AFNetWorking 监听网络连接的状态

来源：互联网发布：决战武林神兵进阶数据编辑：程序博客网时间：2024/04/25 09:00

</pre>在AFNetWorking中有找到AFNetworkReachabilityManager文件，这个文件中处理的都是很网络状态有关的。<p></p><p>其中有一个AFPostReachabilityStatusChange方法，这个方法每次网络状态发生改变时都会调用，所以我在这个方法中发送一个通知，接收到通知后可以根据网络状态判断。</p><p>下面是部分代码</p><p>首先是AFNetworkReachabilityManager文件中：</p><p></p><pre name="code" class="objc">static void AFPostReachabilityStatusChange(SCNetworkReachabilityFlags flags, AFNetworkReachabilityStatusBlock block) {    AFNetworkReachabilityStatus status = AFNetworkReachabilityStatusForFlags(flags);    dispatch_async(dispatch_get_main_queue(), ^{        if (block) {            block(status);        }        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];        NSDictionary *userInfo = @{ AFNetworkingReachabilityNotificationStatusItem: @(status) };        [notificationCenter postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil userInfo:userInfo];#warning 网络状态发生改变通知，全局监控网络        [notificationCenter postNotificationName:@"networking_monitoring_notification" object:nil userInfo:nil];    });}

通知的接收者写在了AppDelegate的didFinishLaunchingWithOptions中

- (void)netWorkMonitoring{    NSURL *baseURL = [NSURL URLWithString:@"http://baidu.com/"];    manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];    //开始监控    [manager.reachabilityManager startMonitoring];    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged) name:NETWORKING_MONITORING_NOTIFICATION object:nil];}- (void)reachabilityChanged{     NSOperationQueue *operationQueue = manager.operationQueue;     [manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {         switch (status) {             case AFNetworkReachabilityStatusReachableViaWWAN:             case AFNetworkReachabilityStatusReachableViaWiFi:                 [operationQueue setSuspended:NO];                 NSLog(@"----------网络已连接--------");                  break;             case AFNetworkReachabilityStatusNotReachable:                 NSLog(@"------------网络未连接--------");              default:                 [operationQueue setSuspended:YES];                 break;         }     }];}

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