Can't keep Screen brightness setting in android 5.0++ -


i use code reduce screen brightness work in android 4.4--. when test in android 5++ work when activity open, after finish/close activity screen brightness return default setting before. how can keep screen brightness setting in android 5.0++

    cresolver = getcontentresolver();     window = getwindow();     android.provider.settings.system.putint(cresolver,             android.provider.settings.system.screen_brightness,75);     windowmanager.layoutparams layoutpars = window.getattributes();     layoutpars.screenbrightness = 75 / (float) 255;     window.setattributes(layoutpars); 

is adaptive brightness enabled on device? mean brightness level falls within user-defined range, rather using single value provide. try disabling before running code posted, , see if makes difference.

settings.system.putint(getcontentresolver(), screen_brightness_mode, screen_brightness_mode_manual) 

also, see this question changing value when adaptive mode enabled.


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