How to send Android device to sleep or programmatically press the power button(KEYCODE_POWER) with Kotlin? Is it possible? Some example?
Thank you advance!
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In Android (regardless of whether you use Kotlin, Java, whatever) for security reasons it is not possible for an app to make the device sleep, unless your app is a system app provided by the phone manufacturer.
Alexei Martianov
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Maybe you still can. Rather old post here https://forum.xda-developers.com/showthread.php?t=1210421 says to use gotosleep function. There are discussions of problems with it for Java - see below links, but maybe for Kotlin it will work.
Android system application DEVICE_POWER permission error
Android What permissions required to call PowerManager.goToSleep(n) put device in sleep mode?
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maybe, but from links you provided looks that option is possible for API<21, that is for devices running Android 4 and below. – Alexei Martianov Sep 11 '19 at 10:54