自定义segue需要继承 UIStoryboardSegue类，然后重写-(void)perform;方法.在方法中可以自定义转场动画。

</pre><span style="color: rgb(97, 34, 174); font-family: Courier; font-size: 18px;">CoolSegue.h文件</span><p></p><p></p><pre code_snippet_id="420043" snippet_file_name="blog_20140707_2_5708153" name="code" class="objc">#import <UIKit/UIKit.h>

@interface CoolSegue : UIStoryboardSegue

@end

CoolSegue.m文件

#import "CoolSegue.h"

@implementation CoolSegue



-(void)perform
{

    UIViewController* source = self.sourceViewController;

    UIViewController* destination = self.destinationViewController;

    UIGraphicsBeginImageContext(destination.view.bounds.size);
    CGContextRef contextRef = UIGraphicsGetCurrentContext();
    [destination.view.layer renderInContext:contextRef];
    UIImage* desImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    UIImageView* iView = [[UIImageView alloc] initWithImage:desImage];
    [iView setBackgroundColor:[UIColor grayColor]];
    iView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
    iView.contentMode = UIViewContentModeCenter;

    [source.parentViewController.view addSubview:iView];

    CGAffineTransform scaleT = CGAffineTransformMakeScale(0.1, 0.1);

    CGAffineTransform rotateT = CGAffineTransformMakeRotation(M_PI);

    //iView.transform = CGAffineTransformConcat(scaleT, rotateT);
    iView.transform =CGAffineTransformTranslate(CGAffineTransformConcat(scaleT, rotateT), 1, 1);
    CGPoint originPoint =  iView.center;
    iView.center = CGPointMake(iView.bounds.size.width, iView.bounds.size.height);

    //iView.center = CGPointMake(originPoint.x -iView.bounds.size.width, originPoint.y);
    [UIView animateKeyframesWithDuration:0.8 delay:0 options:UIViewKeyframeAnimationOptionCalculationModeCubic animations:^{
        iView.transform = CGAffineTransformIdentity;
        iView.center = originPoint;

    }completion:^(BOOL finished) {


        [self.sourceViewController presentViewController:self.destinationViewController animated:YES completion:nil];
         [iView removeFromSuperview];
    }];
}