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导入头文件
#import <ifaddrs.h> #import <arpa/inet.h> #import <systemconfiguration/captivenetwork.h>
核心代码：
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+ (nullable nsstring*)getcurrentlocalip
{
nsstring *address = nil;
struct ifaddrs *interfaces = null;
struct ifaddrs *temp_addr = null;
int success = 0;
// retrieve the current interfaces - returns 0 on success
success = getifaddrs(&interfaces);
if (success == 0) {
// loop through linked list of interfaces
temp_addr = interfaces;
while(temp_addr != null) {
if(temp_addr->ifa_addr->sa_family == af_inet) {
// check if interface is en0 which is the wifi connection on the iphone
if([[nsstring stringwithutf8string:temp_addr->ifa_name] isequaltostring:@"en0"]) {
// get nsstring from c string
address = [nsstring stringwithutf8string:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
}
}
temp_addr = temp_addr->ifa_next;
}
}
// free memory
freeifaddrs(interfaces);
return address;
}
+ (nullable nsstring *)getcurrewifissid {
nsarray *ifs = (__bridge_transfer id)cncopysupportedinterfaces();
nslog(@"supported interfaces: %@", ifs);
id info = nil;
for (nsstring *ifnam in ifs) {
info = (__bridge_transfer id)cncopycurrentnetworkinfo((__bridge cfstringref)ifnam);
nslog(@"%@ => %@", ifnam, info);
if (info && [info count]) { break; }
}
return [(nsdictionary*)info objectforkey:@"ssid"];
}
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