管理enqueueBatchOfHTTPRequestOperationsWithRequests AFHTTPClient子类

时间:2013-05-15 16:05:56

标签: ios objective-c request afnetworking

我想从具有AFNetworking和此AFHTTPClient子类的Web服务实现多个Json请求,以创建表View。我将在MainViewController中创建tableView。

 #import "AFHTTPClient.h"
        @interface YlyHTTPClient : AFHTTPClient

        + ( YlyHTTPClient *)sharedHTTPClient;
        - (id)initWithBaseURL:(NSURL *)url;
  @end


    #import "YlyHTTPClient.h"

    static NSString * const urlString = @"http://localhost/example/";
    @implementation YplyHTTPClient

    + (YlyHTTPClient *)sharedHTTPClient {
        static YeeplyHTTPClient *_httpClient = nil;
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            _httpClient = [[YlyHTTPClient alloc] initWithBaseURL:[NSURL URLWithString:urlString]];
            [_httpClient setParameterEncoding:AFJSONParameterEncoding];
            [_httpClient registerHTTPOperationClass:[AFJSONRequestOperation class]];
        });

        return _httpClient;
    }

    -(id)initWithBaseURL:(NSURL *)url {
        self = [super initWithBaseURL:url];
        if (!self) {
            return nil;
        }
        [self registerHTTPOperationClass:[AFJSONRequestOperation class]];
        [self setDefaultHeader:@"Accept" value:@"application/json"];
        return self;
    }

首先,我尝试从MainViewController调用enqueueBatchOfHTTPRequestOperationsWithRequest方法执行此操作:

 - (void)viewDidLoad
    {
        NSMutableArray *mutableRequests = [NSMutableArray array];
        for (NSString *URLString in [NSArray arrayWithObjects:@"users", @"projects", @"interestedUsers", nil]) {
            [mutableRequests addObject:[[YlyHTTPClient sharedHTTPClient] requestWithMethod:@"GET" path:URLString parameters:nil]];
        }

 [[YlyHTTPClient sharedHTTPClient] enqueueBatchOfHTTPRequestOperationsWithRequests:mutableRequests progressBlock:^(NSUInteger numberOfCompletedOperations, NSUInteger totalNumberOfOperations) {
        NSLog(@"%lu of %lu Completed", (unsigned long)numberOfCompletedOperations, (unsigned long)totalNumberOfOperations);
    } completionBlock:^(NSArray *operations) {
        NSLog(@"Completion: %@", [operations objectAtIndex:1]); 
    }];
        [super viewDidLoad];
}

我从NSLog获得的输出是:

 Completion: <AFJSONRequestOperation: 0x75dbe60, state: isFinished, cancelled: NO request: <NSMutableURLRequest http://localhost/yeeply_service/api/example/projects>, response: <NSHTTPURLResponse: 0x72cd000>>

(我有三个NSMutableRequest,但我只在这里展示一个。)

我的第一个问题是,如何从操作NSArray获取数据? NSArray中没有JSON响应的信息吗?如果有,我怎么能把它作为字典阅读?

我的第二个问题是在我的AFHTTClient子类中实现此方法,并使用委托从ViewController调用它,并直接在ViewController中接收数据,以便我可以管理这些数据并在tableView中设置它。 /强>

-(void)enqueueBatchOfHTTPRequestOperationsWithRequests:(NSArray *)urlRequests
                                      progressBlock:(void (^)(NSUInteger numberOfFinishedOperations, NSUInteger totalNumberOfOperations))progressBlock 
                                    completionBlock:(void (^)(NSArray *operations))completionBlock;

谢谢。

1 个答案:

答案 0 :(得分:0)

依次回答你的问题:

  

我的第一个问题是,如何从操作NSArray获取数据?

您可以从集合中每个操作的responseJSON属性中获取此信息:

for (AFJSONRequestOperation *operation in operations) {
  id JSON = operation.responseJSON;
}
  

我的第二个问题是在我的AFHTTClient子类中实现此方法,并使用委托从ViewController调用它,并直接在ViewController中接收数据,以便我可以管理这些数据并在tableView中设置它。

在子类中,使用所需信息创建一个带有回调块参数的新方法,并在批处理完成块的末尾调用该块。