Programmatically changing screen brightness on Android

ScreenBrightness.java

boolean ScreenBrightness(int level, Context context) {

    	try {
			android.provider.Settings.System.putInt(
					context.getContentResolver(),
					android.provider.Settings.System.SCREEN_BRIGHTNESS, level);
			
			
			android.provider.Settings.System.putInt(context.getContentResolver(),
					android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE, 
					android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
			
			android.provider.Settings.System.putInt(
					context.getContentResolver(),
					android.provider.Settings.System.SCREEN_BRIGHTNESS, 
					level);
					
			
			return true;
		}

		catch (Exception e) {
			Log.e("Screen Brightness", "error changing screen brightness");
			return false;
		}
	}