[RESTRICT AUTOMERGE] Do not resume activity if behind a translucent task am: 51d287d831

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16713985

Change-Id: I9b3c12eaf5f1e8597c1577610deb2c73e966c8ba

services/core/java/com/android/server/wm/EnsureActivitiesVisibleHelper.java

@@ -93,7 +93,7 @@ class EnsureActivitiesVisibleHelper {
         // activities are actually behind other fullscreen activities, but still required
         // to be visible (such as performing Recents animation).
         final boolean resumeTopActivity = mTop != null && !mTop.mLaunchTaskBehind
-                && mTask.isTopActivityFocusable()
+                && mTask.canBeResumed(starting)
                 && (starting == null || !starting.isDescendantOf(mTask));
 
         mTask.forAllActivities(a -> {

services/core/java/com/android/server/wm/RootWindowContainer.java

@@ -1948,7 +1948,8 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
 
         try {
             if (mTaskSupervisor.realStartActivityLocked(r, app,
-                    top == r && r.isFocusable() /*andResume*/, true /*checkConfig*/)) {
+                    top == r && r.getTask().canBeResumed(r) /*andResume*/,
+                    true /*checkConfig*/)) {
                 mTmpBoolean = true;
             }
         } catch (RemoteException e) {

services/core/java/com/android/server/wm/Task.java

@@ -4240,6 +4240,17 @@ class Task extends WindowContainer<WindowContainer> {
         return getVisibility(starting) != TASK_VISIBILITY_INVISIBLE;
     }
 
+    /**
+     * Returns {@code true} is the activity in this Task can be resumed.
+     *
+     * @param starting The currently starting activity or {@code null} if there is none.
+     */
+    boolean canBeResumed(@Nullable ActivityRecord starting) {
+        // No need to resume activity in Task that is not visible.
+        return isTopActivityFocusable()
+                && getVisibility(starting) == TASK_VISIBILITY_VISIBLE;
+    }
+
     /**
      * Returns true if the task should be visible.
      *