Update Display Brightness on Android after changing it programmatically

Question

I\'m trying to update the display brightness from a widget but i have some problems.

To change brightness level, i use:

Settings.System.putInt(contex         


        

Answer 1

Can you use this code in your RemoteView,

Settings.System.putInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, brightness);

// This makes the new screen brightness effective
WindowManager.LayoutParams layoutParams = ((Activity)context).getWindow().getAttributes();
float b = brightness/255.0f;
if(b == 0.0)    
    b = 0.01f;
layoutParams.screenBrightness = b;
((Activity)context).getWindow().setAttributes(layoutParams);

This code fine works when you are setting phone screen brightness from inside a User-defined class which is not extending an Activity but you only need the context.