获取当前网络状态

#pragma mark    - 判断网络状态
+ (void)netWork {
AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];
[manager startMonitoring];
[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
//        NSLog(@"呵哈%ld", status);
//        [self showNetWorkWithStatus:status];
NSString *str;
switch (status) {
case AFNetworkReachabilityStatusUnknown:
str = @"未知";
break;
case AFNetworkReachabilityStatusNotReachable:
str = @"未连接";
break;
case AFNetworkReachabilityStatusReachableViaWWAN:
str = @"已连接";
break;
case AFNetworkReachabilityStatusReachableViaWiFi:
str = @"Wifi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];
//    NSLog(@"哈哈哈%@", str);
[alert show];

}];
}