Clean code

app/src/main/AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     package="com.fongmi.android.tv"
-    tools:ignore="ImpliedTouchscreenHardware,MissingLeanbackLauncher,MissingLeanbackSupport,LeanbackUsesWifi,ScopedStorage">
+    tools:ignore="ScopedStorage">
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
@@ -30,6 +30,7 @@
         android:name=".App"
         android:allowBackup="false"
         android:appCategory="video"
+        android:enableOnBackInvokedCallback="true"
         android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"