AFNetworking块和Feed

Question

好的我还有另一个问题，今晚，使用AFNetworking，我解析我的JSON Stream，一个添加对象MutableArray，当我插入尝试在成功块之外打印数组时，它表示null，但是在这个块里面它有效，所以如何将_listOfNewsArray传递给mainthread？

这是我的代码：

- (void)viewDidLoad
{
    [super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:@"bgWhitelight" ofType:@"png"];
self.tableView.backgroundColor = [[UIColor alloc] initWithPatternImage:[[UIImage alloc] initWithContentsOfFile:path]];

NSURLRequest *newsRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://aXXXXXXXXXXXipt/beta.php"]];

AFJSONRequestOperation *newsJSONRequest = [AFJSONRequestOperation JSONRequestOperationWithRequest:newsRequest success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
{
    NSArray *newsArray = [JSON objectForKey:@"news"];
    _listOfNews = [[NSMutableArray alloc]init];

    for (NSDictionary *oneNews in newsArray) {

        CCENews *currentNews = [[CCENews alloc]init];
        currentNews.title = [oneNews objectForKey:@"title"];
        currentNews.content = [oneNews objectForKey:@"content"];
        currentNews.category = [currentNews getHiResCategoryPicture:[oneNews objectForKey:@"category"]];
        currentNews.date = [oneNews objectForKey:@"date"];
        currentNews.imageURL = [oneNews objectForKey:@"pictureurl"];

        [_listOfNews addObject:currentNews];
    }
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {

    NSLog(@"%@", error);
}];

[newsJSONRequest start];

Answer 1

事实上，我发现解决方案，只需使用self.listOfNews，只需要考虑一下！ -

Answer 2

将 listOfNews的创建移出块并进入viewDidLoad，或将ivar变为块变量（ _block NSM ....）。我更喜欢第一种解决方案。