UABAndroidExamples/MultimediaVideoView/res/layout/activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >

    <VideoView
        android:id="@+id/videoView1"
        android:layout_width="480dp"
        android:layout_height="640dp"
        android:layout_centerInParent="true"
        android:gravity="center" />

</RelativeLayout>