title: For Android 4.2: How to enable lock screen widget for application programmatically
body: <p>As there is an exciting feature in Android 4.2 to place app widget on Lock-Screen.
  I have implemented it for my app, but I have to choose my widget to enable it on
  lock screen.</p>
  
  <p>But I want to enable and disable widget from my app. That is, if user click on 
  check-box then automatically widget for that app should enable on lock-screen and
  is user un-check then automatically widget will disable from lock-screen.</p>
  
  <p>please help me.</p>