applicationWillResignActive and setBrightness not working?

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:

1. Act

Answer 1

Have you tried registering your main view controller (or whatever object as to that) for the UIApplicationWillResignActiveNotification which is sent after executing applicationWillResignActive?

This will give you a chance to modify the brightness outside of applicationWillResignActive. Don't know if this method makes any difference, but trying it should be easy.

Simply call:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appWillResign) name:UIApplicationWillResignActiveNotification object:nil];

then define:

- (void)appWillResign {
    [[NSUserDefaults standardUserDefaults] floatForKey:@"sysBright"];
    [[UIScreen mainScreen] setBrightness:sysBright];        
}