gistfile1.m

- (IBAction)showHideView:(id)sender
{
    // Fade out the view right away
    [UIView animateWithDuration:1.0
        delay: 0.0
        options: UIViewAnimationOptionCurveEaseIn
        animations:^{
             thirdView.alpha = 0.0;
        }
        completion:^(BOOL finished){
            // Wait one second and then fade in the view
            [UIView animateWithDuration:1.0
                 delay: 1.0
                 options:UIViewAnimationOptionCurveEaseOut
                 animations:^{
                    thirdView.alpha = 1.0;
                 }
                 completion:nil];
        }];
}