Merge "Reland "Prevent dismissing starting window when reopening app"" into qt-r1-dev

1 files changed, 13 insertions, 0 deletions

diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 03cae429904f..eab5e0dd270e 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -79,6 +79,7 @@ import static com.android.server.wm.WindowManagerService.UPDATE_FOCUS_NORMAL;
 import static com.android.server.wm.WindowManagerService.UPDATE_FOCUS_WILL_PLACE_SURFACES;
 import static com.android.server.wm.WindowManagerService.logWithStack;
 import static com.android.server.wm.WindowState.LEGACY_POLICY_VISIBILITY;
+import static com.android.server.wm.WindowStateAnimator.HAS_DRAWN;
 import static com.android.server.wm.WindowStateAnimator.STACK_CLIP_AFTER_ANIM;
 import static com.android.server.wm.WindowStateAnimator.STACK_CLIP_BEFORE_ANIM;
 
@@ -540,6 +541,18 @@ class AppWindowToken extends WindowToken implements WindowManagerService.AppFree
                 // If the app was already visible, don't reset the waitingToShow state.
                 if (isHidden()) {
                     waitingToShow = true;
+
+                    // Let's reset the draw state in order to prevent the starting window to be
+                    // immediately dismissed when the app still has the surface.
+                    forAllWindows(w -> {
+                        if (w.mWinAnimator.mDrawState == HAS_DRAWN) {
+                            w.mWinAnimator.resetDrawState();
+
+                            // Force add to mResizingWindows, so that we are guaranteed to get
+                            // another reportDrawn callback.
+                            w.resetLastContentInsets();
+                        }
+                    },  true /* traverseTopToBottom */);
                 }
             }