IBOutlet声明？ [英] IBOutlet declarations?

问题描述

我已经看到下面的代码写了3种不同的方式（关于IBOutlet）是否重要，我想说，添加IBOutlet到声明和@property更简洁。

I have seen the code below written 3 different ways (with regards to IBOutlet) Does it matter, I would say adding IBOutlet to both the declaration and the @property was more concise.

JUST属性：

@class SwitchViewController;

@interface iPhone_switcherAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;
    SwitchViewController *switchViewController;
}

@property(nonatomic, retain) IBOutlet UIWindow *window;
@property(nonatomic, retain) IBOutlet SwitchViewController *switchViewController;
@end

JUST DECLARATION：

JUST DECLARATION:

@class SwitchViewController;

@interface iPhone_switcherAppDelegate : NSObject <UIApplicationDelegate> {
    IBOutlet UIWindow *window;
    IBOutlet SwitchViewController *switchViewController;
}

@property(nonatomic, retain) UIWindow *window;
@property(nonatomic, retain) SwitchViewController *switchViewController;
@end

BOTH：

@class SwitchViewController;

@interface iPhone_switcherAppDelegate : NSObject <UIApplicationDelegate> {
    IBOutlet UIWindow *window;
    IBOutlet SwitchViewController *switchViewController;
}

@property(nonatomic, retain) IBOutlet UIWindow *window;
@property(nonatomic, retain) IBOutlet SwitchViewController *switchViewController;
@end

cheers gary

cheers gary

推荐答案

不要紧。使用10.6 64位SDK，你也可以写没有ivar的属性：

Should not matter. With the 10.6 64-bit SDK you can also write the property without the ivar:

@class SwitchViewController;

@interface iPhone_switcherAppDelegate : NSObject <UIApplicationDelegate> {
}

@property(nonatomic, retain) IBOutlet UIWindow *window;
@property(nonatomic, retain) IBOutlet SwitchViewController *switchViewController;
@end

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