ios - 在AFNetworking上怎么用AFJSONRequestOperation来请求数据

Answer 1

I am new to iOS development, so I understand the meaning of the question very well.
I haven’t really used it during practiceAFJSONRequestOperation. I have always used the author’s demo below to request data

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://example.com/resources.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

Answer 2

There is no problem in getting the operation instance from the manager. You can command+mouse and click in to see what configuration the manager has made for the operation. In the end, he added the operation to the operationQueue to start the task, instead of using start directly

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFJSONResponseSerializer serializer];    manager.requestSerializer = [AFJSONRequestSerializer serializer];
AFHTTPRequestOperation *operation = [manager HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) {
            NSInteger statusCode = operation.response.statusCode;
            //...
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            NSInteger statusCode = operation.response.statusCode;
            //...
        }];

[manager.operationQueue addOperation:operation];