如何将popToRootViewControllerAnimated与我的标签集成？ [英] How do I integrate popToRootViewControllerAnimated with my tabs?

问题描述

我正在尝试使用popToRootViewControllerAnimated使我的一个标签按钮转到根目录。我的问题是：我在哪里放这个代码才能工作？我通过Interface Builder创建了标签...是否必须对其进行硬编码以使其正常工作？

I am trying to make one of my tab buttons go to the root using popToRootViewControllerAnimated. My question is: where do I put this code for it to work? I have my tabs created through Interface Builder... do they have to be hard coded for this to work?

以下是我要使用的代码：

Here is the code that I'm looking to use:

[self.navigationController popToRootViewControllerAnimated:YES];

AppDelegate中的新代码：

New code in AppDelegate:

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController {
    if (viewController = HomeViewController) {
        [HomeViewController popToRootViewControllerAnimated:NO];
    }
}

推荐答案

亚当 - 我最终放弃了子类的想法，即使它有效，因为有一个更简单的方法。

Adam - I ended up ditching the subclass idea even though it worked, as there is a much easier method.

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController {
    if ([viewController isKindOfClass:[UINavigationController class]]) {
        [(UINavigationController*)viewController popToRootViewControllerAnimated:YES];
    }
}

这是所需的代码。我已经上传了这个示例项目。要点是

This is the code required. I've uploaded this sample project to play around with. The main points are

• UITabBarController委托必须将
  设置为App Delegate。


• App
  代表必须实现< UITabBarControllerDelegate> 协议。


• App Delegate必须
  实现上面的代码。

• the UITabBarController delegate must be set to the App Delegate.
• the App Delegate must implement the <UITabBarControllerDelegate> protocol.
• the App Delegate must implement the code above.

示例项目还显示了一种选择性地选择使用哪种导航控制器的方法。

The sample project also shows one way to selectively choose which navigation controllers this occurs with.

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