title: How to create a state-specific drawable xml for a toggle RadioButton
body: <p>When creating button drawables, I typically follow the following format to implement an "onClick" change of background:</p>
  
  <pre><code>&lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt; 
      &lt;item android:state_focused="true" android:state_pressed="true" 
          android:drawable="@drawable/RESOURCE_FOR_CLICKED" /&gt; 
      &lt;item android:state_focused="false" android:state_pressed="true" 
          android:drawable="@drawable/RESOURCE_FOR_CLICKED" /&gt; 
      &lt;item android:drawable="@drawable/RESOURCE_NORMAL" /&gt; 
  &lt;/selector&gt;
  </code></pre>
  
  <p>This works fine for me when I am creating traditional buttons as I want them to return to their original state once <code>onClick</code> is finished, and I don't have to implement any code.</p>
  
  <p>However, this does not work for <code>RadioButton</code>s because I actually want their background drawable to be different in the non-pressed state once they have selected.</p>
  
  <p>Are there XML attributes for states involving radio buttons that I should be aware of to implement this sort of thing? If not, do I have to manage the changing of backgrounds in code?</p>