Merge "Fix nav bar leak in SystemUI" into qt-qpr1-dev am: d6e73ec8f1

Change-Id: I39643a2f6e7edc9af7221a295eb201cda3244534

core/java/android/view/CompositionSamplingListener.java

@@ -29,7 +29,7 @@ import java.util.concurrent.Executor;
  */
 public abstract class CompositionSamplingListener {
 
-    private final long mNativeListener;
+    private long mNativeListener;
     private final Executor mExecutor;
 
     public CompositionSamplingListener(Executor executor) {
@@ -37,13 +37,19 @@ public abstract class CompositionSamplingListener {
         mNativeListener = nativeCreate(this);
     }
 
+    public void destroy() {
+        if (mNativeListener == 0) {
+            return;
+        }
+        unregister(this);
+        nativeDestroy(mNativeListener);
+        mNativeListener = 0;
+    }
+
     @Override
     protected void finalize() throws Throwable {
         try {
-            if (mNativeListener != 0) {
+            destroy();
-                unregister(this);
-                nativeDestroy(mNativeListener);
-            }
         } finally {
             super.finalize();
         }
@@ -59,6 +65,9 @@ public abstract class CompositionSamplingListener {
      */
     public static void register(CompositionSamplingListener listener,
             int displayId, IBinder stopLayer, Rect samplingArea) {
+        if (listener.mNativeListener == 0) {
+            return;
+        }
         Preconditions.checkArgument(displayId == Display.DEFAULT_DISPLAY,
                 "default display only for now");
         nativeRegister(listener.mNativeListener, stopLayer, samplingArea.left, samplingArea.top,
@@ -69,6 +78,9 @@ public abstract class CompositionSamplingListener {
      * Unregisters a sampling listener.
      */
     public static void unregister(CompositionSamplingListener listener) {
+        if (listener.mNativeListener == 0) {
+            return;
+        }
         nativeUnregister(listener.mNativeListener);
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/phone/NavBarTintController.java

@@ -107,6 +107,11 @@ public class NavBarTintController implements View.OnAttachStateChangeListener,
         requestUpdateSamplingListener();
     }
 
+    void stopAndDestroy() {
+        stop();
+        mSamplingListener.destroy();
+    }
+
     @Override
     public void onViewAttachedToWindow(View view) {
         requestUpdateSamplingListener();
@@ -114,8 +119,7 @@ public class NavBarTintController implements View.OnAttachStateChangeListener,
 
     @Override
     public void onViewDetachedFromWindow(View view) {
-        // Defer calling updateSamplingListener the attach info has not yet been reset
+        stopAndDestroy();
-        requestUpdateSamplingListener();
     }
 
     @Override

packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarFragment.java

@@ -137,6 +137,7 @@ public class NavigationBarFragment extends LifecycleFragment implements Callback
     private final MetricsLogger mMetricsLogger;
     private final DeviceProvisionedController mDeviceProvisionedController;
     private final StatusBarStateController mStatusBarStateController;
+    private final NavigationModeController mNavigationModeController;
 
     protected NavigationBarView mNavigationBarView = null;
 
@@ -253,6 +254,7 @@ public class NavigationBarFragment extends LifecycleFragment implements Callback
         mAssistManager = assistManager;
         mAssistantAvailable = mAssistManager.getAssistInfoForUser(UserHandle.USER_CURRENT) != null;
         mOverviewProxyService = overviewProxyService;
+        mNavigationModeController = navigationModeController;
         mNavBarMode = navigationModeController.addListener(this);
     }
 
@@ -292,6 +294,7 @@ public class NavigationBarFragment extends LifecycleFragment implements Callback
     @Override
     public void onDestroy() {
         super.onDestroy();
+        mNavigationModeController.removeListener(this);
         mAccessibilityManagerWrapper.removeCallback(mAccessibilityListener);
         mContentResolver.unregisterContentObserver(mMagnificationObserver);
         mContentResolver.unregisterContentObserver(mAssistContentObserver);

packages/SystemUI/src/com/android/systemui/statusbar/phone/RegionSamplingHelper.java

@@ -127,6 +127,11 @@ public class RegionSamplingHelper implements View.OnAttachStateChangeListener,
         updateSamplingListener();
     }
 
+    void stopAndDestroy() {
+        stop();
+        mSamplingListener.destroy();
+    }
+
     @Override
     public void onViewAttachedToWindow(View view) {
         updateSamplingListener();
@@ -134,9 +139,7 @@ public class RegionSamplingHelper implements View.OnAttachStateChangeListener,
 
     @Override
     public void onViewDetachedFromWindow(View view) {
-        // isAttachedToWindow is only changed after this call to the listeners, so let's post it
+        stopAndDestroy();
-        // instead
-        postUpdateSamplingListener();
     }
 
     @Override