletedPackage.packageName;
         boolean deletedPkg = true;
         boolean addedPkg = false;
+        boolean updatedSettings = false;
+        final boolean killApp = (scanFlags & SCAN_DONT_KILL_APP) == 0;
+        final int deleteFlags = PackageManager.DELETE_KEEP_DATA
+                | (killApp ? 0 : PackageManager.DELETE_DONT_KILL_APP);
 
         final long origUpdateTime = (pkg.mExtras != null)
                 ? ((PackageSetting)pkg.mExtras).lastUpdateTime : 0;
 
         // First delete the existing package while retaining the data directory
-        if (!deletePackageLI(pkgName, null, true, allUsers, PackageManager.DELETE_KEEP_DATA,
+        if (!deletePackageLI(pkgName, null, true, allUsers, deleteFlags,
                 res.removedInfo, true, pkg)) {
             // If the existing package wasn't successfully deleted
             res.setError(INSTALL_FAILED_REPLACE_COULDNT_DELETE, "replaceNonSystemPackageLI");
@@ -13117,6 +13141,27 @@
                 final PackageParser.Package newPackage = scanPackageTracedLI(pkg, parseFlags,
                         scanFlags | SCAN_UPDATE_TIME, System.currentTimeMillis(), user);
                 updateSettingsLI(newPackage, installerPackageName, allUsers, res, user);
+
+                // Update the in-memory copy of the previous code paths.
+                PackageSetting ps = mSettings.mPackages.get(pkgName);
+                if (!killApp) {
+                    if (ps.oldCodePaths == null) {
+                        ps.oldCodePaths = new ArraySet<>();
+                    }
+                    Collections.addAll(ps.oldCodePaths, deletedPackage.baseCodePath);
+                    if (deletedPackage.splitCodePaths != null) {
+                        Collections.addAll(ps.oldCodePaths, deletedPackage.splitCodePaths);
+                    }
+                } else {
+                    ps.oldCodePaths = null;
+                }
+                if (ps.childPackageNames != null) {
+                    for (int i = ps.childPackageNames.size() - 1; i >= 0; --i) {
+                        final String childPkgName = ps.childPackageNames.get(i);
+                        final PackageSetting childPs = mSettings.mPackages.get(childPkgName);
+                        childPs.oldCodePaths = ps.oldCodePaths;
+                    }
+                }
                 prepareAppDataAfterInstall(newPackage);
                 addedPkg = true;
             } catch (PackageManagerException e) {
@@ -13129,7 +13174,7 @@
 
             // Revert all internal state mutations and added folders for the failed install
             if (addedPkg) {
-                deletePackageLI(pkgName, null, true, allUsers, PackageManager.DELETE_KEEP_DATA,
+                deletePackageLI(pkgName, null, true, allUsers, deleteFlags,
                         res.removedInfo, true, null);
             }
 
@@ -13582,6 +13627,9 @@
             // moving a complete application; perform an initial scan on the new install location
             scanFlags |= SCAN_INITIAL;
         }
+        if ((installFlags & PackageManager.INSTALL_DONT_KILL_APP) != 0) {
+            scanFlags |= SCAN_DONT_KILL_APP;
+        }
 
         // Result object to be returned
         res.setReturnCode(PackageManager.INSTALL_SUCCEEDED);
@@ -14302,7 +14350,8 @@
         }
 
         if (res) {
-            info.sendPackageRemovedBroadcasts();
+            final boolean killApp = (flags & PackageManager.INSTALL_DONT_KILL_APP) == 0;
+            info.sendPackageRemovedBroadcasts(killApp);
             info.sendSystemPackageUpdatedBroadcasts();
             info.sendSystemPackageAppearedBroadcasts();
         }
@@ -14334,12 +14383,12 @@
         ArrayMap<String, PackageRemovedInfo> removedChildPackages;
         ArrayMap<String, PackageInstalledInfo> appearedChildPackages;
 
-        void sendPackageRemovedBroadcasts() {
-            sendPackageRemovedBroadcastInternal();
+        void sendPackageRemovedBroadcasts(boolean killApp) {
+            sendPackageRemovedBroadcastInternal(killApp);
             final int childCount = removedChildPackages != null ? removedChildPackages.size() : 0;
             for (int i = 0; i < childCount; i++) {
                 PackageRemovedInfo childInfo = removedChildPackages.valueAt(i);
-                childInfo.sendPackageRemovedBroadcastInternal();
+                childInfo.sendPackageRemovedBroadcastInternal(killApp);
             }
         }
 
@@ -14381,10 +14430,11 @@
                     null, 0, removedPackage, null, null);
         }
 
-        private void sendPackageRemovedBroadcastInternal() {
+        private void sendPackageRemovedBroadcastInternal(boolean killApp) {
             Bundle extras = new Bundle(2);
             extras.putInt(Intent.EXTRA_UID, removedAppId >= 0  ? removedAppId : uid);
             extras.putBoolean(Intent.EXTRA_DATA_REMOVED, dataRemoved);
+            extras.putBoolean(Intent.EXTRA_DONT_KILL_APP, !killApp);
             if (isUpdate || isRemovedPackageSystemUpdate) {
                 extras.putBoolean(Intent.EXTRA_REPLACING, true);
             }
@@ -14875,7 +14925,10 @@
         } else {
             if (DEBUG_REMOVE) Slog.d(TAG, "Removing non-system package: " + ps.name);
             // Kill application pre-emptively especially for apps on sd.
-            killApplication(packageName, ps.appId, "uninstall pkg");
+            final boolean killApp = (flags & PackageManager.DELETE_DONT_KILL_APP) == 0;
+            if (killApp) {
+                killApplication(packageName, ps.appId, "uninstall pkg");
+            }
             ret = deleteInstalledPackageLI(ps, deleteCodeAndResources, flags, allUserHandles,
                     outInfo, writeSettings, replacingPackage);
         }
@@ -19124,6 +19177,11 @@
                 return permissionsState.isPermissionReviewRequired(userId);
             }
         }
+
+        @Override
+        public ApplicationInfo getApplicationInfo(String packageName, int userId) {
+            return PackageManagerService.this.getApplicationInfo(packageName, 0 /*flags*/, userId);
+        }
     }
 
     @Override
diff --git a/services/core/java/com/android/server/pm/PackageSettingBase.java b/services/core/java/com/android/server/pm/PackageSettingBase.java
index e5eec7e..1434718 100644
--- a/services/core/java/com/android/server/pm/PackageSettingBase.java
+++ b/services/core/java/com/android/server/pm/PackageSettingBase.java
@@ -30,6 +30,7 @@
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 
 /**
  * Settings base class for pending and resolved classes.
@@ -118,7 +119,14 @@
      * platform will refuse to launch packages in a frozen state.
      */
     boolean frozen = false;
-
+    /**
+     * Non-persisted value. During an "upgrade without restart", we need the set
+     * of all previous code paths so we can surgically add the new APKs to the
+     * active classloader. If at any point an application is upgraded with a
+     * restart, this field will be cleared since the classloader would be created
+     * using the full set of code paths when the package's process is started.
+     */
+    Set<String> oldCodePaths;
     PackageSettingBase origPackage;
 
     /** Package name of the app that installed this package */