访问模态视图控制器父级 [英] Access modal view controller parent

问题描述

我正在以模态方式呈现ViewController。
如何访问父视图控制器？

I'm presenting a ViewController modally. How can I access the parent view controller ?

我的架构是TabBarController => VC1 => VC2 => VC3 => MVC1，我想达到来自MVC1的VC3。

My architecture is TabBarController=>VC1=>VC2=>VC3=>MVC1, and I want to reach VC3 from MVC1.

在VC3中，我有这段代码：

In VC3, I have this code :

- (void) editAd{
    AskPasswordViewController *modalViewController = [[AskPasswordViewController alloc] initWithNibName:@"AskPasswordView" bundle:nil];

    NSLog(@"modalparent class=%@", [[modalViewController parentViewController] class]);

    [self presentModalViewController:modalViewController animated:YES];
    [modalViewController release];
}

我在MVC1中试过这个：

I tried this in MVC1:

- (void) sendRequest {
    NSLog(@"classe : %@",[[self parentViewController] class] );
}

但它返回我的TabBarViewController ......

but it returns my TabBarViewController...

推荐答案

我这样做的方法就是简单地创建一个委托。在 AskPasswordViewController 的标题中，输入

The way I'd go about something like this is to simply create a delegate. In AskPasswordViewController's header, put

id delegate;

和

@property (nonatomic, assign) id delegate;

在实现文件中合成它。然后在分配/初始化模态控制器之后，在呈现它之前，设置 modalViewController.delegate = self; 。然后在模态控制器中，您可以调用 self.delegate 从显示它的视图控制器获取信息。我希望这有助于

Synthesize it in the implementation file. Then after you alloc/init the modal controller, and before you present it, set modalViewController.delegate = self;. Then within the modal controller, you can call self.delegate to get information from the view controller that presented it. I hope this helps

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