Settings.System.putInt(getContentResolver(),Settings.System.SCREEN_BRIGHTNESS_MODE,Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
int i = Integer.parseInt(tag[1]);
BackLightValue = (float)i/255;
   if(BackLightValue==0.0){
   BackLightValue=0.1f;
   }
       SysBackLightValue = (int)(BackLightValue*255);
       Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, SysBackLightValue);
       WindowManager.LayoutParams LightValue=getWindow().getAttributes();
       LightValue.screenBrightness = BackLightValue;
getWindow().setAttributes(LightValue);



이렇게하면
화면밝기 설정값은 바뀌는데 
적용이안되더라구요 ....
방법이 있을까요 ??
이 게시물을