插座在Interface BuilderXcode 3或Xcode4中都没有显示

问题描述

|| 我正在学习开发iOS应用程序（我是Objective-C和Cocoa的新手），并且我在做这个非常简单的示例练习（两个标签显示在Label中按下了Left或Right按钮）。 我只创建了一个IBOutlet和几行代码，保存了两个AppViewController文件，当尝试将IBOutlet与Interface Builder中的实际标签连接时，插座没有显示。 我正在使用iOS SDK 4.3 这是源代码：

//
//  BotonViewController.h
//  Boton
//
//  Created by Abu on 5/23/11.
//  copyright 2011 __MyCompanyName__. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface Hola_MundoViewController : UIViewController {

IBOutlet UILabel *statusText; 

}

@property (retain,nonatomic) UILabel *statusText;

-(IBAction)buttonpressed: (id)sender;

@end

和

//
//  BotonViewController.m
//  Boton
//
//  Created by Abu on 5/23/11.
//  copyright 2011 __MyCompanyName__. All rights reserved.
//

#import \"BotonViewController.h\"

@implementation Hola_MundoViewController
@synthesize statusText;

-(IBAction)buttonpressed: (id)sender
{
Nsstring *title = [sender titleForState:UIControlStatenormal];
Nsstring *newText = [[Nsstring alloc] initWithFormat:
                     @\"%@ button pressed.\",title];
statusText.text = newText;
[newText release];
}

// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotatetoInterfaceOrientation:         (UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (void)didReceiveMemoryWarning {
// Releases the view if it doesn\'t have a superview.
[super didReceiveMemoryWarning];

// Release any cached data,images,etc that aren\'t in use.
}

- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}


- (void)dealloc {
[statusText release];
    [super dealloc];
}

@end

好吧，就是这样，希望您能为我提供帮助，这可能是一个愚蠢的错误，但是我已经浏览了很多，但找不到解决方案。     

解决方法

您的财产声明应如下所示

@property (retain,nonatomic) IBOutlet UILabel *statusText;