1<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
2    xmlns:tools="http://schemas.android.com/tools"
3    android:layout_width="match_parent"
4    android:layout_height="match_parent"
5    android:paddingBottom="@dimen/activity_vertical_margin"
6    android:paddingLeft="@dimen/activity_horizontal_margin"
7    android:paddingRight="@dimen/activity_horizontal_margin"
8    android:paddingTop="@dimen/activity_vertical_margin"
9    tools:context=".MainActivity" >
10
11    <TextView
12        android:layout_width="wrap_content"
13        android:layout_height="wrap_content"
14        android:text="@string/hello_world" />
15
16</RelativeLayout>
17