title: How to show the screensaver on android?
body: <p>I already created a bouncing object as an application but I want to make it to be a screensaver.</p>
  
  <p>After 15 seconds inactivity device <strong>instead of sleep, the screen shows the screensaver</strong>(bouncing object) and quit to the previous screen when the screen is touched.</p>
  
  <p>For the touch action, I currently use onUserInteraction() and it works fine.</p>
  
  <p>I want the screen to show after the device has been in an inactivity period for a while.</p>
  
  <p>*not the DayDream one because DayDream works only when the phone is charged or docked</p>