title: Launch home screen chooser
body: <p>I have defined my app as home screen but I have to change the home screen during my app execution. I know it is not possible to change the home screen, it is only possible to launch the home screen selector. How could I launch the home screen selector when I need to do it?</p>
  
  <p>I'm using: </p>
  
  <p>PackageManager pm = getPackageManager(); pm.clearPackagePreferredActivities("com.dm.prado"); </p>
  
  <p>I have two problems: </p>
  
  <p>The selector is only showed when I press home button, I want to show it when I want. </p>
  
  <p>The selector is never showed again when I Selecthome screen first time </p>