プロジェクトにおけるAFNの使い方

1.ネットワークの状態を監視する

// 1.          
    AFNetworkReachabilityManager *mgr = [AFNetworkReachabilityManager sharedManager]；
    // 2.            
    [mgr setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        //         ,       block
        switch (status) {
            case AFNetworkReachabilityStatusUnknown: //     
                [self setupRefresh];
                break;
                
            case AFNetworkReachabilityStatusNotReachable: //     (  )
                [SVProgressHUD showImage:nil status:@"     "];
                [self getStatusFromCache];
                break;
                
            case AFNetworkReachabilityStatusReachableViaWWAN: //       
                [self setupRefresh];
                break;
                
            case AFNetworkReachabilityStatusReachableViaWiFi: // WIFI
                [self setupRefresh];
                break;
        }
    }];
    
    // 3.    
    [mgr startMonitoring];

2.POST要求の送信

//     
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    TWAccount *accout = [TWAccountTool account];
    params[@"key"] = accout.key;
    params[@"client"] = @"ios";
   
    [[AFHTTPSessionManager manager] POST:@"http://www.jixuejiyong.com/mobile/index.php?act=hg_member_sns_home&op=friends_circle" parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        TTLog(@"%@",responseObject);
        self.topics = [TWMyStatus mj_objectArrayWithKeyValuesArray:responseObject[@"datas"][@"tracelist"]];
        //   
        [TWStatusCacheTool addStatuses:_topics];

        //------------    UI             -----------
        dispatch_async(dispatch_get_main_queue(), ^{
            [self.tableView reloadData];
        });
        //-----------------------------------------------------

        [self.tableView.mj_header endRefreshing];
        [SVProgressHUD dismiss];
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        [self.tableView.mj_header endRefreshing];
        [SVProgressHUD showErrorWithStatus:@"    "];
    }];

    }

3.GETリクエストの送信

 NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"type"] = @1;
    params[@"phone"] = self.phone;
    params[@"captcha"] = self.param1[@"datas"][@"captcha"];
    params[@"nchash"] = self.param1[@"datas"][@"nchash"];
    
    [[AFHTTPSessionManager manager] GET:@"http://www.jixuejiyong.com/mobile/index.php?act=hg_member_sns_home&op=get_captcha" parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        if (![responseObject[@"datas"][@"result"] isEqualToString:@"ture"]) {
            [SVProgressHUD showErrorWithStatus:@"      "];
        }
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        [SVProgressHUD showErrorWithStatus:@"      "];
    }];

4.画像をアップロード

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    
    //        
    UIImage *image = info[@"UIImagePickerControllerEditedImage"];
    //       
    self.imgView.image = [ImageTool image:image byScalingToSize:CGSizeMake(120, 120)];
    //              
    NSString *patch = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    NSData *imageData = UIImagePNGRepresentation(self.imgView.image);
    [imageData writeToFile:[NSString stringWithFormat:@"%@/%@",patch,@"icon.png"] atomically:YES];

    //     
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    TWAccount *accout = [TWAccountTool account];
    params[@"key"] = accout.key;
    params[@"client"] = @"ios";
    
    //     
    [[AFHTTPSessionManager manager] POST:@"http://www.jixuejiyong.com/mobile/index.php?act=hg_member_sns_home&op=changeAvatarHandle" parameters:params constructingBodyWithBlock:^(id  _Nonnull formData) {
        
        [formData appendPartWithFileData:imageData name:@"file" fileName:@"icon.png" mimeType:@"image/png"];
        
    } progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        TWAccount *accout = [TWAccountTool account];
        accout.member_avatar = responseObject[@"datas"][@"result"][@"src"];
        [TWAccountTool saveAccount:accout];
        TTLog(@"  %@",responseObject[@"datas"][@"result"][@"src"]);
        if ([responseObject[@"datas"][@"src"] isEqualToString:@""]) {
            [SVProgressHUD showErrorWithStatus:@"    "];
        }else{
            //     
            NSMutableDictionary *params1 = [NSMutableDictionary dictionary];
            params1[@"key"] = accout.key;
            params1[@"client"] = @"ios";
            params1[@"id"] = accout.member_id;
            params1[@"src"] = responseObject[@"datas"][@"result"][@"src"];
            //     
            [[AFHTTPSessionManager manager] POST:@"http://www.jixuejiyong.com/mobile/index.php?act=hg_member_sns_home&op=avatarheader" parameters:params1 progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
                
                if ([responseObject[@"datas"][@"result"] isEqualToString:@"success"]) {
                    [SVProgressHUD showImage:nil status:@"    "];
                }else{
                    [SVProgressHUD showErrorWithStatus:@"    "];
                }
                
            } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
                [SVProgressHUD showErrorWithStatus:@"    "];
            }];

            
        }
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
         [SVProgressHUD showErrorWithStatus:@"    "];
    }];
    
    [picker dismissViewControllerAnimated:YES completion:nil];
    
}

5.AFHTTPSessionManager内部にはNSURLSession AFHTTPRequestOperationManager内部にはNSURLConnection内部には両方ともネットワークリクエストを送信できます.6.ダウンロード

- (void)download
{
//    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
//    
//    [mgr downloadTaskWithRequest: progress: destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
//        return 
//    } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
//        
//    }];
}

7.画像をアップロードする別の方法(パラメータなし)

- (void)upload2
{
//    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
//    [mgr uploadTaskWithRequest: fromData: progress: completionHandler:];
}

8.xmlのデータを解析する

- (void)xml
{
    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    
    // responseSerializer             
    
    //   AFN， XML            
    mgr.responseSerializer = [AFXMLParserResponseSerializer serializer];
    
    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it",
                             @"type" : @"XML"
                             };
    
    [mgr GET:@"http://120.25.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, NSXMLParser *parser) {
        
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"    ---%@", error);
    }];
}

9.戻りデータの解析

 AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    //     “          ”，      
    mgr.responseSerializer = [AFHTTPResponseSerializer serializer];
    
//    [AFJSONResponseSerializer serializer]; //         JSON  
//    [AFXMLParserResponseSerializer serializer]; //         XML