title: Flashing Screen in Android
body: <p>I made a android project, now my project has a need to set up a alarm type, like blinking screen for which user can see that screen is blinking,</p>
  
  <p>Flashing screen means, screen back light is turn off/on regularly.</p>
  
  <p>Like we make a thread and after every 500 milliseconds we toggle the screen light.</p>
  
  <p>How i do this... </p>