blocks|key|4309019|text|您必须在viewWillAppear方法中指定此字符串，在初始化视图之前，不能配置IBOutlets+(我假设testlabel是一个IBOutlet+UILabel+*)。如果这不起作用，请详细说明错误是什么。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4309020|entityMap^0|4|E|1J|9|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

You must assign this string in your <code>viewWillAppear</code> method, IBOutlets (I'm assuming <code>testlabel</code> is a IBOutlet UILabel *) cannot be configured until the view is initialized. If this doesn't help please specify what the error is.

blocks|key|1276854|text|更好的方法是在AddTaskViewController上创建一个NSString*属性。你可以这样做：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1276855|在AddTaskViewController.h中添加以下内容：|1276856|@property+(nonatomic,+strong)+NSString*+myLabelsText;|code-block|syntax|javascript|1276857|然后在AddTaskViewController.m中，一定要在viewWillAppear中添加以下内容|1276858|self.testlabel.text+=+self.myLabelsText;|1276859|现在假设你已经适当地声明了你的testLabel和myLabelsText，并且它们被合成了，你的视图控制器将在适当的时间正确地应用字符串，然后你的函数应该被修改为：|1276860|-+(IBAction)donebutton:(id)sender+{
++++AddTaskViewController+*addtask+=+[[AddTaskViewController+alloc]initWithNibName:@"AddTask"+bundle:nil];

++++//+Set+the+value+on+your+new+NSString*+property+and+let+the+view+controller+handle+the+rest
++++addTask.myLabelsText+=+self.zaman1.text;

++++//+Don't+you+want+to+'present'+the+view+controller+rather+than+'dismiss'+after+having+provided+it+with+data?
++++[self+dismissViewControllerAnimated:YES+completion:nil];

}|1276861|entityMap^0|7|L|X|9|0|1|N|0|0|3|N|W|E|0|0|F|9|P|C|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1B|8|@$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|S|3|T|5|J|7|1G|8|@]|D|@]|E|$K|L]]|$1|U|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|V|$]]

A better approach would be to create an <code>NSString*</code> property on <code>AddTaskViewController</code>. You can do it like this: 

In <code>AddTaskViewController.h</code> add the following:

<pre><code>@property (nonatomic, strong) NSString* myLabelsText;
</code></pre>

then in <code>AddTaskViewController.m</code> be sure to add this in <code>viewWillAppear</code>:

<pre><code>self.testlabel.text = self.myLabelsText;
</code></pre>

Now assuming you've declared your <code>testLabel</code> and <code>myLabelsText</code> appropriately and they get synthesized, your view controller will apply the string correctly at the proper time and your function should then be changed to this:

<pre><code>- (IBAction)donebutton:(id)sender {
 AddTaskViewController *addtask = [[AddTaskViewController alloc]initWithNibName:@"AddTask" bundle:nil];

 // Set the value on your new NSString* property and let the view controller handle the rest
 addTask.myLabelsText = self.zaman1.text;

 // Don't you want to 'present' the view controller rather than 'dismiss' after having provided it with data?
 [self dismissViewControllerAnimated:YES completion:nil];

}
</code></pre>

blocks|key|2429593|text|你应该使用委托协议，而不是在以前的视图控制器上设置按钮的属性，只需传递回一个字符串。这个问题应该会帮助你实现委派协议|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2429594|dismissModalViewController+AND+pass+data+back|offset|length|2429595|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back?rq=1^0|0|0|19|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

You should use delegate protocols and instead of setting properties of button on previous view controller just pass a string back. This question should help you in implementing Delegate protocol

<a href="https://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back?rq=1">dismissModalViewController AND pass data back</a>

This method not working to me. I'm working for minutes. I somehow could not.

This is my code.

<pre><code>- (IBAction)donebutton:(id)sender {
 AddTaskViewController *addtask = [[AddTaskViewController alloc]initWithNibName:@"AddTask" bundle:nil];
 addtask.testlabel.text = self.zaman1.text;
 [self dismissViewControllerAnimated:YES completion:nil];

}
</code></pre>

Everything is normal but not working. Is that not so? It is wrong?

iOS: Passing Data wrong

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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这个方法对我不起作用。我在工作几分钟。不知何故，我做不到。这是我的代码。- (IBAction)donebutton:(id)sender {    AddTaskViewController *addtask = [[AddTaskViewController alloc]initWithNibName:@"AddT...

问iOS:错误地传递数据
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