How do I prevent an Android device from going to Sleep programmatically?

Using android:keepScreenOn=”true” is equivalent to using FLAG_KEEP_SCREEN_ON . You can use whichever approach is best for your app. The advantage of setting the flag programmatically in your activity is that it gives you the option of programmatically clearing the flag later and thereby allowing the screen to turn off.30 Ara 2021

Partial wake locks are a mechanism in the PowerManager API that lets developers keep the CPU running after a device’s display turns off (whether due to system timeout or the user pressing the power button). Your app acquires a partial wake lock by calling acquire() with the PARTIAL_WAKE_LOCK flag.

A wake lock is a mechanism to indicate that your application needs to have the device stay on . Any application using a WakeLock must request the android. permission. WAKE_LOCK permission in an <uses-permission> element of the application’s manifest. Obtain a wake lock by calling PowerManager#newWakeLock(int, String) .