检测网络

1.导入：Reachability  文件

2.导入：Reachability的头文件

 

3.复制代码：

+ (BOOL) isConnectionAvailable{

   
    BOOL isExistenceNetwork = YES;
    Reachability *reach = [Reachability reachabilityWithHostName:@"www.apple.com"];
    switch ([reach currentReachabilityStatus]) {
        case NotReachable:
            isExistenceNetwork = NO;
            //NSLog(@"notReachable");
            break;
        case ReachableViaWiFi:
            isExistenceNetwork = YES;
            //NSLog(@"WIFI");
            break;
        case ReachableViaWWAN:
            isExistenceNetwork = YES;
            //NSLog(@"3G");
            break;
    }
   
    if (!isExistenceNetwork) {
        [YZTools toastMake:@"没有网络" isPush:NO];
        return NO;
    }
   
    return isExistenceNetwork;

}