iphone 平台下判断wifi连接

 

#include <ifaddrs.h>
#include <arpa/inet.h>

 

 

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"];
[activeInterfaceNames release];
return ret;
}