Fixing issue with recents not being hidden for translucent apps.

- When tapping home, we can't depend on the stack state to determine
  whether or not hide recents since there can be translucent windows
  above it.  In this case, we just dismiss recents directly since the
  receiver will only be registered while recents is visible.

Bug: 20110140

Change-Id: I6b796cc4cbd790aac9a0857549e34117adb808d8

packages/SystemUI/src/com/android/systemui/recents/Recents.java

@@ -316,14 +316,12 @@ public class Recents extends SystemUI
 
     void hideRecentsInternal(boolean triggeredFromAltTab, boolean triggeredFromHomeKey) {
         if (mBootCompleted) {
-            ActivityManager.RunningTaskInfo topTask = mSystemServicesProxy.getTopMostTask();
-            if (topTask != null && mSystemServicesProxy.isRecentsTopMost(topTask, null)) {
-                // Notify recents to hide itself
-                Intent intent = createLocalBroadcastIntent(mContext, ACTION_HIDE_RECENTS_ACTIVITY);
-                intent.putExtra(EXTRA_TRIGGERED_FROM_ALT_TAB, triggeredFromAltTab);
-                intent.putExtra(EXTRA_TRIGGERED_FROM_HOME_KEY, triggeredFromHomeKey);
-                mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT);
-            }
+            // Defer to the activity to handle hiding recents, if it handles it, then it must still
+            // be visible
+            Intent intent = createLocalBroadcastIntent(mContext, ACTION_HIDE_RECENTS_ACTIVITY);
+            intent.putExtra(EXTRA_TRIGGERED_FROM_ALT_TAB, triggeredFromAltTab);
+            intent.putExtra(EXTRA_TRIGGERED_FROM_HOME_KEY, triggeredFromHomeKey);
+            mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT);
         }
     }
 

packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java

@@ -134,9 +134,9 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
                     dismissRecentsToFocusedTaskOrHome(false);
                 } else if (intent.getBooleanExtra(Recents.EXTRA_TRIGGERED_FROM_HOME_KEY, false)) {
                     // Otherwise, dismiss Recents to Home
-                    dismissRecentsToHome(true);
+                    dismissRecentsToHomeRaw(true);
                 } else {
-                    // Do nothing, another activity is being launched on top of Recents
+                    // Do nothing
                 }
             } else if (action.equals(Recents.ACTION_TOGGLE_RECENTS_ACTIVITY)) {
                 // If we are toggling Recents, then first unfilter any filtered stacks first

packages/SystemUI/src/com/android/systemui/recents/RecentsAppWidgetHost.java

@@ -70,6 +70,7 @@ public class RecentsAppWidgetHost extends AppWidgetHost {
     @Override
     protected void onProviderChanged(int appWidgetId, AppWidgetProviderInfo appWidgetInfo) {
         if (mCb == null) return;
+        if (mContext == null) return;
 
         SystemServicesProxy ssp = RecentsTaskLoader.getInstance().getSystemServicesProxy();
         if (appWidgetId > -1 && appWidgetId == mConfig.searchBarAppWidgetId) {