title: Using Android internal drawables
body: <p>I'm trying to write a tristate switch. But I'm failing to access the default <a href="http://developer.android.com/reference/android/R.styleable.html#Switch_track" rel="nofollow noreferrer">com.android.internal.R.styleable.Switch_track</a> drawable to use as background.</p>
  
  <p>How to get that drawable?</p>
  
  <p>Is there another approach for getting the default background?</p>