How to start an Activity on device even if screen is locked. I tried as below but it's not working.
Broadcast receiver:
Intent alarmIntent = new Intent("android.intent.action.MAIN");
alarmIntent.setClass(context, Alarm.class);
alarmIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
alarmIntent.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED +
WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD +
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON +
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
context.startActivity(alarmIntent);
You can achieve this in two ways:
using wake lock as explained by @Yup in this post.
using window flags.
Using window flags:
Open the Activity A which you want to start in 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're not pasting it before setContentView(...)
:-)