iOS 判断是否连接wifi

+(BOOL)isWIFIConnection;

+(BOOL)isWIFIConnection

{

    BOOL ret = YES;

    struct ifaddrs * first_ifaddr, * current_ifaddr;

    NSMutableArray* activeInterfaceNames = [[NSMutableArray alloc] init];

    getifaddrs( &first_ifaddr );

    current_ifaddr = first_ifaddr;

    while( current_ifaddr!=NULL )

    {

        if( current_ifaddr->ifa_addr->sa_family==0x02 )

        {

            [activeInterfaceNames addObject:[NSString stringWithFormat:@"%s", current_ifaddr->ifa_name]];

        }

        current_ifaddr = current_ifaddr->ifa_next;

    }

    ret = [activeInterfaceNames containsObject:@"en0"] || [activeInterfaceNames containsObject:@"en1"];

    return ret;

}