title: Dropping event due to window no focus
body: <p>I am getting this <code>warning</code> but not able to catch reason ?</p>
  
  <pre><code>Dropping event due to no window focus: 
  KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_BACK, scanCode=158, metaState=0,
  flags=0x8, repeatCount=0, eventTime=1057872, downTime=1057872, deviceId=4,
  displayId=0, source=0x101 }
  </code></pre>
  
  <p>Can anybody explain, What's the reason for this Warning?</p>