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;

}