Adding screen brightness controls to android application

Question

I am looking to add controls to adjust screen brightness locally in my app menu but can\'t seem to figure out how to do it. I have seen examples to max-out or dim brightness

Answer 1

You can change the user's brightness setting like this (make sure you declare permission for WRITE_SETTINGS in the manifest)

android.provider.Settings.System.putInt(getContentResolver(), 
                        android.provider.Settings.System.SCREEN_BRIGHTNESS, brightpref);

The documentation calls that setting from 0 to 255. I am trying to figure out whether it shuts the screen off at 0, as at one point I had a widget installed with a slider and you'd cause the screen to shut off if you set it to 0.