判断网络状态

// 判断网络状态
[self createNetWork];

- (void) createNetWork {
AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];

[manager startMonitoring];
[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

[self showNetWorkWithStatus:status];
}]l;
}

- (void) showNetWorkWithStatus:(NSInteger)status {
NSString *str;
switch (status) {
case AFNetworkReachabilityStatusUnknown:
str = @"未知网络";
break;
case AFNetworkReachabilityStatusReachableViawWWAN:
str = @"网络已连接";
break;
case AFNetworkReachabilityStatusNotReachable:
str = @"网络未连接";
break;
case AFNetworkReachabilityStatusReachableViaWiFi:
str = @"WIFI已连接";
break;
default:
break;
}
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"当前网络状态" message:str delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alert show];
}