IOS - 总结（网络状态变更）

- (void)initNetworkMonitor

{

    NSURL *baseURL = [NSURL URLWithString:@"http://www.baidu.com/"];

    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];

    NSOperationQueue *operationQueue = manager.operationQueue;

    [[AFNetworkReachabilityManager sharedManager] startMonitoring];

    [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

        NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));

        static AFNetworkReachabilityStatus lastStatus = 2;

        switch (status) {

            case AFNetworkReachabilityStatusReachableViaWWAN:

            case AFNetworkReachabilityStatusReachableViaWiFi:

                [operationQueue setSuspended:NO];

                if (lastStatus == -1 || lastStatus == 0) {

                    [self showAlertTitle:@"提醒：" message:@"当前网络已连接，网络状态良好！"];

                }

                break;

            case AFNetworkReachabilityStatusNotReachable:

            default:

                [operationQueue setSuspended:YES];

                if (lastStatus == 1 || lastStatus == 2) {

                    [self showAlertTitle:@"提醒：" message:@"当前网络不可用,请请稍后重试！"];

                }

                break;

        }

        lastStatus = status;

    }];

}

IOS - 总结（网络状态变更）

原文：http://www.cnblogs.com/tx8899/p/3972801.html