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If you need to keep a device running in order to complete some work before the
device goes into the suspend state, you can use a PowerManager system
service feature called wake locks. Wake locks allow your app to control the
power state of the device.
Set a wake lock
To use a wake lock, the first step is to add the
WAKE_LOCK permission to
your application's manifest file:
To release the wake lock, call wakelock.release(). Doing so releases your
claim to the CPU. It's important to release a wake lock as soon as your app is
finished using it to avoid draining the battery.
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2024-09-06 UTC.
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