<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
    <RadioButton android:text="RadioButton" android:id="@+id/radioButton1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content"></RadioButton>
</LinearLayout>
