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- (void) fadeOut: (id) sender { CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:1.0]; [[self.view viewWithTag:999] setAlpha:0.0f]; [UIView commitAnimations]; self.navigationItem.rightBarButtonItem = BARBUTTON(@”Fade In”,@selector(fadeIn:)); } - (void) fadeIn: (id) sender { CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:1.0]; [[self.view viewWithTag:999] setAlpha:1.0f]; [UIView commitAnimations]; self.navigationItem.rightBarButtonItem = BARBUTTON(@”Fade Out”,@selector(fadeOut:)); } - (void) viewDidLoad { self.navigationItem.rightBarButtonItem = BARBUTTON(@”Fade Out”,@selector(fadeOut:)); } @end