i love objective c for the way you read and write code like this. don't know why, just something nice about it. nice way to toggle screen brightness between max and the users setting. please reset me back to the user settings in viewWillDisappear or something similar.

gistfile1.m

-(void)toggleScreenBrightness{
    if (screenBrightness != -1) {
        [[UIScreen mainScreen] setBrightness:screenBrightness];
        screenBrightness = -1;
    } else {
        screenBrightness = [[UIScreen mainScreen] brightness];
        [[UIScreen mainScreen] setBrightness:1.0f];
    }
}