title: Height of status bar in Android
body: <p>What's the height of the status bar in Android? Is it always the same?</p>
  
  <p>From my measurements it seems that it's 25dp, but I'm not sure if it has the same height on all platforms.</p>
  
  <p>(I want to know this to properly implement a fade transition from an activity that doesn't have status bar to one that does)</p>