防止UINavigationBar popViewController动画 [英] Prevent UINavigationBar popViewController animation

问题描述

我有以下问题：我已覆盖 popViewControllerAnimated：（BOOL）动画 of UINavigationController 因为我想有一个自定义动画。代码如下：

I have the following problem: I have overridden popViewControllerAnimated:(BOOL)animated of UINavigationController because I would like to have a custom animation. The code is as follows:

- (UIViewController *)popViewControllerAnimated:(BOOL)animated 
{
    UIViewController *poppedCtrl = [super popViewControllerAnimated:NO];
    [((customViewController *) self.topViewController) doCustomAnimation];
    return poppedCtrl;
}

不幸的是 UINavigationBar 似乎忽略了我明确禁用内置动画并且它仍然是动画的。

Unfortunately the UINavigationBar seems to ignore that I explicitly disable the built in animation and it is still animated.

我还需要做些什么才能阻止导航栏的动画？

What do I have to do to also prevent the animation of the navigation bar?

推荐答案

经过一些阅读和一些实验后，我终于找到了为实现理想行为需要做些什么。

After some reading and also some experimentation I finally found out what needs to be done to achieve the desired behavior.

为了防止导航栏被动画，仅覆盖（UIViewController *）popViewControllerAnimated：（BOOL）动画。

To prevent the navigation bar from being animated it is not sufficient to override (UIViewController *)popViewControllerAnimated:(BOOL)animated.

还需要创建自定义导航栏并覆盖（UINavigationItem *）popNavigationItemAnimated：（BOOL）动画 ：

It is also necessary to create a custom navigation bar and override (UINavigationItem *)popNavigationItemAnimated:(BOOL)animated:

- (UINavigationItem *)popNavigationItemAnimated:(BOOL)animated {
    return [super popNavigationItemAnimated:NO];
}

当然这个自定义导航栏也必须是使用的导航栏（I刚刚更换了导航控制器在界面构建器中使用的导航栏。

Of course this custom navigation bar must also be the one which is used (I just replaced the navigation bar which is used by my navigation controller in the interface builder).

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