DO NOT MERGE -- Only use saved surface if started by launcher or moved to front am: 813be138ae (8673e303) · Commits · e / os / android_frameworks_base

core/java/android/view/IWindowManager.aidl

+1 −1

Original line number	Diff line number	Diff line
		@@ -173,7 +173,7 @@ interface IWindowManager
		in CompatibilityInfo compatInfo, CharSequence nonLocalizedLabel, int labelRes,
		int icon, int logo, int windowFlags, IBinder transferFrom, boolean createIfNeeded);
		void setAppVisibility(IBinder token, boolean visible);
		void notifyAppResumed(IBinder token, boolean wasStopped);
		void notifyAppResumed(IBinder token, boolean wasStopped, boolean allowSavedSurface);
		void notifyAppStopped(IBinder token);
		void startAppFreezingScreen(IBinder token, int configChanges);
		void stopAppFreezingScreen(IBinder token, boolean force);

+8 −0

Original line number	Diff line number	Diff line
		@@ -750,6 +750,14 @@ final class ActivityRecord {
		&& intent.getType() == null;
		}

		static boolean isMainIntent(Intent intent) {
		return Intent.ACTION_MAIN.equals(intent.getAction())
		&& intent.hasCategory(Intent.CATEGORY_LAUNCHER)
		&& intent.getCategories().size() == 1
		&& intent.getData() == null
		&& intent.getType() == null;
		}

		private boolean canLaunchHomeActivity(int uid, ActivityRecord sourceRecord) {
		if (uid == Process.myUid() \|\| uid == 0) {
		// System process can launch home activity.

+13 −1

Original line number	Diff line number	Diff line
		@@ -2485,13 +2485,25 @@ final class ActivityStack {
		}
		}

		boolean allowSavedSurface = true;
		if (next.newIntents != null) {
		// Restrict saved surface to launcher start, or there is no intent at all
		// (eg. task being brought to front). If the intent is something else,
		// likely the app is going to show some specific page or view, instead of
		// what's left last time.
		for (int i = next.newIntents.size() - 1; i >= 0; i--) {
		final Intent intent = next.newIntents.get(i);
		if (intent != null && !ActivityRecord.isMainIntent(intent)) {
		allowSavedSurface = false;
		break;
		}
		}
		next.app.thread.scheduleNewIntent(next.newIntents, next.appToken);
		}

		// Well the app will no longer be stopped.
		// Clear app token stopped state in window manager if needed.
		mWindowManager.notifyAppResumed(next.appToken, next.stopped);
		mWindowManager.notifyAppResumed(next.appToken, next.stopped, allowSavedSurface);

		EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, next.userId,
		System.identityHashCode(next), next.task.taskId, next.shortComponentName);

+6 −2

Original line number	Diff line number	Diff line
		@@ -439,12 +439,16 @@ class AppWindowToken extends WindowToken {
		* Notify that the app is now resumed, and it was not stopped before, perform a clean
		* up of the surfaces
		*/
		void notifyAppResumed(boolean wasStopped) {
		if (DEBUG_ADD_REMOVE) Slog.v(TAG, "notifyAppResumed: wasStopped=" + wasStopped + " " + this);
		void notifyAppResumed(boolean wasStopped, boolean allowSavedSurface) {
		if (DEBUG_ADD_REMOVE) Slog.v(TAG, "notifyAppResumed: wasStopped=" + wasStopped
		+ " allowSavedSurface=" + allowSavedSurface + " " + this);
		mAppStopped = false;
		if (!wasStopped) {
		destroySurfaces(true /cleanupOnResume/);
		}
		if (!allowSavedSurface) {
		destroySavedSurfaces();
		}
		}

		/**

+2 −2

Original line number	Diff line number	Diff line
		@@ -4479,7 +4479,7 @@ public class WindowManagerService extends IWindowManager.Stub
		}

		@Override
		public void notifyAppResumed(IBinder token, boolean wasStopped) {
		public void notifyAppResumed(IBinder token, boolean wasStopped, boolean allowSavedSurface) {
		if (!checkCallingPermission(android.Manifest.permission.MANAGE_APP_TOKENS,
		"notifyAppResumed()")) {
		throw new SecurityException("Requires MANAGE_APP_TOKENS permission");
		@@ -4492,7 +4492,7 @@ public class WindowManagerService extends IWindowManager.Stub
		Slog.w(TAG_WM, "Attempted to notify resumed of non-existing app token: " + token);
		return;
		}
		wtoken.notifyAppResumed(wasStopped);
		wtoken.notifyAppResumed(wasStopped, allowSavedSurface);
		}
		}