AFNetworking 2.0 - 可变的JSON

Question

我的代码目前是这样的

NSURL *URL = [NSURL URLWithString:URLForSend];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]
                                     initWithRequest:request];
operation.responseSerializer = [AFJSONResponseSerializer serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
 {
     NSLog(@"%@", responseObject);
     [BoxJsonDataHelper gotNewJson:responseObject];
 } failure:^(AFHTTPRequestOperation *operation, NSError *error)
 {
     NSLog(@"Request Failure Because %@",[error userInfo]);
 }];

[operation start];

但是，当尝试编辑接收到的对象中的字典时，会出现一个错误，提示使用属于可变字典而非普通字典的方法。如何让AFNetworking使用嵌套的可变对象呢？

- Yoav Schwartz

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可能是 如何从 AFNetworking 和 AFJSONRequestOperation 获取可变字典？ 的重复问题。 - Leena

Answer 1

您需要告诉AFJSONResponseSerializer返回可变容器:

operation.responseSerializer = 
  [AFJSONResponseSerializer serializerWithReadingOptions: NSJSONReadingMutableContainers]

这都有详细的记录：http://cocoadocs.org/docsets/AFNetworking/2.0.0/

- rckoenes

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谢谢，我从文档中误解了它应该是默认设置。 - Yoav Schwartz

顺便说一下，这个选项优化了一些内存处理，因为它不会将可变容器复制到不可变容器中。而且为了返回可变的叶子节点：manager.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions: NSJSONReadingMutableContainers | NSJSONReadingMutableLeaves]; - Borzh