iOS 网络监测之Reachability

1.注册通知
[[NSNotificationCenterdefaultCenter]addObserver:self selector:@selector(networkStateChange)name:kReachabilityChangedNotification object:nil];

// 创建

Reachability *reachability =[ReachabilityreachabilityForInternetConnection];

// 开始监控网络(一旦网络状态发生改变, 就会发出通知kReachabilityChangedNotification)[reachabilitystartNotifier];

2.监听方法

- (void)networkStateChange

{

// 1.检测网络状态

Reachability *wifi = [Reachability reachabilityForLocalWiFi];

// 2.检测手机是否能上网络

Reachability *connect = [Reachability reachabilityForInternetConnection];

// 3.判断网络状态

if ([wifi currentReachabilityStatus] != NotReachable) {

NSLog(@"有wifi");

}

else if ([connect currentReachabilityStatus] != NotReachable) {

NSLog(@"使用手机自带网络进行上网");

}

else {

NSLog(@"没有网络");

}

}```