问题
i tried to use the most of the correct answers suggested by the users to adjust the brightness of the iphone (ie [[UIScreen mainScreen]setBrightness:0.0];) but the simulator didn't change its brightness. Is iphone simulator's brightness adjustable?
回答1:
The iPhone simulator brightness is not adjustable, you have to try in a real device!
回答2:
The iPhone simulator is not a hardware simulator. It simulates some of the hardware functions but mostly it is a simulator for iOS. You will need to register a device and test to be able to confirm if your code works properly.
来源：https://stackoverflow.com/questions/10230796/is-iphone-simulators-brightness-adjustable