iphone - 导航 Controller 中的后退按钮动画

Question

CATransitions 可用于在向下钻取时为导航 Controller 中的过渡设置动画。但是，当使用后退按钮和导航 Controller (返回)时，动画仍然滑出。有谁知道如何将 CATransition 附加到导航 Controller 的后退按钮？谢谢。

用于“向下钻取”时设置动画的代码:

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];

Answer 1

无需创建自定义按钮...您可以简单地执行以下操作:

- (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:您必须先添加quartz框架才能使用CATransition