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Commit 0776b3b4 authored by Yurii Zubrytskyi's avatar Yurii Zubrytskyi
Browse files

[sysui] Use weak reference for the listener in NavigationBarTransitions 

The listener is the only thing keeping objects alive after
switching dark theme, bringing the number of Resources.Theme
objects to thousands.

Bug: 242005877
Test: manual, 10k theme switches to verify there's fewer active
      theme objects
Change-Id: I59ff27dacd4bcad933341886c249074cf7df6dc9
parent ab3cb30a

packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarTransitions.java

+21 −6
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ import com.android.systemui.statusbar.phone.BarTransitions; 
import com.android.systemui.statusbar.phone.LightBarTransitionsController;



import java.io.PrintWriter;

import java.lang.ref.WeakReference;

import java.util.ArrayList;

import java.util.List;
@@ -75,15 +76,27 @@ public final class NavigationBarTransitions extends BarTransitions implements 
    private List<DarkIntensityListener> mDarkIntensityListeners;



    private final Handler mHandler = Handler.getMain();

    private final IWallpaperVisibilityListener mWallpaperVisibilityListener =

            new IWallpaperVisibilityListener.Stub() {



    static final class WallpaperVisibilityListener extends IWallpaperVisibilityListener.Stub {

        private final WeakReference<NavigationBarTransitions> mSelf;



        WallpaperVisibilityListener(NavigationBarTransitions self) {

            mSelf = new WeakReference<>(self);

        }



        @Override

        public void onWallpaperVisibilityChanged(boolean newVisibility,

                int displayId) throws RemoteException {

            mWallpaperVisible = newVisibility;

            mHandler.post(() -> applyLightsOut(true, false));

            NavigationBarTransitions self = mSelf.get();

            if (self == null) {

                return;

            }

            self.mWallpaperVisible = newVisibility;

            self.mHandler.post(() -> self.applyLightsOut(true, false));

        }

    }

    };



    private final IWallpaperVisibilityListener mWallpaperVisibilityListener;



    @Inject

    public NavigationBarTransitions(
@@ -91,6 +104,7 @@ public final class NavigationBarTransitions extends BarTransitions implements 
            IWindowManager windowManagerService,

            LightBarTransitionsController.Factory lightBarTransitionsControllerFactory) {

        super(view, R.drawable.nav_background);



        mView = view;

        mWindowManagerService = windowManagerService;

        mLightTransitionsController = lightBarTransitionsControllerFactory.create(this);
@@ -98,6 +112,7 @@ public final class NavigationBarTransitions extends BarTransitions implements 
                .getBoolean(R.bool.config_navigation_bar_enable_auto_dim_no_visible_wallpaper);

        mDarkIntensityListeners = new ArrayList();



        mWallpaperVisibilityListener = new WallpaperVisibilityListener(this);

        try {

            mWallpaperVisible = mWindowManagerService.registerWallpaperVisibilityListener(

                    mWallpaperVisibilityListener, Display.DEFAULT_DISPLAY);