When an Android-powered device is left idle, it will first dim, then turn off the
screen, and ultimately turn off the CPU. This prevents the device\'s battery
from quickly getting drained. Yet there are times when your application might
require a different behavior:
- Apps such as games or movie apps may need to keep the screen turned on.
- Other applications may not need the screen to remain on, but they may
require the CPU to keep running until a critical operation finishes.
These lessons describe how to keep a device awake when necessary without
draining its battery.
Lessons
- Keep the device awake
- Learn how to keep the screen or CPU awake as needed, while minimizing the
impact on battery life.
- Schedule alarms
- Learn how to use repeating alarms to schedule operations that take place
outside of the lifetime of the application, even if the application is not
running or the device is asleep.