Don't clear visible-behind activity if it is top (64ccb708) · Commits · e / os / android_frameworks_base

core/java/android/app/Activity.java

+18 −12

Original line number	Original line	Diff line number	Diff line
	@@ -5466,27 +5466,33 @@ public class Activity extends ContextThemeWrapper

	/**		/**
	* Activities that want to remain visible behind a translucent activity above them must call		* Activities that want to remain visible behind a translucent activity above them must call
	* this method anytime before a return from {@link #onPause()}. If this call is successful		* this method anytime between the start of {@link #onResume()} and the return from
	* then the activity will remain visible when {@link #onPause()} is called, and can continue to		* {@link #onPause()}. If this call is successful then the activity will remain visible after
	* play media in the background, but it must stop playing and release resources prior to or		* {@link #onPause()} is called, and is allowed to continue playing media in the background.
	* within the call to {@link #onVisibleBehindCanceled()}. If this call returns false, the		*
	* activity will not be visible in the background, and must release any media resources		* <p>The actions of this call are reset each time that this activity is brought to the
	* immediately.		* front. That is, every time {@link #onResume()} is called the activity will be assumed
			* to not have requested visible behind. Therefore, if you want this activity to continue to
			* be visible in the background you must call this method again.
	*		*
	* <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop		* <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop
	* for dialog and translucent activities.		* for dialog and translucent activities.
	*		*
	* <p>False will be returned any time this method is call between the return of onPause and		* <p>Under all circumstances, the activity must stop playing and release resources prior to or
			* within a call to {@link #onVisibleBehindCanceled()} or if this call returns false.
			*
			* <p>False will be returned any time this method is called between the return of onPause and
	* the next call to onResume.		* the next call to onResume.
	*		*
	* @param visible true to notify the system that the activity wishes to be visible behind other		* @param visible true to notify the system that the activity wishes to be visible behind other
	* translucent activities, false to indicate otherwise. Resources must be		* translucent activities, false to indicate otherwise. Resources must be
	* released when passing false to this method.		* released when passing false to this method.
	* @return the resulting visibiity state. If true the activity may remain visible beyond		* @return the resulting visibiity state. If true the activity will remain visible beyond
	* {@link #onPause()}. If false then the activity may not count on being visible behind		* {@link #onPause()} if the next activity is translucent or not fullscreen. If false
	* other translucent activities, and must stop any media playback and release resources.		* then the activity may not count on being visible behind other translucent activities,
	* Returning false may occur in lieu of a call to onVisibleBehindCanceled() so the return		* and must stop any media playback and release resources.
	* value must be checked.		* Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so
			* the return value must be checked.
	*		*
	* @see #onVisibleBehindCanceled()		* @see #onVisibleBehindCanceled()
	* @see #onBackgroundVisibleBehindChanged(boolean)		* @see #onBackgroundVisibleBehindChanged(boolean)

services/core/java/com/android/server/am/ActivityStack.java

+10 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1105,6 +1105,11 @@ final class ActivityStack {
	invalidateLastScreenshot();		invalidateLastScreenshot();
	}		}
	next.returningOptions = null;		next.returningOptions = null;

			if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == next) {
			// When resuming an activity, require it to call requestVisibleBehind() again.
			mActivityContainer.mActivityDisplay.setVisibleBehindActivity(null);
			}
	}		}

	private void setVisibile(ActivityRecord r, boolean visible) {		private void setVisibile(ActivityRecord r, boolean visible) {
	@@ -3291,6 +3296,11 @@ final class ActivityStack {
	if (hasVisibleBehindActivity() &&		if (hasVisibleBehindActivity() &&
	!mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) {		!mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) {
	final ActivityRecord r = getVisibleBehindActivity();		final ActivityRecord r = getVisibleBehindActivity();
			if (r == topRunningActivityLocked(null)) {
			// Don't release the top activity if it has requested to run behind the next
			// activity.
			return;
			}
	if (DEBUG_STATES) Slog.d(TAG, "releaseBackgroundResources activtyDisplay=" +		if (DEBUG_STATES) Slog.d(TAG, "releaseBackgroundResources activtyDisplay=" +
	mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app +		mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app +
	" thread=" + r.app.thread);		" thread=" + r.app.thread);