1<?xml version="1.0" encoding="utf-8"?> 2<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="vertical" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent"> 6 7 <SurfaceView android:id="@+id/surface" 8 android:layout_width="wrap_content" 9 android:layout_height="wrap_content" 10 android:layout_gravity="center"> 11 </SurfaceView> 12 13</LinearLayout>