IOS5 setBrightness didn't work with applicationWillResignActive

Question

I use [[UIScreen mainScreen]setBrightness: ] (in sdk 5.0) to change the system background light in my app.

The following steps work with my app

Answer 1

Try this...

- (void)applicationWillResignActive:(UIApplication *)application
{        
    CGFloat brightness = [[NSUserDefaults standardUserDefaults] floatForKey:@"sysBright"];
    [[UIScreen mainScreen] setBrightness:brightness];        
}