how to unlock the screen when BroadcastReceiver is called?

Question

As you can guess, i register an alarm by AlarmManager. And the BroadcastReceiver will be called correctly. But when it called, my phone screen is still locked. I notice the

Answer 1

Open the Activity A which you want to start from onReceive(....). Paste this in onCreate() of that Activity A

     final Window win= getWindow();
    win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | 
              WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
    win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
               WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

Make sure you are not pasting it before setContentView(....) :)