iOS--------擷取當前串連的WiFi以及IP地址，ios--------wifi

iOS--------擷取當前串連的WiFi以及IP地址，ios--------wifi

匯入標頭檔

#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"];}