When tasks are moved to top or bottom, the app tokens are being rearranged.

The window token rearrangement is defered if an animation is
underway. Force a focus recomputation when the window tokens are finally
rearranged so that we have a valid focused window.

2 files changed, 5 insertions, 2 deletions

diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index 94667ebbac3e..d3645c35ffa5 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -9629,6 +9629,10 @@ public class WindowManagerService extends IWindowManager.Stub
                     moveInputMethodWindowsIfNeededLocked(false);
                     wallpaperMayChange = true;
                     mLayoutNeeded = true;
+                    // Since the window list has been rebuilt, focus might
+                    // have to be recomputed since the actual order of windows
+                    // might have changed again.
+                    focusMayChange = true;
                 }
                 
                 int adjResult = 0;
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index 56270f48b45a..c3aeca42ede6 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -7182,7 +7182,6 @@ public final class ActivityManagerService extends ActivityManagerNative implemen
 
         if (DEBUG_TRANSITION) Log.v(TAG,
                 "Prepare to back transition: task=" + task);
-        mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_TASK_TO_BACK);
         
         final int N = mHistory.size();
         int bottom = 0;
@@ -7212,7 +7211,7 @@ public final class ActivityManagerService extends ActivityManagerNative implemen
                 mNoAnimActivities.add(r);
             }
         } else {
-            mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_TASK_TO_FRONT);
+            mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_TASK_TO_BACK);
         }
         mWindowManager.moveAppTokensToBottom(moved);
         if (VALIDATE_TOKENS) {