Fix reboot loop caused by keyguard appwidget cleanup

Bug: 7591092

Author: mikejurka

policy/src/com/android/internal/policy/impl/keyguard/KeyguardHostView.java

@@ -81,6 +81,7 @@ public class KeyguardHostView extends KeyguardViewBase {
     private int mAppWidgetToShow;
 
     private boolean mCheckAppWidgetConsistencyOnBootCompleted = false;
+    private boolean mCleanupAppWidgetsOnBootCompleted = false;
 
     protected OnDismissAction mDismissAction;
 
@@ -155,6 +156,12 @@ public KeyguardHostView(Context context, AttributeSet attrs) {
     }
 
     private void cleanupAppWidgetIds() {
+        // Since this method may delete a widget (which we can't do until boot completed) we
+        // may have to defer it until after boot complete.
+        if (!KeyguardUpdateMonitor.getInstance(mContext).hasBootCompleted()) {
+            mCleanupAppWidgetsOnBootCompleted = true;
+            return;
+        }
         // Clean up appWidgetIds that are bound to lockscreen, but not actually used
         // This is only to clean up after another bug: we used to not call
         // deleteAppWidgetId when a user manually deleted a widget in keyguard. This code
@@ -190,6 +197,10 @@ public void onBootCompleted() {
                 mSwitchPageRunnable.run();
                 mCheckAppWidgetConsistencyOnBootCompleted = false;
             }
+            if (mCleanupAppWidgetsOnBootCompleted) {
+                cleanupAppWidgetIds();
+                mCleanupAppWidgetsOnBootCompleted = false;
+            }
         }
     };