网络-AFN

AFN

什么是AFN
全称是AFNetworking，是对NSURLConnection的一层封装
虽然运行效率没有ASI高，但是使用比ASI简单
在iOS开发中，使用比较广泛

AFN的github地址
https://github.com/pokeb/AFNetworking/AFNetworking

AFN的版本选择

AFHTTPSessionManager
AFHTTPSessionManager
是AFN中最重要的对象之一
封装了HTTP请求的常见处理
GETPOST请求
解析服务器的响应数据

创建
AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];

GETPOST请求
GET请求
- (NSURLSessionDataTask *)GET:(NSString *)URLString
                   parameters:(id)parameters
                   success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
                   failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure

POST请求
- (NSURLSessionDataTask *)POST:(NSString *)URLString
                   parameters:(id)parameters
                   success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
                   failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure


文件上传
- (NSURLSessionDataTask *)POST:(NSString *)URLString
                    parameters:(id)parameters
     constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
                    success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
                    failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure

监控联网状态
AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];
[manager startMonitoring];

[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
    NSLog(@"%d", status);
}];

提示：要监控网络连接状态，必须要先调用单例的startMonitoring方法

ASI和AFN架构对比