错误:声明@synthesize方法

Question

我的.h文件中的代码如下所示

@interface tweetViewController : UIViewController<UIPickerViewDataSource ,UIPickerViewDelegate> {

    NSArray *activities;
    NSArray *feelings;

}

在我的.m文件中,我使用了@synthesize属性

#import "tweetViewController.h"
@synthesize activites,feelings;

但它显示我错误消息....

Answer 1

你需要把它放在一个实现中.

@synthesize ...用这个替换这行:

@implementation tweetViewController
@synthesize activities, feelings;

@end

您还需要为此声明@propertys,并关闭@interface正确的方法:

替换以下行:

@interface tweetViewController : UIViewController<UIPickerViewDataSource ,UIPickerViewDelegate> {

    NSArray *activities;
    NSArray *feelings;

}

有了这个:

@interface tweetViewController : UIViewController<UIPickerViewDataSource , UIPickerViewDelegate>

@property (nonatomic, retain) NSArray *activities;
@property (nonatomic, retain) NSArray *feelings;

@end