导入头文件

#import <ifaddrs.h>
#import <arpa/inet.h>
#import <SystemConfiguration/CaptiveNetwork.h>

+ (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"];
}

iOS--------获取当前连接的WiFi以及IP地址