How to do it...

1. Open the res/layout/activity_main.xml file and change it as follows:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Centered"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Below Left"
        android:layout_below="@+id/textView1"
        android:layout_toLeftOf="@id/textView1" />
    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Bottom Right"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true" />
</RelativeLayout>

2. Run the code, or view the layout in the Design tab