Question

我正在按照本教程学习AfNetworking中的IOS我正在使用以下函数从服务器获取响应：

例如，我有一个返回值的方法：

{
    __block id response = [[NSDictionary alloc]init];
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager GET:URLString parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        response=responseObject;
        NSLog(@"JSON: %@", response);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

    NSLog(@" return Dic ==> %@",response);
    return response;
}

我想要的是编写一个函数，它会在得到响应之后将响应返回为NSDictionary。我不知道语法。任何人都可以帮助我吗？

Answer 1

当然......你可能不需要将NSDictionary声明为块对象，但是：

{
    if ([responseObject isKindOfClass:[NSDictionary class]]) {
        NSDictionary *response = (NSDictionary *)responseObject;
        ...
    }
}

Answer 2

在成功块之外返回响应将仅包含您初始化的空白NSDictionary对象。封装方法可以将块作为接收响应时要执行的参数。

-(void)makeServiceCallSuccess:(void (^)(NSDictionary *response))success
           failure:(void (^)(NSError *error))failure {

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager GET:URLString parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

        response = (NSDictionary *)responseObject;
        success(response);
        NSLog(@"JSON: %@", response);

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        failure(error);
        NSLog(@"Error: %@", error);
    }];
}

然后你会调用这样的方法：

[YourClass makeServiceCallSuccess:^(NSDictionary *response) {

    //Do stuff with 'response'

} failure:^(NSError *error) {
    //Do stuff with 'error'
}];

如何通过AFNetworking从NSObject类获取响应值？

2 个答案: