mycustomunwindsegue.m

#import "MyCustomUnwindSegue.h"

@implementation MyCustomUnwindSegue

- (void)perform
{
    UIView *sourceView = ((UIViewController *)self.sourceViewController).view;
    UIView *destinationView = ((UIViewController *)self.destinationViewController).view;
    
    
    
    UIWindow *window = [[[UIApplication sharedApplication] delegate] window];
    destinationView.center = CGPointMake(sourceView.center.x,  sourceView.center.y + destinationView.center.y);
    [window insertSubview:destinationView belowSubview:sourceView];
    
    [UIView animateWithDuration:0.4
                     animations:^{
                         
                         
                         destinationView.center = CGPointMake(sourceView.center.x, sourceView.center.y);
                         sourceView.center = CGPointMake(sourceView.center.x, 0 - 2*destinationView.center.y);
                     }
                     completion:^(BOOL finished){
                         
                         [[self destinationViewController] dismissViewControllerAnimated:NO completion:nil];
                     }];
    
    
    
}


@end