iOS AFN

AFN

NSURLConnection包装方法

• GET

• // 1.创建AFN管理者
  // AFHTTPRequestOperationManager内部包装了NSURLConnection
  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
  
  // 2.利用AFN管理者发送请求
  NSDictionary *params = @{
                         @"username" : @"name",
                         @"pwd" : @"password"
                         };
  [manager GET:@"http://12.2.226.186:32812/login" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
     NSLog(@"请求成功---%@", responseObject);
  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
     NSLog(@"请求失败---%@", error);
  }];

• POST

• // 1.创建AFN管理者
  // AFHTTPRequestOperationManager内部包装了NSURLConnection
  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
  
  // 2.利用AFN管理者发送请求
  NSDictionary *params = @{
                         @"username" : @"name",
                         @"pwd" : @"password"
                         };
  [manager POST:@"http://12.2.226.186:32812/login" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"请求成功---%@", responseObject);
  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"请求失败---%@", error);
  }];

NSURLSession包装方法

• GET

  // 1.创建AFN管理者
  AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
  
  // 2.利用AFN管理者发送请求
  NSDictionary *params = @{
                         @"username" : @"name",
                         @"pwd" : @"password"
                         };
  
  [manager GET:@"http://12.2.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, id responseObject) {
     NSLog(@"请求成功---%@", responseObject);
  } failure:^(NSURLSessionDataTask *task, NSError *error) {
    NSLog(@"请求失败---%@", error);
  }];

• POST

• // 1.创建AFN管理者
  AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
  
  // 2.利用AFN管理者发送请求
  NSDictionary *params = @{
                         @"username" : @"name",
                         @"pwd" : @"password"
                         };
  
  [manager POST:@"http://12.2.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, id responseObject) {
    NSLog(@"请求成功---%@", responseObject);
  } failure:^(NSURLSessionDataTask *task, NSError *error) {
    NSLog(@"请求失败---%@", error);
  }];

文件下载

 // 1.创建AFN管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    // 2.利用AFN管理者发送请求
     NSURLRequest *reuqest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://12.2.226.186:32812/resources/videos/minion_02.mp4"]];

    [[manager downloadTaskWithRequest:reuqest progress:nil  destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
        // targetPath: 已经下载好的文件路径
        NSLog(@"targetPath = %@", targetPath);
        NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
        NSURL *documentsDirectoryPath = [NSURL fileURLWithPath:[path stringByAppendingPathComponent:response.suggestedFilename]];
        // 返回需要保存文件的目标路径
        return documentsDirectoryPath;
    } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
        NSLog(@"filePath = %@", filePath);
    }] resume];

监听进度

/*
     要跟踪进度，需要使用 NSProgress，是在 iOS 7.0 推出的，专门用来跟踪进度的类！

     NSProgress只是一个对象！如何跟踪进度！-> KVO 对属性变化的监听！
     @property int64_t totalUnitCount;        总单位数
     @property int64_t completedUnitCount;    完成单位数
     */
    NSProgress *progress = nil;
    // 注册通知
    [progress addObserver:self forKeyPath:@"completedUnitCount" options:NSKeyValueObservingOptionNew context:nil];
    - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    NSLog(@"%@", object);
    /**
     准确的获得进度
     localizedDescription               10%
     localizedAdditionalDescription     completed 32,768 of 318,829
     fractionCompleted                  0.102776(completedUnitCount/totalUnitCount)
     */
    if ([object isKindOfClass:[NSProgress class]]) {
        NSProgress *p = (NSProgress *)object;
        NSLog(@"%@, %@, %f", p.localizedDescription, p.localizedAdditionalDescription, p.fractionCompleted);

文件上传

// 1.创建AFN管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    // 2.利用AFN管理者发送请求
    [manager POST:@"http://12.2.226.186:32812/upload" parameters:@{@"username" : @"jx"} constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        NSData *data = [NSData dataWithContentsOfFile:@"/Users/Jx-Liu/Desktop/Snip20150811_1.png"];
        [formData appendPartWithFileData:data name:@"file" fileName:@"jx.png" mimeType:@"image/png"];
    } success:^(NSURLSessionDataTask *task, id responseObject) {
          NSLog(@"请求成功---%@", responseObject);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"请求失败---%@", error);
    }];
[formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/Jx-Liu/Desktop/Snip20150811_1.png"] name:@"file" fileName:@"jx.png" mimeType:@"image/png" error:nil];
[formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/Jx-Liu/Desktop/Snip20150811_1.png"] name:@"file" error:nil];

• AFN解耦

  • 自定义单利类基础Manager
  • 优点: 替换框架只需要求改单利类即可

• 序列化

  • AFN默认将服务器返回的数据当做JSON处理, 会自动解析
    • manager.responseSerializer = [AFJSONRequestSerializer serializer];
  • 告诉AFN，以XML形式解析服务器返回的数据
    • manager.responseSerializer = [AFXMLParserResponseSerializer serializer];
  • 告诉AFN, 不处理服务器返回的数据, 原样返回
    • manager.responseSerializer = [AFHTTPResponseSerializer serializer];

• 网络状态检测

• / 1.创建网络监听对象
      AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];
      // 2.设置网络状态改变回调
      [manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
          /*
           AFNetworkReachabilityStatusUnknown          = -1,  // 未知
           AFNetworkReachabilityStatusNotReachable     = 0,   // 无连接
           AFNetworkReachabilityStatusReachableViaWWAN = 1,   // 3G 花钱
           AFNetworkReachabilityStatusReachableViaWiFi = 2,   // 局域网络,不花钱
           */
          switch (status) {
              case 0:
                  NSLog(@"无连接");
                  break;
              case 1:
                  NSLog(@"3G 花钱");
                  break;
              case 2:
                  NSLog(@"局域网络,不花钱");
                  break;
              default:
                  NSLog(@"未知");
                  break;
          }
      }];
  
      // 3.开始监听
      [manager startMonitoring];

• 苹果自带

•     - (void)viewDidLoad {
      [super viewDidLoad];
  
      // 注册通知
      [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getNetworkStatus) name:kReachabilityChangedNotification object:nil];
  
      // 开始监听网络
      self.reachability = [Reachability reachabilityForInternetConnection];
      [self.reachability startNotifier];
  }
  
  - (void)dealloc
  {
      [[NSNotificationCenter defaultCenter] removeObserver:self];
      [self.reachability stopNotifier];
  }
  - (void)getNetworkStatus{
      if ([Reachability reachabilityForLocalWiFi].currentReachabilityStatus != NotReachable) {
          NSLog(@"wifi");
      }else if ([Reachability reachabilityForInternetConnection].currentReachabilityStatus != NotReachable)
      {
          NSLog(@"手机自带网络");
      }else
      {
          NSLog(@"没有网络");
      }
  }

  CocoaPods安装失败

  • CocoaPods安装东西的时候它要找到Xcode的Developer文件夹, 如果找不到会报如下错误

  • 

  • 解决方案

    • JX替换为你自己的用户名

    • sudo xcode-select --switch /Users/JX/Applications/Xcode.app/Contents/Developer

      

    •