moving_water_activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="match_parent">
   
   <com.google.android.exoplayer2.ui.SimpleExoPlayerView
       android:id="@+id/player_view"
       android:layout_width="match_parent"
       android:layout_height="match_parent">
   </com.google.android.exoplayer2.ui.SimpleExoPlayerView>
   
</FrameLayout>