从主视图控制器知道所呈现的模态视图控制器何时被关闭？

发布于 2025-01-04 20:33:02 字数 168 浏览 0 评论 0原文

我想知道是否可以从视图控制器知道其呈现的模式视图控制器何时被解除？（即当它的视图返回时？）

我尝试过：

viewWillAppear
viewDidAppear

但是，这些似乎不起作用:(

任何人都可以提出建议吗？谢谢。

原文

I wanted to know if its possible to know from the view controller when its presented modal view controller is dismissed ? (i.e. when its view returns?)

I tried:

viewWillAppear
viewDidAppear

But, these didnt seem to work :(

Can anyone kindly suggest ? Thanks.

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月依秋水 2025-01-11 20:33:02

这是一个回调解决方案，它对模态和父级进行较少的修改：

在模型的 .h 添加：

@property (nonatomic, copy) void (^dismissed)();

在模型的 .m 中，当您关闭模态时，将其放入完成中：

[self dismissViewControllerAnimated:YES completion:^{
    if(self.dismissed)
        self.dismissed();
}];

在父视图控制器中，当您实例化模态时，设置关闭打回来：

Modal = //Init your modal
[Modal setDismissed:^{
    //do stuff you wanted when it's dismissed
}];
[self presentViewController:Modal animated:YES completion:nil];

Here's a callback solution which takes less modifications to your modal and parent:

In the Model's .h add:

@property (nonatomic, copy) void (^dismissed)();

In the Model's .m put this in the completion when you dismiss the modal:

[self dismissViewControllerAnimated:YES completion:^{
    if(self.dismissed)
        self.dismissed();
}];

In the parent view controller when you instantiate your modal set the dismissed callback:

Modal = //Init your modal
[Modal setDismissed:^{
    //do stuff you wanted when it's dismissed
}];
[self presentViewController:Modal animated:YES completion:nil];

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