问题使用CATransitions切换视图

Question

所以我尝试使用此代码视图之间切换：

CATransition *applicationLoadViewIn = [CATransition animation]; 

    [applicationLoadViewIn setDuration:1]; 

    [applicationLoadViewIn setType:kCATransitionReveal]; 

    [applicationLoadViewIn setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]]; 

    MyViewControllerClass *theControllerIAmSwitchingTo = [[MyViewControllerClass alloc] init]; 

    [[theControllerIAmSwitchingTo.view layer] addAnimation:applicationLoadViewIn forKey:kCATransitionReveal]; 

但是，该代码不起作用。没有错误，并且代码执行得很好，但它没有做任何事情。我在这里有什么错误？

Answer 1

您需要将动画添加到父视图层，然后将该视图添加为父视图的子视图。

所以不是

[[theControllerIAmSwitchingTo.view layer] addAnimation:applicationLoadViewIn forKey:kCATransitionReveal]; 

您需要使用

[parentView.layer addAnimation:animation forKey:kCATransitionReveal]; 
[parentView addSubview:theControllerIAmSwitchingTo.view]; 

Answer 2

只是不喜欢它：

CATransition *applicationLoadViewIn = [CATransition animation]; 

    [applicationLoadViewIn setDuration:1]; 

    [applicationLoadViewIn setType:kCATransitionReveal]; 

    [applicationLoadViewIn setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]]; 

    MyViewControllerClass *theControllerIAmSwitchingTo = [[MyViewControllerClass alloc] init]; 

    [[theControllerIAmSwitchingTo.view layer] addAnimation:applicationLoadViewIn forKey:kCATransitionReveal]; 

    [self.navigationController pushViewController:theControllerIAmSwitchingTo animated:NO]; 

我注意到的问题是，您不添加您的视图您的导航堆栈，这就是为什么你的视图不会被加载，你看不到动画。