导航控制器中的后退按钮动画 [英] Back Button Animation in Navigation Controller

问题描述

CATransitions可用于在向下钻取时为导航控制器中的过渡设置动画。然而，当使用后退按钮og导航控制器（返回）动画仍然滑出。有谁知道如何将CATransition附加到导航控制器的后退按钮？谢谢。

CATransitions can be used to animate transitions in Navigation Controllers when drilling down. However when using Back button og Navigation Controller (going back up) animation is still slide out. Does anyone know how to attach CATransition to the Back button of Navigation Controller? thanks.

向下钻取时用于动画的代码：

Code used to animate when "drilling down":

CATransition *transition = [CATransition animation];
transition.duration = 1;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromTop;
transition.delegate = self;
[self.navigationController.view.layer addAnimation:transition forKey:nil];

推荐答案

无需创建自定义按钮..你可以简单地做这样的事情：

There is no need to create a custom button... You can simply do something like this:

- (void)viewWillDisappear:(BOOL)animated
{
    if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
        // back button was pressed.  We know this is true because self is no longer
        // in the navigation stack.  
        CATransition *transition = [CATransition animation];
        [transition setDuration:0.75];
        [transition setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
        [transition setType:@"oglFlip"];
        [transition setSubtype:kCATransitionFromLeft];
        [transition setDelegate:self];
        [self.navigationController.view.layer addAnimation:transition forKey:nil];
    }

    [super viewWillDisappear:animated];
}

编辑：你必须先添加石英框架才能使用CATransition

you must add the quartz framework first in order to use CATransition

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