xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimary"
tools:context=".VideoViewActivity">
<com.google.android.youtube.player.YouTubePlayerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="visible"
android:layout_centerHorizontal="true"
android:id="@+id/youtube_player"
android:layout_alignParentTop="true" />
<Button
android:text="ভিডিও শুরু করুন"
android:textColor="#46FAA0"
android:textSize="30sp"
android:layout_width="250dp"
android:layout_height="50dp"
android:background="@drawable/buttonshape3"
android:shadowColor="#000302"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="5"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="195dp"
android:visibility="visible"
android:id="@+id/button3" />
</RelativeLayout>