templates/activities/BlankActivity/root/res/layout/activity_simple.xml.ftl

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width=<#if buildApi lt 8 >"fill_parent"<#else>"match_parent"</#if>
    android:layout_height=<#if buildApi lt 8 >"fill_parent"<#else>"match_parent"</#if>
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".${activityClass}">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>