SwipeDismissLayout makes activity opaque only after entry animation ends. (6eafa902) · Commits · e / os / android_frameworks_base

core/java/android/app/Activity.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -5585,6 +5585,16 @@ public class Activity extends ContextThemeWrapper
		public void onEnterAnimationComplete() {
		}

		/**
		* @hide
		*/
		public void dispatchEnterAnimationComplete() {
		onEnterAnimationComplete();
		if (getWindow() != null && getWindow().getDecorView() != null) {
		getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete();
		}
		}

		/**
		* Adjust the current immersive mode setting.
		*

core/java/android/app/ActivityThread.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -2519,7 +2519,7 @@ public final class ActivityThread {
		private void handleEnterAnimationComplete(IBinder token) {
		ActivityClientRecord r = mActivities.get(token);
		if (r != null) {
		r.activity.onEnterAnimationComplete();
		r.activity.dispatchEnterAnimationComplete();
		}
		}

core/java/android/view/ViewTreeObserver.java

+49 −0

Original line number	Diff line number	Diff line
		@@ -37,6 +37,8 @@ public final class ViewTreeObserver {
		private CopyOnWriteArrayList<OnWindowAttachListener> mOnWindowAttachListeners;
		private CopyOnWriteArrayList<OnGlobalFocusChangeListener> mOnGlobalFocusListeners;
		private CopyOnWriteArrayList<OnTouchModeChangeListener> mOnTouchModeChangeListeners;
		private CopyOnWriteArrayList<OnEnterAnimationCompleteListener>
		mOnEnterAnimationCompleteListeners;

		// Non-recursive listeners use CopyOnWriteArray
		// Any listener invoked from ViewRootImpl.performTraversals() should not be recursive
		@@ -297,6 +299,13 @@ public final class ViewTreeObserver {
		public void onComputeInternalInsets(InternalInsetsInfo inoutInfo);
		}

		/**
		* @hide
		*/
		public interface OnEnterAnimationCompleteListener {
		public void onEnterAnimationComplete();
		}

		/**
		* Creates a new ViewTreeObserver. This constructor should not be called
		*/
		@@ -715,6 +724,29 @@ public final class ViewTreeObserver {
		mOnComputeInternalInsetsListeners.remove(victim);
		}

		/**
		* @hide
		*/
		public void addOnEnterAnimationCompleteListener(OnEnterAnimationCompleteListener listener) {
		checkIsAlive();
		if (mOnEnterAnimationCompleteListeners == null) {
		mOnEnterAnimationCompleteListeners =
		new CopyOnWriteArrayList<OnEnterAnimationCompleteListener>();
		}
		mOnEnterAnimationCompleteListeners.add(listener);
		}

		/**
		* @hide
		*/
		public void removeOnEnterAnimationCompleteListener(OnEnterAnimationCompleteListener listener) {
		checkIsAlive();
		if (mOnEnterAnimationCompleteListeners == null) {
		return;
		}
		mOnEnterAnimationCompleteListeners.remove(listener);
		}

		private void checkIsAlive() {
		if (!mAlive) {
		throw new IllegalStateException("This ViewTreeObserver is not alive, call "
		@@ -935,6 +967,23 @@ public final class ViewTreeObserver {
		}
		}

		/**
		* @hide
		*/
		public final void dispatchOnEnterAnimationComplete() {
		// NOTE: because of the use of CopyOnWriteArrayList, we must use an iterator to
		// perform the dispatching. The iterator is a safe guard against listeners that
		// could mutate the list by calling the various add/remove methods. This prevents
		// the array from being modified while we iterate it.
		final CopyOnWriteArrayList<OnEnterAnimationCompleteListener> listeners =
		mOnEnterAnimationCompleteListeners;
		if (listeners != null && !listeners.isEmpty()) {
		for (OnEnterAnimationCompleteListener listener : listeners) {
		listener.onEnterAnimationComplete();
		}
		}
		}

		/**
		* Copy on write array. This array is not thread safe, and only one loop can
		* iterate over this array at any given time. This class avoids allocations

core/java/com/android/internal/widget/SwipeDismissLayout.java

+32 −7

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ import android.view.VelocityTracker;
		import android.view.View;
		import android.view.ViewConfiguration;
		import android.view.ViewGroup;
		import android.view.ViewTreeObserver;
		import android.view.animation.AccelerateInterpolator;
		import android.view.animation.DecelerateInterpolator;
		import android.widget.FrameLayout;
		@@ -76,6 +77,19 @@ public class SwipeDismissLayout extends FrameLayout {

		private OnDismissedListener mDismissedListener;
		private OnSwipeProgressChangedListener mProgressListener;
		private ViewTreeObserver.OnEnterAnimationCompleteListener mOnEnterAnimationCompleteListener =
		new ViewTreeObserver.OnEnterAnimationCompleteListener() {
		@Override
		public void onEnterAnimationComplete() {
		// SwipeDismissLayout assumes that the host Activity is translucent
		// and temporarily disables translucency when it is fully visible.
		// As soon as the user starts swiping, we will re-enable
		// translucency.
		if (getContext() instanceof Activity) {
		((Activity) getContext()).convertFromTranslucent();
		}
		}
		};

		private float mLastX;

		@@ -103,13 +117,6 @@ public class SwipeDismissLayout extends FrameLayout {
		android.R.integer.config_shortAnimTime);
		mCancelInterpolator = new DecelerateInterpolator(1.5f);
		mDismissInterpolator = new AccelerateInterpolator(1.5f);
		// SwipeDismissLayout assumes that the host Activity is translucent
		// and temporarily disables translucency when it is fully visible.
		// As soon as the user starts swiping, we will re-enable
		// translucency.
		if (context instanceof Activity) {
		((Activity) context).convertFromTranslucent();
		}
		}

		public void setOnDismissedListener(OnDismissedListener listener) {
		@@ -120,6 +127,24 @@ public class SwipeDismissLayout extends FrameLayout {
		mProgressListener = listener;
		}

		@Override
		protected void onAttachedToWindow() {
		super.onAttachedToWindow();
		if (getContext() instanceof Activity) {
		getViewTreeObserver().addOnEnterAnimationCompleteListener(
		mOnEnterAnimationCompleteListener);
		}
		}

		@Override
		protected void onDetachedFromWindow() {
		super.onDetachedFromWindow();
		if (getContext() instanceof Activity) {
		getViewTreeObserver().removeOnEnterAnimationCompleteListener(
		mOnEnterAnimationCompleteListener);
		}
		}

		@Override
		public boolean onInterceptTouchEvent(MotionEvent ev) {
		// offset because the view is translated during swipe