1<?xml version="1.0" encoding="utf-8"?> 2<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:paddingLeft="16dp" 6 android:paddingRight="16dp" 7 android:orientation="vertical" 8 android:gravity="center"> 9 10 <Button 11 android:layout_width="match_parent" 12 android:layout_height="match_parent"/> 13 <Button 14 android:layout_width="match_parent" 15 android:layout_height="match_parent"/> 16 17 </LinearLayout> 18