IOS测试网络状态

      /第一次打开时判断网络状态
      - (int) connectedToNetwork
      {
          NSString *kindStr;
          int kind;
          //创建零地址，0.0.0.0的地址表示查询本机的网络连接状态
          struct sockaddr_in zeroAddress;
          bzero(&zeroAddress, sizeof(zeroAddress));
          zeroAddress.sin_len = sizeof(zeroAddress);
          zeroAddress.sin_family = AF_INET;
          // Recover reachability flags
          SCNetworkReachabilityRef defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&zeroAddress);
          SCNetworkReachabilityFlags flags;
          //获得连接的标志
          BOOL didRetrieveFlags = SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags);
          CFRelease(defaultRouteReachability);
          //如果不能获取连接标志，则不能连接网络，直接返回
          if (!didRetrieveFlags)
          {
              kindStr = @"获取信息失败";
              kind = -1;
          }
          else{
              //根据获得的连接标志进行判断
              BOOL isReachable = flags & kSCNetworkFlagsReachable;
              BOOL needsConnection = flags & kSCNetworkFlagsConnectionRequired;
              if((isReachable && !needsConnection)==YES)
              {
                  ///能够连接网络
                  if((flags& kSCNetworkReachabilityFlagsIsWWAN)==kSCNetworkReachabilityFlagsIsWWAN)
                  {
                      kindStr = @"手机网络";
                      kind = 0;
                  }
                  else
                  {
                      kindStr =@"wifi连接网络";
                      kind = 1;
                  }
              }
              else{
                  kindStr =@"不能连接网络";
                  kind = -1;
              }
          }
          return kind;
      }
      设置网络监听
      -(void)SetJianCeNetwork
      {
          //开启网络状况的监听
          [[NSNotificationCenter defaultCenter] addObserver:self
                                                   selector:@selector(reachabilityChanged:)
                                                       name: kReachabilityChangedNotification
                                                     object: nil];
          hostReach = [[Reachability reachabilityWithHostname:@"www.xtox.net"] retain];//可以以多种形式初始化
          [hostReach startNotifier];  //开始监听,会启动一个run loop
      }
      // 连接改变
      - (void) reachabilityChanged: (NSNotification* )note
      {
          Reachability* curReach = [note object];
          NSParameterAssert([curReach isKindOfClass: [Reachability class]]);
          [self updateInterfaceWithReachability: curReach];
      }
      //处理网络连接改变后的情况
      - (void) updateInterfaceWithReachability: (Reachability*) curReach
      {
          //对连接改变做出响应的处理动作。
          NetworkStatus status = [curReach currentReachabilityStatus];
          if (status == NotReachable)
          {  //没有连接到网络就弹出提实况
              isNetType = -1;
              UIAlertView *alert =[[UIAlertView alloc]initWithTitle:nil message:@"网络连接失败,请检查网络" delegate:self cancelButtonTitle:@"确定" otherButtonTitles: nil];
              [alert show];
              [alert release];
          }
          else if(status == ReachableViaWiFi ||status == ReachableViaWWAN)
          {
              if(status == ReachableViaWWAN)
              {
                  isNetType = 0;
              }
              else if(status == ReachableViaWiFi)
              {
                  isNetType = 1;
              }
              //
              NSThread *initThread = [[NSThread alloc]initWithTarget:self selector:@selector(InitThreadFunc:) object:self];
              [initThread start];
              return;
          }
      }
      -(void)InitThreadFunc:(id)sender
      {
          //isNetType = [self connectedToNetwork];
          if(isNetType!=-1)
          {
              if([g_json Test]==YES)
              {
                 [g_json UserLogin:0 pass:nil];
                  [self GetUpdate];
                  return;
              }
              else
              {
                  isNetType = -1;
              }
          }
      }
  
 

  
 
 

文章来源: zzzili.blog.csdn.net，作者：清雨小竹，版权归原作者所有，如需转载，请联系作者。

原文链接：zzzili.blog.csdn.net/article/details/8695213