LogoutSegue.m

#import "LogoutSegue.h"

@implementation LogoutSegue

- (void)perform
{
    UIViewController *destinationViewController = self.destinationViewController;
    
    UIWindow *window = [[[UIApplication sharedApplication] delegate] window];
    
    CGRect destinationViewFrame = destinationViewController.view.frame;
    destinationViewFrame = CGRectOffset(destinationViewFrame, 0.0f, CGRectGetHeight(destinationViewFrame));
    destinationViewController.view.frame = destinationViewFrame;
    
    [window addSubview:destinationViewController.view];
    
    [UIView animateWithDuration:0.5f delay:0.0f options:UIViewAnimationOptionCurveEaseOut animations:^{
        CGRect destinationViewFrame = destinationViewController.view.frame;
        destinationViewFrame = CGRectOffset(destinationViewFrame, 0.0f, -CGRectGetHeight(destinationViewFrame));
        destinationViewController.view.frame = destinationViewFrame;
    } completion:^(BOOL finished) {
        window.rootViewController = destinationViewController;
    }];
}

@end