self.tabBarController dismissViewControllerAnimated不起作用 [英] self.tabBarController dismissViewControllerAnimated doesn't work

问题描述

我的应用程序中有一个UITabBarController。

I have a UITabBarController in my application.

我想从一个标签中呈现另一个UIViewController。

I would like to present from one tab, another UIViewController.

所以我写了 ViewControllerA （这是tabviewcontroller中的一个标签）：

So I wrote in ViewControllerA (which is a tab in the tabviewcontroller):

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
MyViewController *chooseTemplateController = [storyboard instantiateViewControllerWithIdentifier:@"myController"];
[self.tabBarController presentViewController:myController animated:NO completion:nil];

这很好地显示了MyViewController。

This shows MyViewController nicely.

但是，我该怎么解雇MyViewController？

However, how can I dismiss MyViewController?

我读了很多我需要打电话的问题：

I read in many questions that I need to call:

[self.tabBarController dismissViewControllerAnimated:NO completion:nil];

但是 - 我从哪里调用它？我尝试从MyViewController - 但由于它不是UITabBar的一部分，self.tabBarController为null。

However - where do I call it from? I tried from MyViewController - but since it's not part of the UITabBar, self.tabBarController is null.

我从故事板而不是appDelegate初始化UiTabBarController我想保持这种状态。

I initialize the UiTabBarController from storyboard and not from appDelegate and I would like to leave it that way.

推荐答案

使用提供的viewController的 presentsViewController property

Use the presented viewController's presentingViewController property

[self.presentingViewController  dismissViewControllerAnimated:NO completion:nil];

Swift

Swift

presentingViewController?.dismissViewControllerAnimated(false, completion: nil)

你也可以使用这个速记版本（我不建议你这样做，但你会经常看到它）

You can also use this shorthand version (I don't recommend you do, but you will see it often)

[self dismissViewControllerAnimated:NO completion:nil];

Swift

Swift

dismissViewControllerAnimated(false, completion: nil)

参见< br>
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