How to detect whether the phone is in sleep mode in the code?

Question

Is there any way to detect whether an android phone is in sleep mode (screen is black) in the code? I wrote a home screen widget. I don't want the widget gets updated when the screen is black to save the battery consumption.

Thanks.

Answer 1

You could use the AlarmManager to trigger the refreshes of your widget. When scheduling your next cycle you can define whether to wake up your device (aka perform the actual task).

alarmManager.set(wakeUpType, triggerAtTime, pendingIntent);