Disabled Keyguard Lock and turn screen on and keep it on, in Android programming

Question

i wrote an android alarm program. it work properly in many devices but in some device when the screen in on the alarm activity open and alarm work properly, but in some device it is not work when the screen is off. please help me in write code for disable keyguard lock and then keep the screen on until the user click on one button. thanks for your help...

Answer 1

in your AndroidManifest give the following permission :

<uses-permission android:name="android.permission.WAKE_LOCK" />

and in java file :

PowerManager powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
WakeLock wakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Lock");
wakeLock.acquire();

release this lock when application is paused or destroyed or on button click:

wakeLock.release();

hope it helps.

few links :

completely-disable-keyguard

disable-keyguard-and-display-an-activity-to-the-user

disabled-keyguard-lock-re-enables-itself-after-clicking-on-a-notification