如何将数据传递回父视图控制器。我正在使用addSubView方法来显示子视图 [英] How can i pass data back to parent view controller. am using addSubView method to show child view

问题描述

如何将数据传回父视图控制器。我使用addSubView方法来显示子视图。

How can i pass data back to parent view controller. im using addSubView method to show child view.

addFields = [[AddFields alloc] initWithNibName:@"AddFields" bundle:nil];
[self.view addSubview:addFields.view];

现在我想将数据从AddFields视图发送到我的父控制器。我怎样才能做到这一点。任何人都可以帮助我..

Now i want to sent data from "AddFields" view to my parent controller. How can i do that. Can anyone help me..

推荐答案

一个简单的方法是使用 NSNotificationCenter 看到这个示例

One simple way to do is using NSNotificationCenter see this example

如果要发送对象，请从AddFields发布通知

Post you notification from your AddFields when you want to send the object

[[NSNotificationCenter defaultCenter] postNotificationName:@"notificaiton_name" object:object_you_want_to_send];

在父视图控制器中添加NSNotificationCenter的观察者

And in your parent view controller add observer for the NSNotificationCenter

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(method_you_want_to_call:) name:@"notificaiton_name" object:nil];

定义 method_you_want_to_call：类似这样的内容

-(void) method_you_want_to_call:(NSNotification *) obj{
     //lets say you are sending string as object
     NSString *string=(NSString *) [obj object] ;
}

注意： notificaiton_name 必须匹配

其他方式您可以使用委托协议方法...请参阅示例

Other way you can use Delegate Protocol method... See this example

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