title: Explanation of state_activated, state_selected, state_pressed, state_focused for ListView
body: <p>Can anyone explain (or point me to a link that explains) the difference between state_activated, state_selected, state_pressed, and state_focused for ListView items? Are they all valid states for ListViews? Does it matter if touch or a keyboard are being used? <a href="http://developer.android.com/resources/articles/touch-mode.html">This link</a> no longer seems to be valid.</p>
  
  <p>Many thanks!</p>