如何将文本从文本字段发送到另一个类？ [英] How to send the text from textfield to another class?

问题描述

在我的应用程序Iphone中，我想做一个简单的事情，例如：我有一个带有文本字段和按钮的GroupDetailViewController。当用户按下按钮时，我想将文本从文本字段发送到另一个类ItemViewController并将此文本设置为标签。我不知道该怎么办。我是Iphone的新手，我只做了一些教程。我在这里查看：如何将文本字段值发送给另一个类但我不明白答案。谁能解释我或给我一个例子吗？

In my app Iphone, I want to do a simple thing like : I have a GroupDetailViewController with a text Field and a button. When user press the button I want to send the text from textfield to another class ItemViewController and set this text to a label. I have no idea how can I do this. I am new on Iphone,I have done just some tutorials. I have looked here : How to send text field value to another class but I dont understand the answer. Can anyone explain me or give me an example?

推荐答案

让我们假设您的第二个类是 SecondViewController >。

现在，在SecondViewController中声明一个 NSString 并设置其属性。

Let us assume that your second class is SecondViewController.
Now in SecondViewController declare one NSString and set its properties.

SecondViewController.h

NSString *strTextValue;  

....  

@property(nonatomic,retain) NSString *strTextValue; 

SecondViewController.m

@synthesize strTextValue;

现在在 GroupDetailViewController 中，在按钮触摸事件上，将< strTextValue 中的strong> textfield 。

Now in GroupDetailViewController, on button touch event, put the value from textfield in strTextValue.

-(IBAction)ButtonMethod:(id)sender
{
SecondViewController *controller = [[SecondViewController alloc]init];
controller.strTextValue = [txtField text];  
//Navigate to SecondViewController
}  

放入在 SecondViewController

SecondViewController.m

lbl.text = strTextValue;

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