Segue with Push animation Right to Left

问题

I am using this method:

[UIView transitionWithView: duration: options: animations: completion:];

to control a back animation on a segue. Precisely using this code:

[UIView transitionWithView:self.view.superview
                  duration:2.0
                   options:UIViewAnimationOptionTransitionFlipFromRight
                animations:^{
                    [self dismissModalViewControllerAnimated:NO];
                }
                completion:nil];

That works, but what I really want is not a Flip, it is a Push. In other words I want to see the views sliding from right to left, one replacing the other.

Unfortunately there is no UIViewAnimationOptionTransitionPushFromRight.

Therefore my question: how can I get the effect I want?

回答1:

If you are using a navigationController, you can do something like this:

- (void)perform
{
    UIViewController *source = (UIViewController*)[self sourceViewController];
    UIViewController *destination = (UIViewController*)[self destinationViewController];

    CATransition* transition = [CATransition animation];
    transition.duration = .25;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = kCATransitionPush;
    transition.subtype = kCATransitionFromLeft;

    [source.navigationController.view.layer addAnimation:transition
                                                  forKey:kCATransition];

    [source.navigationController pushViewController:destination animated:NO];
}

If you don't want to use a UINavigationController, and you want the source view controller to go away as opposed to using presentViewController, and you don't want the fade out animation caused by using kCATransitionPush, then the following solution will work. This also works if your views are transparent and you do not want the containing background to animate.

static UIImageView *screenShotOfView(UIView *view)
{
    // Create a snapshot for animation
    UIGraphicsBeginImageContextWithOptions(view.bounds.size, NO, 0.0);
    CGContextRef context = UIGraphicsGetCurrentContext();
    [view.layer renderInContext:context];
    UIImageView *screenShot = [[UIImageView alloc] initWithImage:UIGraphicsGetImageFromCurrentImageContext()];
    UIGraphicsEndImageContext();
    return screenShot;
}

- (void)perform
{
    UIViewController *source = (UIViewController *) self.sourceViewController;
    UIViewController *destination = (UIViewController *) self.destinationViewController;

    // Swap the snapshot out for the source view controller
    UIWindow *window = source.view.window;
    UIImageView *screenShot = screenShotOfView(source.view);
    CGRect originalFrame = destination.view.frame;

    BOOL animsEnabled = [UIView areAnimationsEnabled];
    [UIView setAnimationsEnabled:NO];
    {
        window.rootViewController = destination;
        [window addSubview:screenShot];
        [source.view removeFromSuperview];
        CGRect frame = destination.view.frame;
        frame.origin.x += source.view.bounds.size.width;
        destination.view.frame = frame;
    }
    [UIView setAnimationsEnabled:animsEnabled];

    [UIView animateWithDuration:kAnimationDuration
                     animations:^{
                         destination.view.frame = originalFrame;
                         CGRect frame = screenShot.frame;
                         frame.origin.x -= screenShot.bounds.size.width;
                         screenShot.frame = frame;

                     }
                     completion:^(BOOL finished) {
                         [screenShot removeFromSuperview];
                     }];   
}

来源：https://stackoverflow.com/questions/16096864/segue-with-push-animation-right-to-left