如何将核心动画块内的一段代码排除在动画之外?

How can I exclude a piece of code inside a core animation block from being animated?(如何将核心动画块内的一段代码排除在动画之外?)

问题描述

我有一个核心动画块，我在其中调用将加载视图控制器的方法.两个视图控制器之间发生了自定义转换.然而，当视图控制器构建界面时，所有这些东西都会受到核心动画的影响.虽然它会产生一些有趣的效果，但我不希望这样;)

I have an core animation block where I call a method that will load a view controller. there is an custom transition between two view controllers happening. However, when the view controller builds up the interface, all this stuff is affected by core animation. Although it results in some interesting effects, I don't want that ;)

[UIView beginAnimations:@"jump to view controller" context:self];
[UIView setAnimationDuration:0.55];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

// some animated property-changes here...

[self loadViewControllerForIndex:targetIndex]; // everything that happens in this method shall not be animated

UIViewController *controller = [viewControllers objectAtIndex:targetIndex];
[controller viewWillAppear:YES];
[controller viewDidAppear:YES];

[UIView commitAnimations];

很遗憾，我无法将那部分移出街区.

Unfortunately I can't move that part out of the block.

推荐答案

您应该能够通过将 UIView 动画块的一部分包装在 CATransaction 中并为其禁用动画来抑制动画:

You should be able to suppress animations for a section of the UIView animation block by wrapping that section in a CATransaction and disabling animations for it:

[CATransaction begin];
[CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];    

// Changes to disable animation for here
[CATransaction commit];

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