Fix crash in frame deletion on Android

* java/org/gnu/emacs/EmacsWindow.java (destroyHandle):
Invalidate the input focus in the UI thread, as is proper.

1 files changed, 8 insertions, 2 deletions

diff --git a/java/org/gnu/emacs/EmacsWindow.java b/java/org/gnu/emacs/EmacsWindow.java
index f935850b22b..fec95526835 100644
--- a/java/org/gnu/emacs/EmacsWindow.java
+++ b/java/org/gnu/emacs/EmacsWindow.java
@@ -271,20 +271,26 @@ public final class EmacsWindow extends EmacsHandleObject
           }
       }
 
-    EmacsActivity.invalidateFocus (4);
-
+    /* This is just a sanity test and is not reliable since `children'
+       may be modified between isEmpty and handle destruction.  */
     if (!children.isEmpty ())
       throw new IllegalStateException ("Trying to destroy window with "
                                        + "children!");
 
     /* Remove the view from its parent and make it invisible.  */
     EmacsService.SERVICE.runOnUiThread (new Runnable () {
+        @Override
         public void
         run ()
         {
           ViewManager parent;
           EmacsWindowManager manager;
 
+          /* Invalidate the focus; this should transfer the input focus
+             to the next eligible window as this window is no longer
+             present in parent.children.  */
+          EmacsActivity.invalidateFocus (4);
+
           if (EmacsActivity.focusedWindow == EmacsWindow.this)
             EmacsActivity.focusedWindow = null;