Screen on/off detection

Question

here i am trying to determine whether the screen is on or not but it doesn\'t seems to be working when press power lock/unlock button. Application works with no error but the co

Answer 1

Intent.ACTION_SCREEN_OFF and ACTION_SCREEN_ON check out for above broadcasts registration. here you can find a good example.

Answer 2

Register your BroadcastReceiver in a backgroung Service for Intent.ACTION_SCREEN_ON and Intent.ACTION_SCREEN_OFF events. It worked for me.

Answer 3

You can try adding this inside your activity.

IntentFilter filter = new IntentFilter(); 
filter.addAction(Intent.ACTION_SCREEN_OFF); 
BroadcastReceiver mReceiver = new ScreenReceiver(); 
registerReceiver(mReceiver, filter); 

Similarly you can add for ACTION_SCREEN_ON also

Answer 4

The approach with the ACTION_SCREEN did not work for me. After some different solutions this code finally solved the problem for me:

/**
 * Is the screen of the device on.
 * @param context the context
 * @return true when (at least one) screen is on
 */
public boolean isScreenOn(Context context) {
    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
        DisplayManager dm = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE);
        boolean screenOn = false;
        for (Display display : dm.getDisplays()) {
            if (display.getState() != Display.STATE_OFF) {
                screenOn = true;
            }
        }
        return screenOn;
    } else {
        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        //noinspection deprecation
        return pm.isScreenOn();
    }
}