Merge "Preventing from double remove starting window after Activity destoryed" into udc-dev am: b9df9a61b9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23657536

Change-Id: Ia49a5bbf8c8cb13c13143996ecd0e21c40e83eef
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashscreenWindowCreator.java b/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashscreenWindowCreator.java
index ae72220..4cfbbd9 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashscreenWindowCreator.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashscreenWindowCreator.java
@@ -20,6 +20,7 @@
 import static android.view.Choreographer.CALLBACK_INSETS_ANIMATION;
 import static android.window.StartingWindowInfo.STARTING_WINDOW_TYPE_LEGACY_SPLASH_SCREEN;
 
+import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.ActivityTaskManager;
@@ -370,8 +371,11 @@
         mStartingWindowRecordManager.addRecord(taskId, tView);
     }
 
-    private void removeWindowInner(View decorView, boolean hideView) {
+    private void removeWindowInner(@NonNull View decorView, boolean hideView) {
         requestTopUi(false);
+        if (!decorView.isAttachedToWindow()) {
+            return;
+        }
         if (hideView) {
             decorView.setVisibility(View.GONE);
         }