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I made a application to lock the screen. I write a code to lock the screen in a onCreate() method of activity,
Here the screen is locked correctly, but as I run application it locks the screen, now when I unlock it, it again shows the activity and then again lock the screen, so I can not do anything no what should I do.
WindowManager.LayoutParams params = getWindow().getAttributes();
params.screenBrightness = 0;
getWindow().setAttributes(params);
I dont think ur application is actually locking the screen. Its just turnig it OFF. When u try to unlock the screen, the screen is turning ON( due to user interaction ). As ur application is still running its forcing the sceern to turn OFF again. Just a wild guess, sorry if i mk completely wrong!!