如何像 iOS 7 iPad App Store 一样同时翻转和放大 UIView? [英] How can I flip and enlarge a UIView it at the same time like iOS 7 iPad App Store?

问题描述

iPad iOS 7 App Store 有一个非常酷的动画，当您单击应用程序图标时(当图标较小时，从精选列表中，而不是搜索结果).这是它的图片:

The iPad iOS 7 App Store has a pretty cool animation for when you click on an app icon (from the featured list when the icon is smaller, not a search result). Here is a picture of it in action:

基本上，图标会同时翻转和扩大.

Basically, the icon flips and expands in size at the same time.

后面有渐变，内容视图更小.

There is a gradient behind it and the content view is smaller.

到目前为止，我有一个自定义的 VC 过渡设置，并且我的放大部分工作正常，但我无法让翻转.如何模仿 App Store 动画?

So far, I have a custom VC transition setup and I have the enlargement part working okay, but I can't get the flip to jive. How can I mimic the App store animation?

这是我目前的代码:

- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext {
UIView *inView = [transitionContext containerView];
UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIView *fromView = [fromVC view];
UIView *toView = [toVC view];
toView.frame = [transitionContext finalFrameForViewController:toVC];

// Take a snapshot of the new view being presented
UIGraphicsBeginImageContextWithOptions(toView.bounds.size, NO, 0);
CGContextRef ctx = UIGraphicsGetCurrentContext();
[fromView.layer renderInContext:ctx];
UIImage *snapshot = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

// Add the snapshot view and animate its appearance
UIImageView *intermediateView = [[UIImageView alloc] initWithImage:snapshot];
[inView addSubview:intermediateView];
[self calculateSourceRectInView:inView];
intermediateView.frame = self.sourceRect;

[UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
    intermediateView.layer.transform = CATransform3DMakeRotation(-1.0 * -M_PI_2, 0.0, 1.0, 0.0);
    intermediateView.frame = toView.frame;
} completion:^(BOOL finished) {
    [intermediateView removeFromSuperview];

    if ([transitionContext transitionWasCancelled]) {
        [transitionContext completeTransition:NO];
    } else {
        [inView addSubview:toView];
        [fromView removeFromSuperview];
        [transitionContext completeTransition:YES];

        // Now this is a pushed view, we allow interactive
        // transitioning back to the parent view.
        self.interactiveTransition = [EBInteractiveZoomTransition new];
        [self.interactiveTransition wireToViewController:toVC];
    }
}];
}

推荐答案

试试这个方法...

//set Intial Frame of view

[UIView transitionWithView: self.view
                  duration: 1.5f
                   options: UIViewAnimationOptionTransitionFlipFromRight
                animations: ^(void)
 {
 }
                completion: ^(BOOL isFinished)
 {
      // set the Final Frame of the View
 }];

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