封装改了好多次,一直没更新这里

新增 -取消请求
-网络监听
-https证书

1.手机网络监听
苹果官方有提供一个 Reachablity 来检测用户网络情况, 但是项目中如果导入 AFNetworking 的话,就没必要再用 Reachablity 了.

pragma mark - 开启手机网络的监听

• (void)startNotificationNetworkStatus
  {
  [NetWork shareInstance].currentNetworkStatus = NO;

  AFNetworkReachabilityManager *networkStatusManage = [AFNetworkReachabilityManager sharedManager];
  [networkStatusManage setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
  switch (status) {
  case AFNetworkReachabilityStatusUnknown:
  NSLog(@"未识别的网络");
  [NetWork shareInstance].currentNetworkStatus = NO;
  [NetWork shareInstance].netStatus = NetworkStatusNoNet;
  break;
  case AFNetworkReachabilityStatusNotReachable:
  NSLog(@"网络连接已断开");
  [NetWork shareInstance].currentNetworkStatus = NO;
  [NetWork shareInstance].netStatus = NetworkStatusNoNet;
  break;
  case AFNetworkReachabilityStatusReachableViaWWAN:
  NSLog(@"当前网络为移动网络");
  [NetWork shareInstance].currentNetworkStatus = YES;
  [NetWork shareInstance].netStatus = NetworkStatusMobile;
  break;
  case AFNetworkReachabilityStatusReachableViaWiFi:
  NSLog(@"当前网络为Wifi网络");
  [NetWork shareInstance].currentNetworkStatus = YES;
  [NetWork shareInstance].netStatus = NetworkStatusWifi;
  break;
  default:
  break;
  }
  }];
  [networkStatusManage startMonitoring];
  }

pragma mark - 返回当前网络是否可用

• (BOOL)getCurrentNetworkStatus
  {
  return [NetWork shareInstance].currentNetworkStatus;
  }

pragma mark - 返回当前的网络状态

• (NetworkStatus)returnCurrentNetworkStatus
  {
  return [NetWork shareInstance].netStatus;
  }

2.取消请求
在NSURLSession开发中,所有的任务都是由session发起的
AFNetworking 3.0 之后,都是基于 NSURLSession
AF中调用请求 会返回一个 NSURLSessionDataTask 对象
可以先把这个对象添加到队列,当然,需要先创建一个队列管理的容器

pragma mark - 队列管理容器

• (NSMutableDictionary *)taskQueue
  {
  NSMutableDictionary * taskDic = objc_getAssociatedObject(self, @selector(addTask:));
  if (!taskDic) {
  taskDic = @{}.mutableCopy;
  objc_setAssociatedObject(self, @selector(addTask:), taskDic, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
  }
  return taskDic;
  }

pragma mark - 添加队列

• (void)addTask:(NSURLSessionDataTask *)task
  {
  NSMutableDictionary * taskQueue = [self taskQueue];
  [taskQueue setObject:task forKey:@(task.taskIdentifier)];
  }

请求返回结果后,需要从队列移除.删除的时候,最好先判断是否存在队列

pragma mark - 判断有没有执行中的队列

• (BOOL)isRequesting
  {
  NSMutableDictionary * taskDic = objc_getAssociatedObject(self, @selector(addTask:));
  if (taskDic.allValues.count > 0) {
  return YES;
  }
  return NO;
  }

pragma mark - 删除队列

• (void)removeTask:(NSURLSessionDataTask *)task
  {
  if ([self isRequesting]) {
  NSMutableDictionary * taskQueue = [self taskQueue];
  [taskQueue removeObjectForKey:@(task.taskIdentifier)];
  }
  }

pragma mark - 取消请求

• (void)cancelRequest
  {
  if ([self isRequesting]) {
  NSMutableDictionary * taskQueue = [self taskQueue];
  [taskQueue enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
  if (((NSURLSessionDataTask *)obj).state != NSURLSessionTaskStateCompleted ) {
  [((NSURLSessionDataTask *)obj) cancel];
  }
  }];

  }
  }

3.苹果要求必须https,需要自签名证书
其实用AF的话很简单

pragma mark - 设置证书

• (AFSecurityPolicy*)customSecurityPolicy
  {
  NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"证书名" ofType:@"cer"];
  NSData *certData = [NSData dataWithContentsOfFile:cerPath];
  AFSecurityPolicy *securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeCertificate];
  securityPolicy.allowInvalidCertificates = YES;
  securityPolicy.validatesDomainName = NO;
  securityPolicy.pinnedCertificates = [[NSSet alloc] initWithObjects:certData,nil];
  return securityPolicy;
  }

附上一个简单demo:https://github.com/zhen-li-xing/LZAFRequest.git