在如今的项目开发当中，监测网络是否正常很是有必要的。Reachability检测网络能够检测WiFi 3G 无线局域网网络
使用Reachabilityserver
下载Reachability，将Reachability添加到项目当中，在要检测网的类当中添加开发
#import <Reachability.h>it
// 开启网络状态的监听io
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil];class
self.reachability = [Reachability reachabilityWithHostName:@"www.baidu.com"];import
[self.reachability startNotifier];//开始监听object
在方法reachabilityChanged：中写改变网络要作的事select
//网络状态改变时调用方法下载
-(void)reachabilityChanged:(NSNotification *)note
{
Reachability *currReach = [note object];
NSParameterAssert([currReach isKindOfClass:[Reachability class]]);
self.status = [currReach currentReachabilityStatus];
self.isReachable = YES;
switch (self.status) {
case NotReachable:
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"网络状态" message:@"亲！没有网络哦！" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"肯定", nil];
[alertView show];
self.isReachable = NO;
}
break;
case ReachableViaWiFi:
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"网络状态" message:@"已链接WiFi！" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"肯定", nil];
[alertView show];
self.isReachable = YES;
}
break;
case ReachableViaWWAN:
{
self.isReachable = YES;
}
break;
default:
break;
}
}
也能够直接写在AppDelegate当中。