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 xmlns:tools="http://schemas.android.com/tools" 7 xmlns:app="http://schemas.android.com/apk/res-auto" 8 tools:context=".MainActivity"> 9 10 <TextView 11 android:layout_width="wrap_content" 12 android:layout_height="wrap_content" 13 android:text="@string/sample_text" 14 /> 15 16 <Button 17 android:id="@+id/testButton1" 18 android:layout_width="wrap_content" 19 android:layout_height="wrap_content" 20 android:text="@string/test_button_label" 21 android:layout_centerInParent="true" 22 android:gravity="end|center_vertical" 23 /> 24</LinearLayout> 25