Merge "Add sdk check to recyclerviewfastscroller" into sc-dev
diff --git a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
index 36322ce..26d407f 100644
--- a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
+++ b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
@@ -214,8 +214,9 @@
         }
     };
 
+    // Pairs of window starting type and starting window background color for starting tasks
     // Will never be larger than MAX_NUM_TASKS
-    private LinkedHashMap<Integer, Integer> mTypeForTaskId;
+    private LinkedHashMap<Integer, Pair<Integer, Integer>> mTaskStartParams;
 
     public QuickstepTransitionManager(Context context) {
         mLauncher = Launcher.cast(Launcher.getLauncher(context));
@@ -232,9 +233,9 @@
         mLauncher.addOnDeviceProfileChangeListener(this);
 
         if (supportsSSplashScreen()) {
-            mTypeForTaskId = new LinkedHashMap<Integer, Integer>(MAX_NUM_TASKS) {
+            mTaskStartParams = new LinkedHashMap<Integer, Pair<Integer, Integer>>(MAX_NUM_TASKS) {
                 @Override
-                protected boolean removeEldestEntry(Entry<Integer, Integer> entry) {
+                protected boolean removeEldestEntry(Entry<Integer, Pair<Integer, Integer>> entry) {
                     return size() > MAX_NUM_TASKS;
                 }
             };
@@ -420,15 +421,6 @@
         return bounds;
     }
 
-    private int getOpeningTaskId(RemoteAnimationTargetCompat[] appTargets) {
-        for (RemoteAnimationTargetCompat target : appTargets) {
-            if (target.mode == MODE_OPENING) {
-                return target.taskId;
-            }
-        }
-        return -1;
-    }
-
     public void setRemoteAnimationProvider(final RemoteAnimationProvider animationProvider,
             CancellationSignal cancellationSignal) {
         mRemoteAnimationProvider = animationProvider;
@@ -595,10 +587,12 @@
 
         final boolean hasSplashScreen;
         if (supportsSSplashScreen()) {
-            int taskId = getOpeningTaskId(appTargets);
-            int type = mTypeForTaskId.getOrDefault(taskId, STARTING_WINDOW_TYPE_NONE);
-            mTypeForTaskId.remove(taskId);
-            hasSplashScreen = type == STARTING_WINDOW_TYPE_SPLASH_SCREEN;
+            int taskId = openingTargets.getFirstAppTargetTaskId();
+            Pair<Integer, Integer> defaultParams = Pair.create(STARTING_WINDOW_TYPE_NONE, 0);
+            Pair<Integer, Integer> taskParams =
+                    mTaskStartParams.getOrDefault(taskId, defaultParams);
+            mTaskStartParams.remove(taskId);
+            hasSplashScreen = taskParams.first == STARTING_WINDOW_TYPE_SPLASH_SCREEN;
         } else {
             hasSplashScreen = false;
         }
@@ -799,18 +793,30 @@
         final RectF widgetBackgroundBounds = new RectF();
         final Rect appWindowCrop = new Rect();
         final Matrix matrix = new Matrix();
+        RemoteAnimationTargets openingTargets = new RemoteAnimationTargets(appTargets,
+                wallpaperTargets, nonAppTargets, MODE_OPENING);
+
+        RemoteAnimationTargetCompat openingTarget = openingTargets.getFirstAppTarget();
+        int fallbackBackgroundColor = 0;
+        if (openingTarget != null && supportsSSplashScreen()) {
+            fallbackBackgroundColor = mTaskStartParams.containsKey(openingTarget.taskId)
+                    ? mTaskStartParams.get(openingTarget.taskId).second : 0;
+            mTaskStartParams.remove(openingTarget.taskId);
+        }
+        if (fallbackBackgroundColor == 0) {
+            fallbackBackgroundColor =
+                    FloatingWidgetView.getDefaultBackgroundColor(mLauncher, openingTarget);
+        }
 
         final float finalWindowRadius = mDeviceProfile.isMultiWindowMode
                 ? 0 : getWindowCornerRadius(mLauncher.getResources());
         final FloatingWidgetView floatingView = FloatingWidgetView.getFloatingWidgetView(mLauncher,
                 v, widgetBackgroundBounds,
                 new Size(windowTargetBounds.width(), windowTargetBounds.height()),
-                finalWindowRadius, appTargetsAreTranslucent);
+                finalWindowRadius, appTargetsAreTranslucent, fallbackBackgroundColor);
         final float initialWindowRadius = supportsRoundedCornersOnWindows(mLauncher.getResources())
                 ? floatingView.getInitialCornerRadius() : 0;
 
-        RemoteAnimationTargets openingTargets = new RemoteAnimationTargets(appTargets,
-                wallpaperTargets, nonAppTargets, MODE_OPENING);
         SurfaceTransactionApplier surfaceApplier = new SurfaceTransactionApplier(floatingView);
         openingTargets.addReleaseCheck(surfaceApplier);
 
@@ -1434,8 +1440,8 @@
         }
 
         @Override
-        public void onTaskLaunching(int taskId, int supportedType) {
-            mTransitionManager.mTypeForTaskId.put(taskId, supportedType);
+        public void onTaskLaunching(int taskId, int supportedType, int color) {
+            mTransitionManager.mTaskStartParams.put(taskId, Pair.create(supportedType, color));
         }
     }
 }
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index 88db274..52f34d9 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -1071,7 +1071,8 @@
     }
 
     protected abstract HomeAnimationFactory createHomeAnimationFactory(
-            ArrayList<IBinder> launchCookies, long duration, boolean isTargetTranslucent);
+            ArrayList<IBinder> launchCookies, long duration, boolean isTargetTranslucent,
+            RemoteAnimationTargetCompat runningTaskTarget);
 
     private final TaskStackChangeListener mActivityRestartListener = new TaskStackChangeListener() {
         @Override
@@ -1117,7 +1118,7 @@
                     : new ArrayList<>();
             boolean isTranslucent = runningTaskTarget != null && runningTaskTarget.isTranslucent;
             HomeAnimationFactory homeAnimFactory =
-                    createHomeAnimationFactory(cookies, duration, isTranslucent);
+                    createHomeAnimationFactory(cookies, duration, isTranslucent, runningTaskTarget);
             mIsSwipingPipToHome = homeAnimFactory.supportSwipePipToHome()
                     && runningTaskTarget != null
                     && runningTaskTarget.taskInfo.pictureInPictureParams != null
diff --git a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
index 2d81429..7290ff6 100644
--- a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
+++ b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
@@ -129,7 +129,8 @@
 
     @Override
     protected HomeAnimationFactory createHomeAnimationFactory(ArrayList<IBinder> launchCookies,
-            long duration, boolean isTargetTranslucent) {
+            long duration, boolean isTargetTranslucent,
+            RemoteAnimationTargetCompat runningTaskTarget) {
         mActiveAnimationFactory = new FallbackHomeAnimationFactory(duration);
         ActivityOptions options = ActivityOptions.makeCustomAnimation(mContext, 0, 0);
         Intent intent = new Intent(mGestureState.getHomeIntent());
diff --git a/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java b/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java
index 1bae1c5..40741e4 100644
--- a/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java
+++ b/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java
@@ -20,6 +20,9 @@
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.Utilities.boundToRange;
 import static com.android.launcher3.Utilities.dpToPx;
+import static com.android.launcher3.Utilities.mapBoundToRange;
+import static com.android.launcher3.anim.Interpolators.EXAGGERATED_EASE;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.config.FeatureFlags.PROTOTYPE_APP_CLOSE;
 import static com.android.launcher3.model.data.ItemInfo.NO_MATCHING_ID;
 import static com.android.launcher3.views.FloatingIconView.SHAPE_PROGRESS_DURATION;
@@ -65,6 +68,7 @@
 import com.android.quickstep.views.TaskView;
 import com.android.systemui.plugins.ResourceProvider;
 import com.android.systemui.shared.system.InputConsumerController;
+import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
 import java.util.ArrayList;
 
@@ -84,7 +88,8 @@
 
     @Override
     protected HomeAnimationFactory createHomeAnimationFactory(ArrayList<IBinder> launchCookies,
-            long duration, boolean isTargetTranslucent) {
+            long duration, boolean isTargetTranslucent,
+            RemoteAnimationTargetCompat runningTaskTarget) {
         if (mActivity == null) {
             mStateCallback.addChangeListener(STATE_LAUNCHER_PRESENT | STATE_HANDLER_INVALIDATED,
                     isPresent -> mRecentsView.startHome());
@@ -108,7 +113,7 @@
         }
         if (workspaceView instanceof LauncherAppWidgetHostView) {
             return createWidgetHomeAnimationFactory((LauncherAppWidgetHostView) workspaceView,
-                    isTargetTranslucent);
+                    isTargetTranslucent, runningTaskTarget);
         }
         return createIconHomeAnimationFactory(workspaceView);
     }
@@ -169,15 +174,19 @@
     }
 
     private HomeAnimationFactory createWidgetHomeAnimationFactory(
-            LauncherAppWidgetHostView hostView, boolean isTargetTranslucent) {
-
+            LauncherAppWidgetHostView hostView, boolean isTargetTranslucent,
+            RemoteAnimationTargetCompat runningTaskTarget) {
+        final float floatingWidgetAlpha = isTargetTranslucent ? 0 : 1;
         RectF backgroundLocation = new RectF();
         Rect crop = new Rect();
         mTaskViewSimulator.getCurrentCropRect().roundOut(crop);
         Size windowSize = new Size(crop.width(), crop.height());
+        int fallbackBackgroundColor =
+                FloatingWidgetView.getDefaultBackgroundColor(mContext, runningTaskTarget);
         FloatingWidgetView floatingWidgetView = FloatingWidgetView.getFloatingWidgetView(mActivity,
                 hostView, backgroundLocation, windowSize,
-                mTaskViewSimulator.getCurrentCornerRadius(), isTargetTranslucent);
+                mTaskViewSimulator.getCurrentCornerRadius(), isTargetTranslucent,
+                fallbackBackgroundColor);
 
         return new FloatingViewHomeAnimationFactory(floatingWidgetView) {
 
@@ -207,12 +216,20 @@
             }
 
             @Override
-            public void update(@Nullable AppCloseConfig config, RectF currentRect,
-                    float progress, float radius) {
+            public void update(@Nullable AppCloseConfig config, RectF currentRect, float progress,
+                    float radius) {
                 super.update(config, currentRect, progress, radius);
-                floatingWidgetView.update(currentRect, 1 /* floatingWidgetAlpha */,
-                        config != null ? config.getFgAlpha() : 1f /* foregroundAlpha */,
-                        0 /* fallbackBackgroundAlpha */, 1 - progress);
+                final float fallbackBackgroundAlpha =
+                        1 - mapBoundToRange(progress, 0.8f, 1, 0, 1, EXAGGERATED_EASE);
+                final float foregroundAlpha =
+                        mapBoundToRange(progress, 0.5f, 1, 0, 1, EXAGGERATED_EASE);
+                floatingWidgetView.update(currentRect, floatingWidgetAlpha, foregroundAlpha,
+                        fallbackBackgroundAlpha, 1 - progress);
+            }
+
+            @Override
+            protected float getWindowAlpha(float progress) {
+                return 1 - mapBoundToRange(progress, 0, 0.5f, 0, 1, LINEAR);
             }
         };
     }
diff --git a/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java b/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java
index edc3ab2..c032889 100644
--- a/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java
+++ b/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java
@@ -85,6 +85,17 @@
         return null;
     }
 
+    /** Returns the first opening app target. */
+    public RemoteAnimationTargetCompat getFirstAppTarget() {
+        return apps.length > 0 ? apps[0] : null;
+    }
+
+    /** Returns the task id of the first opening app target, or -1 if none is found. */
+    public int getFirstAppTargetTaskId() {
+        RemoteAnimationTargetCompat target = getFirstAppTarget();
+        return target == null ? -1 : target.taskId;
+    }
+
     public boolean isAnimatingHome() {
         for (RemoteAnimationTargetCompat target : unfilteredApps) {
             if (target.activityType == RemoteAnimationTargetCompat.ACTIVITY_TYPE_HOME) {
diff --git a/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java b/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
index b79e934..4495455 100644
--- a/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
+++ b/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
@@ -181,6 +181,24 @@
         public boolean supportSwipePipToHome() {
             return false;
         }
+
+        /**
+         * @param progress The progress of the animation to the home screen.
+         * @return The current alpha to set on the animating app window.
+         */
+        protected float getWindowAlpha(float progress) {
+            // Alpha interpolates between [1, 0] between progress values [start, end]
+            final float start = 0f;
+            final float end = 0.85f;
+
+            if (progress <= start) {
+                return 1f;
+            }
+            if (progress >= end) {
+                return 0f;
+            }
+            return Utilities.mapToRange(progress, start, end, 1, 0, ACCEL_1_5);
+        }
     }
 
     /**
@@ -236,24 +254,6 @@
         return anim;
     }
 
-    /**
-     * @param progress The progress of the animation to the home screen.
-     * @return The current alpha to set on the animating app window.
-     */
-    protected float getWindowAlpha(float progress) {
-        // Alpha interpolates between [1, 0] between progress values [start, end]
-        final float start = 0f;
-        final float end = 0.85f;
-
-        if (progress <= start) {
-            return 1f;
-        }
-        if (progress >= end) {
-            return 0f;
-        }
-        return Utilities.mapToRange(progress, start, end, 1, 0, ACCEL_1_5);
-    }
-
     protected class SpringAnimationRunner extends AnimationSuccessListener
             implements RectFSpringAnim.OnUpdateListener, BuilderProxy {
 
@@ -292,7 +292,7 @@
 
             mMatrix.setRectToRect(mCropRectF, mWindowCurrentRect, ScaleToFit.FILL);
             float cornerRadius = Utilities.mapRange(progress, mStartRadius, mEndRadius);
-            float alpha = getWindowAlpha(progress);
+            float alpha = mAnimationFactory.getWindowAlpha(progress);
             if (config != null && PROTOTYPE_APP_CLOSE.get()) {
                 alpha = config.getWindowAlpha();
                 cornerRadius = config.getCornerRadius();
diff --git a/quickstep/src/com/android/quickstep/interaction/GestureSandboxActivity.java b/quickstep/src/com/android/quickstep/interaction/GestureSandboxActivity.java
index c3b342b..cf523d0 100644
--- a/quickstep/src/com/android/quickstep/interaction/GestureSandboxActivity.java
+++ b/quickstep/src/com/android/quickstep/interaction/GestureSandboxActivity.java
@@ -29,8 +29,6 @@
 import com.android.launcher3.R;
 import com.android.quickstep.interaction.TutorialController.TutorialType;
 
-import java.util.ArrayDeque;
-import java.util.Deque;
 import java.util.List;
 
 /** Shows the gesture interactive sandbox in full screen mode. */
@@ -39,8 +37,9 @@
     private static final String LOG_TAG = "GestureSandboxActivity";
 
     private static final String KEY_TUTORIAL_STEPS = "tutorial_steps";
+    private static final String KEY_CURRENT_STEP = "current_step";
 
-    private Deque<TutorialType> mTutorialSteps;
+    private TutorialType[] mTutorialSteps;
     private TutorialType mCurrentTutorialStep;
     private TutorialFragment mFragment;
 
@@ -55,9 +54,7 @@
 
         Bundle args = savedInstanceState == null ? getIntent().getExtras() : savedInstanceState;
         mTutorialSteps = getTutorialSteps(args);
-        mCurrentStep = 1;
-        mNumSteps = mTutorialSteps.size();
-        mCurrentTutorialStep = mTutorialSteps.pop();
+        mCurrentTutorialStep = mTutorialSteps[mCurrentStep - 1];
         mFragment = TutorialFragment.newInstance(mCurrentTutorialStep);
         getSupportFragmentManager().beginTransaction()
                 .add(R.id.gesture_tutorial_fragment_container, mFragment)
@@ -88,12 +85,13 @@
     @Override
     protected void onSaveInstanceState(@NonNull Bundle savedInstanceState) {
         savedInstanceState.putStringArray(KEY_TUTORIAL_STEPS, getTutorialStepNames());
+        savedInstanceState.putInt(KEY_CURRENT_STEP, mCurrentStep);
         super.onSaveInstanceState(savedInstanceState);
     }
 
     /** Returns true iff there aren't anymore tutorial types to display to the user. */
     public boolean isTutorialComplete() {
-        return mTutorialSteps.isEmpty();
+        return mCurrentStep >= mNumSteps;
     }
 
     public int getCurrentStep() {
@@ -121,7 +119,7 @@
             mFragment.closeTutorial();
             return;
         }
-        mCurrentTutorialStep = mTutorialSteps.pop();
+        mCurrentTutorialStep = mTutorialSteps[mCurrentStep];
         mFragment = TutorialFragment.newInstance(mCurrentTutorialStep);
         getSupportFragmentManager().beginTransaction()
             .replace(R.id.gesture_tutorial_fragment_container, mFragment)
@@ -131,10 +129,9 @@
     }
 
     private String[] getTutorialStepNames() {
-        String[] tutorialStepNames = new String[mTutorialSteps.size() + 1];
+        String[] tutorialStepNames = new String[mTutorialSteps.length];
 
-        int i = 1;
-        tutorialStepNames[0] = mCurrentTutorialStep.name();
+        int i = 0;
         for (TutorialType tutorialStep : mTutorialSteps) {
             tutorialStepNames[i++] = tutorialStep.name();
         }
@@ -142,25 +139,28 @@
         return tutorialStepNames;
     }
 
-    private Deque<TutorialType> getTutorialSteps(Bundle extras) {
-        Deque<TutorialType> defaultSteps = new ArrayDeque<>();
-        defaultSteps.push(TutorialType.RIGHT_EDGE_BACK_NAVIGATION);
+    private TutorialType[] getTutorialSteps(Bundle extras) {
+        TutorialType[] defaultSteps = new TutorialType[] {TutorialType.LEFT_EDGE_BACK_NAVIGATION};
 
         if (extras == null || !extras.containsKey(KEY_TUTORIAL_STEPS)) {
             return defaultSteps;
         }
 
         String[] tutorialStepNames = extras.getStringArray(KEY_TUTORIAL_STEPS);
+        int currentStep = extras.getInt(KEY_CURRENT_STEP, -1);
 
         if (tutorialStepNames == null) {
             return defaultSteps;
         }
 
-        Deque<TutorialType> tutorialSteps = new ArrayDeque<>();
-        for (String tutorialStepName : tutorialStepNames) {
-            tutorialSteps.addLast(TutorialType.valueOf(tutorialStepName));
+        TutorialType[] tutorialSteps = new TutorialType[tutorialStepNames.length];
+        for (int i = 0; i < tutorialStepNames.length; i++) {
+            tutorialSteps[i] = TutorialType.valueOf(tutorialStepNames[i]);
         }
 
+        mCurrentStep = Math.max(currentStep, 1);
+        mNumSteps = tutorialSteps.length;
+
         return tutorialSteps;
     }
 
diff --git a/quickstep/src/com/android/quickstep/interaction/TutorialController.java b/quickstep/src/com/android/quickstep/interaction/TutorialController.java
index c9da609..dfe0c72 100644
--- a/quickstep/src/com/android/quickstep/interaction/TutorialController.java
+++ b/quickstep/src/com/android/quickstep/interaction/TutorialController.java
@@ -58,6 +58,7 @@
 
     private static final int FEEDBACK_ANIMATION_MS = 250;
     private static final int RIPPLE_VISIBLE_MS = 300;
+    private static final int GESTURE_ANIMATION_DELAY_MS = 1500;
 
     final TutorialFragment mTutorialFragment;
     TutorialType mTutorialType;
@@ -65,6 +66,7 @@
 
     final TextView mCloseButton;
     final ViewGroup mFeedbackView;
+    final TextView mFeedbackTitleView;
     final ImageView mFeedbackVideoView;
     final ImageView mGestureVideoView;
     final RelativeLayout mFakeLauncherView;
@@ -80,6 +82,12 @@
 
     protected boolean mGestureCompleted = false;
 
+    // These runnables  should be used when posting callbacks to their views and cleared from their
+    // views before posting new callbacks.
+    private final Runnable mTitleViewCallback;
+    @Nullable private Runnable mFeedbackViewCallback;
+    @Nullable private Runnable mFeedbackVideoViewCallback;
+
     TutorialController(TutorialFragment tutorialFragment, TutorialType tutorialType) {
         mTutorialFragment = tutorialFragment;
         mTutorialType = tutorialType;
@@ -89,6 +97,8 @@
         mCloseButton = rootView.findViewById(R.id.gesture_tutorial_fragment_close_button);
         mCloseButton.setOnClickListener(button -> showSkipTutorialDialog());
         mFeedbackView = rootView.findViewById(R.id.gesture_tutorial_fragment_feedback_view);
+        mFeedbackTitleView = mFeedbackView.findViewById(
+                R.id.gesture_tutorial_fragment_feedback_title);
         mFeedbackVideoView = rootView.findViewById(R.id.gesture_tutorial_feedback_video);
         mGestureVideoView = rootView.findViewById(R.id.gesture_tutorial_gesture_video);
         mFakeLauncherView = rootView.findViewById(R.id.gesture_tutorial_fake_launcher_view);
@@ -103,6 +113,9 @@
         mTutorialStepView =
                 rootView.findViewById(R.id.gesture_tutorial_fragment_feedback_tutorial_step);
         mSkipTutorialDialog = createSkipTutorialDialog();
+
+        mTitleViewCallback = () -> mFeedbackTitleView.sendAccessibilityEvent(
+                AccessibilityEvent.TYPE_VIEW_FOCUSED);
     }
 
     private void showSkipTutorialDialog() {
@@ -169,7 +182,7 @@
             playFeedbackVideo(tutorialAnimation, gestureAnimation, () -> {
                 mFeedbackView.setTranslationY(0);
                 title.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
-            });
+            }, true);
         }
     }
 
@@ -192,15 +205,17 @@
                 isGestureSuccessful
                         ? R.string.gesture_tutorial_nice : R.string.gesture_tutorial_try_again,
                 subtitleResId,
-                isGestureSuccessful);
+                isGestureSuccessful,
+                false);
     }
 
     void showFeedback(
             int titleResId,
             int subtitleResId,
-            boolean isGestureSuccessful) {
-        TextView title = mFeedbackView.findViewById(R.id.gesture_tutorial_fragment_feedback_title);
-        title.setText(titleResId);
+            boolean isGestureSuccessful,
+            boolean useGestureAnimationDelay) {
+        mFeedbackTitleView.setText(titleResId);
+        mFeedbackTitleView.removeCallbacks(mTitleViewCallback);
         TextView subtitle =
                 mFeedbackView.findViewById(R.id.gesture_tutorial_fragment_feedback_subtitle);
         subtitle.setText(subtitleResId);
@@ -221,11 +236,8 @@
                             .setDuration(FEEDBACK_ANIMATION_MS)
                             .translationY(0)
                             .start();
-                    title.postDelayed(
-                            () -> title.sendAccessibilityEvent(
-                                    AccessibilityEvent.TYPE_VIEW_FOCUSED),
-                            FEEDBACK_ANIMATION_MS);
-                });
+                    mFeedbackTitleView.postDelayed(mTitleViewCallback, FEEDBACK_ANIMATION_MS);
+                }, useGestureAnimationDelay);
                 return;
             } else {
                 mTutorialFragment.releaseFeedbackVideoView();
@@ -237,10 +249,7 @@
                 .setDuration(FEEDBACK_ANIMATION_MS)
                 .translationY(0)
                 .start();
-        title.postDelayed(
-                () -> title.sendAccessibilityEvent(
-                        AccessibilityEvent.TYPE_VIEW_FOCUSED),
-                FEEDBACK_ANIMATION_MS);
+        mFeedbackTitleView.postDelayed(mTitleViewCallback, FEEDBACK_ANIMATION_MS);
     }
 
     void hideFeedback(boolean releaseFeedbackVideo) {
@@ -254,7 +263,8 @@
     private void playFeedbackVideo(
             @NonNull AnimatedVectorDrawable tutorialAnimation,
             @NonNull AnimatedVectorDrawable gestureAnimation,
-            @NonNull Runnable onStartRunnable) {
+            @NonNull Runnable onStartRunnable,
+            boolean useGestureAnimationDelay) {
 
         if (tutorialAnimation.isRunning()) {
             tutorialAnimation.reset();
@@ -270,7 +280,9 @@
                     gestureAnimation.stop();
                 }
 
-                onStartRunnable.run();
+                if (!useGestureAnimationDelay) {
+                    onStartRunnable.run();
+                }
             }
 
             @Override
@@ -284,8 +296,28 @@
             }
         });
 
-        tutorialAnimation.start();
-        mFeedbackVideoView.setVisibility(View.VISIBLE);
+        if (mFeedbackViewCallback != null) {
+            mFeedbackVideoView.removeCallbacks(mFeedbackViewCallback);
+            mFeedbackViewCallback = null;
+        }
+        if (mFeedbackVideoViewCallback != null) {
+            mFeedbackVideoView.removeCallbacks(mFeedbackVideoViewCallback);
+            mFeedbackVideoViewCallback = null;
+        }
+        if (useGestureAnimationDelay) {
+            mFeedbackViewCallback = onStartRunnable;
+            mFeedbackVideoViewCallback = () -> {
+                mFeedbackVideoView.setVisibility(View.VISIBLE);
+                tutorialAnimation.start();
+            };
+
+            mFeedbackVideoView.setVisibility(View.GONE);
+            mFeedbackView.post(mFeedbackViewCallback);
+            mFeedbackVideoView.postDelayed(mFeedbackVideoViewCallback, GESTURE_ANIMATION_DELAY_MS);
+        } else {
+            mFeedbackVideoView.setVisibility(View.VISIBLE);
+            tutorialAnimation.start();
+        }
     }
 
     void setRippleHotspot(float x, float y) {
diff --git a/quickstep/src/com/android/quickstep/interaction/TutorialFragment.java b/quickstep/src/com/android/quickstep/interaction/TutorialFragment.java
index ec26022..da0fc66 100644
--- a/quickstep/src/com/android/quickstep/interaction/TutorialFragment.java
+++ b/quickstep/src/com/android/quickstep/interaction/TutorialFragment.java
@@ -170,7 +170,8 @@
             Integer introTileStringResId = mTutorialController.getIntroductionTitle();
             Integer introSubtitleResId = mTutorialController.getIntroductionSubtitle();
             if (introTileStringResId != null && introSubtitleResId != null) {
-                mTutorialController.showFeedback(introTileStringResId, introSubtitleResId, false);
+                mTutorialController.showFeedback(
+                        introTileStringResId, introSubtitleResId, false, true);
                 mIntroductionShown = true;
             }
         }
@@ -252,7 +253,7 @@
     @Override
     public void onResume() {
         super.onResume();
-        if (mFragmentStopped) {
+        if (mFragmentStopped && mTutorialController != null) {
             mTutorialController.showFeedback();
             mFragmentStopped = false;
         } else {
diff --git a/quickstep/src/com/android/quickstep/interaction/TutorialStepIndicator.java b/quickstep/src/com/android/quickstep/interaction/TutorialStepIndicator.java
index eda6158..d880d74 100644
--- a/quickstep/src/com/android/quickstep/interaction/TutorialStepIndicator.java
+++ b/quickstep/src/com/android/quickstep/interaction/TutorialStepIndicator.java
@@ -23,6 +23,7 @@
 import android.widget.LinearLayout;
 
 import androidx.appcompat.content.res.AppCompatResources;
+import androidx.core.graphics.ColorUtils;
 
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
@@ -86,6 +87,8 @@
         for (int i = mTotalSteps; i < getChildCount(); i++) {
             removeViewAt(i);
         }
+        int stepIndicatorColor = GraphicsUtils.getAttrColor(
+                getContext(), android.R.attr.textColorPrimary);
         for (int i = 0; i < mTotalSteps; i++) {
             Drawable pageIndicatorPillDrawable = AppCompatResources.getDrawable(
                     getContext(), R.drawable.tutorial_step_indicator_pill);
@@ -104,13 +107,10 @@
             }
             if (pageIndicatorPillDrawable != null) {
                 if (i < mCurrentStep) {
-                    pageIndicatorPillDrawable.setTint(
-                            GraphicsUtils.getAttrColor(getContext(),
-                                    android.R.attr.textColorPrimary));
+                    pageIndicatorPillDrawable.setTint(stepIndicatorColor);
                 } else {
                     pageIndicatorPillDrawable.setTint(
-                            GraphicsUtils.getAttrColor(getContext(),
-                                    android.R.attr.textColorPrimaryInverse));
+                            ColorUtils.setAlphaComponent(stepIndicatorColor, 0x22));
                 }
             }
         }
diff --git a/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java b/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
index 9ea2369..65dba33 100644
--- a/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
+++ b/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
@@ -27,7 +27,6 @@
 import android.view.ViewOutlineProvider;
 import android.widget.RemoteViews.RemoteViewOutlineProvider;
 
-import com.android.launcher3.util.Themes;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 import com.android.launcher3.widget.RoundedCornerEnforcement;
 
@@ -62,7 +61,8 @@
         setClipToOutline(true);
     }
 
-    void init(LauncherAppWidgetHostView hostView, View backgroundView, float finalRadius) {
+    void init(LauncherAppWidgetHostView hostView, View backgroundView, float finalRadius,
+            int fallbackBackgroundColor) {
         mFinalRadius = finalRadius;
         mSourceView = backgroundView;
         mInitialOutlineRadius = getOutlineRadius(hostView, backgroundView);
@@ -81,7 +81,7 @@
             setBackground(mBackgroundProperties.mDrawable);
             mSourceView.setBackground(null);
         } else if (mOriginalForeground == null) {
-            mFallbackDrawable.setColor(Themes.getColorBackground(backgroundView.getContext()));
+            mFallbackDrawable.setColor(fallbackBackgroundColor);
             setBackground(mFallbackDrawable);
             mIsUsingFallback = true;
         }
diff --git a/quickstep/src/com/android/quickstep/views/FloatingWidgetView.java b/quickstep/src/com/android/quickstep/views/FloatingWidgetView.java
index 0012dd8..22ce942 100644
--- a/quickstep/src/com/android/quickstep/views/FloatingWidgetView.java
+++ b/quickstep/src/com/android/quickstep/views/FloatingWidgetView.java
@@ -34,10 +34,12 @@
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.dragndrop.DragLayer;
+import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.FloatingView;
 import com.android.launcher3.views.ListenerView;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 import com.android.launcher3.widget.RoundedCornerEnforcement;
+import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
 /** A view that mimics an App Widget through a launch animation. */
 @TargetApi(Build.VERSION_CODES.S)
@@ -148,7 +150,7 @@
 
     private void init(DragLayer dragLayer, LauncherAppWidgetHostView originalView,
             RectF widgetBackgroundPosition, Size windowSize, float windowCornerRadius,
-            boolean appTargetIsTranslucent) {
+            boolean appTargetIsTranslucent, int fallbackBackgroundColor) {
         mAppWidgetView = originalView;
         mAppWidgetView.beginDeferringUpdates();
         mBackgroundPosition = widgetBackgroundPosition;
@@ -163,7 +165,8 @@
         getRelativePosition(mAppWidgetBackgroundView, dragLayer, mBackgroundPosition);
         getRelativePosition(mAppWidgetBackgroundView, mAppWidgetView, mBackgroundOffset);
         if (!mAppTargetIsTranslucent) {
-            mBackgroundView.init(mAppWidgetView, mAppWidgetBackgroundView, windowCornerRadius);
+            mBackgroundView.init(mAppWidgetView, mAppWidgetBackgroundView, windowCornerRadius,
+                    fallbackBackgroundColor);
             // Layout call before GhostView creation so that the overlaid view isn't clipped
             layout(0, 0, windowSize.getWidth(), windowSize.getHeight());
             mForegroundOverlayView = GhostView.addGhost(mAppWidgetView, this);
@@ -274,7 +277,8 @@
      */
     public static FloatingWidgetView getFloatingWidgetView(Launcher launcher,
             LauncherAppWidgetHostView originalView, RectF widgetBackgroundPosition,
-            Size windowSize, float windowCornerRadius, boolean appTargetsAreTranslucent) {
+            Size windowSize, float windowCornerRadius, boolean appTargetsAreTranslucent,
+            int fallbackBackgroundColor) {
         final DragLayer dragLayer = launcher.getDragLayer();
         ViewGroup parent = (ViewGroup) dragLayer.getParent();
         FloatingWidgetView floatingView =
@@ -282,11 +286,22 @@
         floatingView.recycle();
 
         floatingView.init(dragLayer, originalView, widgetBackgroundPosition, windowSize,
-                windowCornerRadius, appTargetsAreTranslucent);
+                windowCornerRadius, appTargetsAreTranslucent, fallbackBackgroundColor);
         parent.addView(floatingView);
         return floatingView;
     }
 
+    /**
+     * Extract a background color from a target's task description, or fall back to the given
+     * context's theme background color.
+     */
+    public static int getDefaultBackgroundColor(
+            Context context, RemoteAnimationTargetCompat target) {
+        return (target != null && target.taskInfo.taskDescription != null)
+                ? target.taskInfo.taskDescription.getBackgroundColor()
+                : Themes.getColorBackground(context);
+    }
+
     private static void getRelativePosition(View descendant, View ancestor, RectF position) {
         float[] points = new float[]{0, 0, descendant.getWidth(), descendant.getHeight()};
         Utilities.getDescendantCoordRelativeToAncestor(descendant, ancestor, points,
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index cb9e1f3..a2d86bc 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -397,6 +397,13 @@
         return mapRange(interpolator.getInterpolation(progress), toMin, toMax);
     }
 
+    /** Bounds t between a lower and upper bound and maps the result to a range. */
+    public static float mapBoundToRange(float t, float lowerBound, float upperBound,
+            float toMin, float toMax, Interpolator interpolator) {
+        return mapToRange(boundToRange(t, lowerBound, upperBound), lowerBound, upperBound,
+                toMin, toMax, interpolator);
+    }
+
     public static float getProgress(float current, float min, float max) {
         return Math.abs(current - min) / Math.abs(max - min);
     }
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 17c8edc..2e1cc58 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -1922,6 +1922,11 @@
                     CellLayout layout = (CellLayout) cell.getParent().getParent();
                     layout.markCellsAsOccupiedForView(cell);
                 }
+            } else {
+                // When drag is cancelled, reattach content view back to its original parent.
+                if (mDragInfo.cell instanceof LauncherAppWidgetHostView) {
+                    d.dragView.detachContentView(/* reattachToPreviousParent= */ true);
+                }
             }
 
             final CellLayout parent = (CellLayout) cell.getParent().getParent();
diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetHost.java b/src/com/android/launcher3/widget/LauncherAppWidgetHost.java
index d745754..6dc6971 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetHost.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetHost.java
@@ -25,15 +25,20 @@
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
+import android.os.Bundle;
 import android.os.Handler;
 import android.util.SparseArray;
 import android.widget.Toast;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.BaseActivity;
+import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.model.WidgetsModel;
+import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.widget.custom.CustomWidgetManager;
@@ -292,8 +297,13 @@
         activity.startActivityForResult(intent, requestCode);
     }
 
-
-    public void startConfigActivity(BaseActivity activity, int widgetId, int requestCode) {
+    /**
+     * Launches an app widget's configuration activity.
+     * @param activity The activity from which to launch the configuration activity
+     * @param widgetId The id of the bound app widget to be configured
+     * @param requestCode An optional request code to be returned with the result
+     */
+    public void startConfigActivity(BaseDraggingActivity activity, int widgetId, int requestCode) {
         if (WidgetsModel.GO_DISABLE_WIDGETS) {
             sendActionCancelled(activity, requestCode);
             return;
@@ -301,13 +311,27 @@
 
         try {
             TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "start: startConfigActivity");
-            startAppWidgetConfigureActivityForResult(activity, widgetId, 0, requestCode, null);
+            startAppWidgetConfigureActivityForResult(activity, widgetId, 0, requestCode,
+                    getConfigurationActivityOptions(activity, widgetId));
         } catch (ActivityNotFoundException | SecurityException e) {
             Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
             sendActionCancelled(activity, requestCode);
         }
     }
 
+    /**
+     * Returns an {@link android.app.ActivityOptions} bundle from the {code activity} for launching
+     * the configuration of the {@code widgetId} app widget, or null of options cannot be produced.
+     */
+    @Nullable
+    private Bundle getConfigurationActivityOptions(BaseDraggingActivity activity, int widgetId) {
+        LauncherAppWidgetHostView view = mViews.get(widgetId);
+        if (view == null) return null;
+        Object tag = view.getTag();
+        if (!(tag instanceof ItemInfo)) return null;
+        return activity.getActivityLaunchOptions(view, (ItemInfo) tag).toBundle();
+    }
+
     private void sendActionCancelled(final BaseActivity activity, final int requestCode) {
         new Handler().post(() -> activity.onActivityResult(requestCode, RESULT_CANCELED, null));
     }
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
index 150bd99..e89aea7 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
@@ -298,6 +298,12 @@
         scrollToPositionAndMaintainOffset(positionForPackageUserKey, topForPackageUserKey);
     }
 
+    /** Returns the position of the currently expanded header, or empty if it's not present. */
+    public OptionalInt getSelectedHeaderPosition() {
+        if (mWidgetsContentVisiblePackageUserKey == null) return OptionalInt.empty();
+        return getPositionForPackageUserKey(mWidgetsContentVisiblePackageUserKey);
+    }
+
     /**
      * Returns the position of {@code key} in {@link #mVisibleEntries}, or  empty if it's not
      * present.
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
index 090362b..4f4f1a3 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
@@ -53,6 +53,7 @@
     private HeaderViewDimensionsProvider mHeaderViewDimensionsProvider;
     private int mLastVisibleWidgetContentTableHeight = 0;
     private int mWidgetHeaderHeight = 0;
+    private final int mCollapsedHeaderBottomMarginSize;
     @Nullable private OnContentChangeListener mOnContentChangeListener;
 
     public WidgetsRecyclerView(Context context) {
@@ -71,6 +72,10 @@
 
         ActivityContext activity = ActivityContext.lookupContext(getContext());
         DeviceProfile grid = activity.getDeviceProfile();
+
+        // The bottom margin used when the header is not expanded.
+        mCollapsedHeaderBottomMarginSize =
+                getResources().getDimensionPixelSize(R.dimen.widget_list_entry_bottom_margin);
     }
 
     @Override
@@ -182,10 +187,7 @@
                     && mLastVisibleWidgetContentTableHeight == 0
                     && view.getMeasuredHeight() > 0) {
                 // This assumes all header views are of the same height.
-                RecyclerView.LayoutParams layoutParams =
-                        (RecyclerView.LayoutParams) view.getLayoutParams();
-                mWidgetHeaderHeight = view.getMeasuredHeight() + layoutParams.topMargin
-                    + layoutParams.bottomMargin;
+                mWidgetHeaderHeight = view.getMeasuredHeight();
             }
         }
 
@@ -279,12 +281,17 @@
         if (untilIndex > mAdapter.getItems().size()) {
             untilIndex = mAdapter.getItems().size();
         }
+        int expandedHeaderPosition = mAdapter.getSelectedHeaderPosition().orElse(-1);
         int totalItemsHeight = 0;
         for (int i = 0; i < untilIndex; i++) {
             WidgetsListBaseEntry entry = mAdapter.getItems().get(i);
             if (entry instanceof WidgetsListHeaderEntry
                     || entry instanceof WidgetsListSearchHeaderEntry) {
                 totalItemsHeight += mWidgetHeaderHeight;
+                if (expandedHeaderPosition != i) {
+                    // If the header is collapsed, include the bottom margin it will use.
+                    totalItemsHeight += mCollapsedHeaderBottomMarginSize;
+                }
             } else if (entry instanceof WidgetsListContentEntry) {
                 totalItemsHeight += mLastVisibleWidgetContentTableHeight;
             } else {