Android Studio: text

   <TextView
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="Hello World!"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintLeft_toLeftOf="parent"
       app:layout_constraintRight_toRightOf="parent"
       app:layout_constraintTop_toTopOf="parent" />

   <VideoView
       android:id="@+id/vdVw"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:layout_gravity="center" />