Objective c 从JSON加载属性，获取；已发送到解除分配实例的消息“；

因此，我从web服务加载我的自定义对象，并尝试将属性存储为NSStrings，但始终遇到以下错误：

-[CFString _cfTypeID]: message sent to deallocated instance 0x100d3d40
-[CFString retain]: message sent to deallocated instance 0x100d3d40

我启用了僵尸，但这并没有真正向我展示解决方案

我的财产定义如下：

@property (strong, nonatomic) NSString *title;
@property (assign, nonatomic) NSString *ID;
@property (strong, nonatomic) NSString *redLabel;
@property (strong, nonatomic) NSString *greenLabel;

然后我创建一个对象的实例并调用webservice

QuickList *list = [[QuickList alloc] init];
[list loadLatestQuickList];

最后，在

loadLatestQuickList

NSURLRequest *request = // create a GET request...
[NSURLConnection sendAsynchronousRequest:request queue:notMainQueue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error){
    NSError *parsingError;
    NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&parsingError];
    if (!parsingError && [json isKindOfClass:[NSDictionary class]]) {
        NSDictionary *dataDictionary = [json objectForKey:@"data"];
        NSDictionary *quickListDictionary = [dataDictionary objectForKey:@"QuickList"];

        NSString *ID = [quickListDictionary objectForKey:@"id"];
        NSString *title = [quickListDictionary objectForKey:@"name"];
        NSString *redLabel = [quickListDictionary objectForKey:@"red_label"];
        NSString *greenLabel = [quickListDictionary objectForKey:@"green_label"];

        self.ID = ID;
        self.title = title;
        self.redLabel = redLabel;
        self.greenLabel = greenLabel;

        // tell a channel that everything is loaded
    }
    else {
        NSLog(@"%@",parsingError);
    }
}];

---

现在，每当我尝试访问

list.ID

或其他一些属性时，就会出现“deallocated instance”错误。关于我为什么会出现此错误，您有什么想法吗？

您的

ID

属性也应该是

strong