Question

I have created two custom segue files and in both, I have overrode the perform method. However, it seems that the custom segue only works when presenting the new UIViewController, and the reverse one, does not animate just dismisses the source UIViewController.

Reverse custom segue:

- (void)perform {
UIViewController *sourceViewController = self.sourceViewController;
    UIViewController *sourceTabBarController = sourceViewController.parentViewController.parentViewController;
    UIViewController *destinationViewController = self.destinationViewController;
    UIGraphicsBeginImageContext(destinationViewController.view.bounds.size);
        [destinationViewController.view.layer renderInContext:UIGraphicsGetCurrentContext()];
        UIImage *destinationViewControllerImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

    UIImageView *destinationViewControllerImageView = [[UIImageView alloc] initWithImage:destinationViewControllerImage];
    destinationViewControllerImageView.userInteractionEnabled = YES;
    destinationViewControllerImageView.frame = CGRectMake(0.0f, 0.0f, CGRectGetWidth(destinationViewController.view.frame), CGRectGetHeight(destinationViewController.view.frame));

[destinationViewController.view insertSubview:destinationViewControllerImageView atIndex:1];

// Add animations
    [UIView animateWithDuration:0.4f
                          delay:0.0f
                        options:UIViewAnimationOptionCurveEaseIn
                     animations:^{
                         destinationViewControllerImageView.center = CGPointMake(-CGRectGetWidth(destinationViewControllerImageView.frame) / 2, -(CGRectGetHeight(destinationViewControllerImageView.frame) / 2));
                     }
                     completion:nil];

    [sourceViewController dismissViewControllerAnimated:NO completion:nil];
}

Thanks in advance!

Answer 1

Segues add a new version of a view controller. When I was starting out I had some interesting problems with using segues to dismiss view controllers.

Instead of writing a custom segue, you should use a custom animation block in the view controller you are “dismissing to”.