为什么我收到错误？

Why am I getting these errors? alt text http://img39.imageshack.us/img39/2203/help.tif

为什么我会收到这些错误? alt text http://img39.imageshack.us/img39/2203/help.tif

It says:

Error: Request for member "jokeTableView" in something not a struction or union

错误:请求成员“jokeTableView”,而不是struction或union

What does that mean? And why is it breaking. I tried reading about initWithStyle but I just could catch up on it

那是什么意思?为什么它会破裂。我尝试阅读有关initWithStyle但我只能赶上它

Here is my .h file:

这是我的.h文件:

#import <UIKit/UIKit.h>


 @interface TableViewController : UITableViewController {

NSMutableArray *jokes;
IBOutlet UITableView *jokeTableView; 


 } 

 @property (nonatomic, retain) NSMutableArray *jokes;

 @end

Thanks!

2 个解决方案

#1

Your object (TableViewController) has no property named jokeTableView.

您的对象(TableViewController)没有名为jokeTableView的属性。

In order to access jokeTableView with the special dot operator, it needs to be a property. Otherwise you have to access it using Key-Value-Coding compliant methods or directly using the -> operator (or just use it as an ivar and no reference to self):

为了使用特殊的点运算符访问jokeTableView,它需要是一个属性。否则,您必须使用符合键值编码的方法或直接使用 - >运算符(或仅将其用作ivar并且不引用self)来访问它:

jokeTableView.delegate = self;

self->jokeTableView.delegate = self;

[self jokeTableView].delegate = self;

@property (retain) UITableView *jokeTableView;
// later...
self.jokeTableView.delegate = self;

Also note, however, that you are setting an outlet in the initializer and this won't work. You'll have to set this in the -[TableViewController awakeFromNib] method since self->jokeTableView will be nil when the initializer is actually called (which happens in IB prior to serializing the object into the nib file).

但请注意,您在初始化程序中设置了一个插座,但这不起作用。你必须在 - [TableViewController awakeFromNib]方法中设置它,因为当实际调用初始化程序时,self-> jokeTableView将为nil(在将对象序列化为nib文件之前在IB中发生)。

#2

Since you are doing this at init time, the outlets should be NULL, so this initialization shouldn't do anything. This should be done at awakeFromNib time at the earliest.

由于您在初始化时执行此操作,因此出口应为NULL,因此此初始化不应执行任何操作。这应该最早在awakeFromNib时完成。

#1