#import <SystemConfiguration/SystemConfiguration.h>

#import <SystemConfiguration/CaptiveNetwork.h>

-(NSString *)getWifiName

{
    NSString *wifiName = nil;
    
    CFArrayRef wifiInterfaces = CNCopySupportedInterfaces();
    
    
    if (!wifiInterfaces) {
        return @"unknow";
        
    }
    
    
    NSArray *interfaces = (__bridge NSArray *)wifiInterfaces;
    
    for (NSString *interfaceName in interfaces) {
        CFDictionaryRef dictRef = CNCopyCurrentNetworkInfo((__bridge CFStringRef)(interfaceName));
        
        if (dictRef) {
            NSDictionary *networkInfo = (__bridge NSDictionary *)dictRef;
            
            NSLog(@"network info -> %@", networkInfo);
           //networkInfo为一个字典，包含Wi-Fi名字、Mac 地址、信号强度

            wifiName = [networkInfo objectForKey:(__bridge NSString*)kCNNetworkInfoKeySSID];
            CFRelease(dictRef); 
          } 
      } 
     CFRelease(wifiInterfaces); 
     return wifiName; 
}