Check for local wifi available

[rohit.arora]

Hi,

I am working o an application which uses wifi network to connect to internet. I am looking if there is anyway of retrieving a list of Wifi networks in area so that if user is not connected to wifi my app could prompt user to join any network from that list.
Is there anyway of retrieving a list of Wifi networks in area?

Thanks & Regards
Rohit Arora

[vikysaran]

Hope it will help you.
The code bellow checks only wi-fi connectivity...

+(BOOL)localWiFiAvailable
{
    struct ifaddrs *addresses;
    struct ifaddrs *cursor;
    BOOL wiFiAvailable = NO;
    if (getifaddrs(&addresses) != 0) return NO;
    
    cursor = addresses;
    while (cursor != NULL) {
        if (cursor -> ifa_addr -> sa_family == AF_INET
            && !(cursor -> ifa_flags & IFF_LOOPBACK)) // Ignore the loopback address
        {
            // Check for WiFi adapter
            if (strcmp(cursor -> ifa_name, "en0") == 0) {
                wiFiAvailable = YES;
                break;
            }
        }
        cursor = cursor -> ifa_next;
    }
    
    freeifaddrs(addresses);
    return wiFiAvailable;
}