iOS 网络监测

iOS网络监测，监测单个页面写在ViewController里，监测全部写在AppDelegate中，而且不用终止

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

//根据主机名判断网络是否连接

self.reach = [Reachability reachabilityWithHostName:@"www.baidu.com"];

//注册网络监听通知

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(kReachabilityChanged) name:kReachabilityChangedNotification object:nil];

//开启监听

[self.reach startNotifier];

}

-(void)kReachabilityChanged{

switch (self.reach.currentReachabilityStatus) {

case NotReachable:

NSLog(@"没有网");

break;

case ReachableViaWiFi:

NSLog(@"wifi");

break;

case ReachableViaWWAN:

NSLog(@"移动蜂窝网");

break;

default:

NSLog(@"未知网络");

break;

}

}

-(void)dealloc{

//把当前的对象所有通知删除

[[NSNotificationCenter defaultCenter] removeObserver:self];

//停止监听

[self.reach stopNotifier];

}