diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java
index ac4c2d595..c9fc1a57c 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java
@@ -44,6 +44,7 @@ import com.fongmi.android.tv.model.SiteViewModel;
 import com.fongmi.android.tv.player.Source;
 import com.fongmi.android.tv.player.exo.CacheManager;
 import com.fongmi.android.tv.server.Server;
+import com.fongmi.android.tv.service.PlaybackService;
 import com.fongmi.android.tv.ui.adapter.BaseDiffCallback;
 import com.fongmi.android.tv.ui.base.BaseActivity;
 import com.fongmi.android.tv.ui.custom.CustomRowPresenter;
@@ -476,14 +477,14 @@ public class HomeActivity extends BaseActivity implements CustomTitleView.Listen
         } else if (mBinding.recycler.getSelectedPosition() != 0) {
             mBinding.recycler.scrollToPosition(0);
         } else {
-            super.onBackInvoked();
+            if (PlaybackService.isRunning()) moveTaskToBack(true);
+            else super.onBackInvoked();
         }
     }
 
     @Override
     protected void onDestroy() {
         CacheManager.get().release();
-        WallConfig.get().clear();
         LiveConfig.get().clear();
         VodConfig.get().clear();
         AppDatabase.backup();
diff --git a/app/src/main/java/com/fongmi/android/tv/api/config/LiveConfig.java b/app/src/main/java/com/fongmi/android/tv/api/config/LiveConfig.java
index 86c64b062..d839c5180 100644
--- a/app/src/main/java/com/fongmi/android/tv/api/config/LiveConfig.java
+++ b/app/src/main/java/com/fongmi/android/tv/api/config/LiveConfig.java
@@ -91,10 +91,6 @@ public class LiveConfig {
     }
 
     public LiveConfig init() {
-        this.home = null;
-        this.ads = new ArrayList<>();
-        this.rules = new ArrayList<>();
-        this.lives = new ArrayList<>();
         return config(Config.live());
     }
 
@@ -106,10 +102,8 @@ public class LiveConfig {
     }
 
     public LiveConfig clear() {
-        this.home = null;
-        this.ads.clear();
-        this.rules.clear();
-        this.lives.clear();
+        home = null;
+        lives = null;
         return this;
     }
 
@@ -133,7 +127,7 @@ public class LiveConfig {
             OkHttp.cancel(TAG);
             Server.get().start();
             String text = Decoder.getJson(UrlUtil.convert(config.getUrl()), TAG);
-            if (!Json.isObj(text)) clear().parseText(text, callback);
+            if (!Json.isObj(text)) parseText(text, callback);
             else checkJson(Json.parse(text).getAsJsonObject(), callback);
             config.update();
         } catch (Throwable e) {
@@ -180,7 +174,6 @@ public class LiveConfig {
 
     private void parseConfig(JsonObject object, Callback callback) {
         try {
-            clear();
             initLive(object);
             initOther(object);
         } catch (Throwable e) {
diff --git a/app/src/main/java/com/fongmi/android/tv/api/config/VodConfig.java b/app/src/main/java/com/fongmi/android/tv/api/config/VodConfig.java
index 22916bd7c..4d73daad5 100644
--- a/app/src/main/java/com/fongmi/android/tv/api/config/VodConfig.java
+++ b/app/src/main/java/com/fongmi/android/tv/api/config/VodConfig.java
@@ -80,17 +80,7 @@ public class VodConfig {
     }
 
     public VodConfig init() {
-        this.wall = null;
-        this.home = null;
-        this.parse = null;
-        this.config = Config.vod();
-        this.ads = new ArrayList<>();
-        this.doh = new ArrayList<>();
-        this.rules = new ArrayList<>();
-        this.sites = new ArrayList<>();
-        this.flags = new ArrayList<>();
-        this.parses = new ArrayList<>();
-        return this;
+        return config(Config.vod());
     }
 
     public VodConfig config(Config config) {
@@ -99,15 +89,9 @@ public class VodConfig {
     }
 
     public VodConfig clear() {
-        this.wall = null;
-        this.home = null;
-        this.parse = null;
-        this.ads.clear();
-        this.doh.clear();
-        this.rules.clear();
-        this.sites.clear();
-        this.flags.clear();
-        this.parses.clear();
+        home = null;
+        parse = null;
+        sites = null;
         BaseLoader.get().clear();
         return this;
     }
@@ -158,7 +142,6 @@ public class VodConfig {
 
     private void parseConfig(JsonObject object, Callback callback) {
         try {
-            clear();
             initSite(object);
             initParse(object);
             initOther(object);
diff --git a/app/src/main/java/com/fongmi/android/tv/api/config/WallConfig.java b/app/src/main/java/com/fongmi/android/tv/api/config/WallConfig.java
index 36cf49fa9..64b82f810 100644
--- a/app/src/main/java/com/fongmi/android/tv/api/config/WallConfig.java
+++ b/app/src/main/java/com/fongmi/android/tv/api/config/WallConfig.java
@@ -49,7 +49,7 @@ public class WallConfig {
     }
 
     public static void load(Config config, Callback callback) {
-        get().clear().config(config).load(callback);
+        get().config(config).load(callback);
     }
 
     public WallConfig init() {
@@ -63,11 +63,6 @@ public class WallConfig {
         return this;
     }
 
-    public WallConfig clear() {
-        this.config = null;
-        return this;
-    }
-
     private boolean isCanceled(Throwable e) {
         return e.getCause() instanceof InterruptedException || e.getCause() instanceof InterruptedIOException;
     }
diff --git a/app/src/main/java/com/fongmi/android/tv/service/PlaybackService.java b/app/src/main/java/com/fongmi/android/tv/service/PlaybackService.java
index c31ab8821..f64a7aca5 100644
--- a/app/src/main/java/com/fongmi/android/tv/service/PlaybackService.java
+++ b/app/src/main/java/com/fongmi/android/tv/service/PlaybackService.java
@@ -1,8 +1,10 @@
 package com.fongmi.android.tv.service;
 
 import android.annotation.SuppressLint;
+import android.app.ActivityManager;
 import android.app.Notification;
 import android.app.Service;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ServiceInfo;
 import android.graphics.Bitmap;
@@ -32,6 +34,7 @@ import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 import org.greenrobot.eventbus.ThreadMode;
 
+import java.util.List;
 import java.util.Objects;
 
 public class PlaybackService extends Service {
@@ -151,4 +154,12 @@ public class PlaybackService extends Service {
     public IBinder onBind(Intent intent) {
         return null;
     }
+
+    public static boolean isRunning() {
+        ActivityManager manager = (ActivityManager) App.get().getSystemService(Context.ACTIVITY_SERVICE);
+        List<ActivityManager.RunningServiceInfo> services = manager.getRunningServices(Integer.MAX_VALUE);
+        if (services == null || services.isEmpty()) return false;
+        String clz = PlaybackService.class.getName();
+        return services.stream().anyMatch(serviceInfo -> clz.equals(serviceInfo.service.getClassName()));
+    }
 }
diff --git a/app/src/mobile/java/com/fongmi/android/tv/ui/activity/HomeActivity.java b/app/src/mobile/java/com/fongmi/android/tv/ui/activity/HomeActivity.java
index fefdad8a8..b6a733eae 100644
--- a/app/src/mobile/java/com/fongmi/android/tv/ui/activity/HomeActivity.java
+++ b/app/src/mobile/java/com/fongmi/android/tv/ui/activity/HomeActivity.java
@@ -32,6 +32,7 @@ import com.fongmi.android.tv.player.Source;
 import com.fongmi.android.tv.player.exo.CacheManager;
 import com.fongmi.android.tv.receiver.ShortcutReceiver;
 import com.fongmi.android.tv.server.Server;
+import com.fongmi.android.tv.service.PlaybackService;
 import com.fongmi.android.tv.ui.base.BaseActivity;
 import com.fongmi.android.tv.ui.custom.FragmentStateManager;
 import com.fongmi.android.tv.ui.fragment.SettingFragment;
@@ -216,14 +217,14 @@ public class HomeActivity extends BaseActivity implements NavigationBarView.OnIt
         } else if (mManager.isVisible(1)) {
             mBinding.navigation.setSelectedItemId(R.id.vod);
         } else if (mManager.canBack(0)) {
-            super.onBackInvoked();
+            if (PlaybackService.isRunning()) moveTaskToBack(true);
+            else super.onBackInvoked();
         }
     }
 
     @Override
     protected void onDestroy() {
         CacheManager.get().release();
-        WallConfig.get().clear();
         LiveConfig.get().clear();
         VodConfig.get().clear();
         AppDatabase.backup();