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iPhone,iPad如何获取WIFI名称即SSID

分类: 文章 • 2025-03-16 17:32:45

2010年开始苹果清理了一批APP Store上的WIFI扫描软件, 缘由语焉不详.

这些WIFI扫描软件使用了苹果的私有函数apple80211.framework

尽管不能合法(指能通过App Store的审核)的获取WIFI列表, 不过我们还是可以获取到当前Wifi连接的信息,比如SSID.

SSID全称Service Set IDentifier, 即Wifi网络的公开名称.

苹果在IOS v4.1+版本上提供了公开的方法来获取该信息.

示范代码如下:

[plain]view plaincopy
  1. #import<SystemConfiguration/CaptiveNetwork.h>
  3. -(id)fetchSSIDInfo
  4. {
  5. NSArray*ifs=(id)CNCopySupportedInterfaces();
  6. NSLog(@"%s:Supportedinterfaces:%@",__func__,ifs);
  7. idinfo=nil;
  8. for(NSString*ifnaminifs){
  9. info=(id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);
  10. NSLog(@"%s:%@=>%@",__func__,ifnam,info);
  11. if(info&&[infocount]){
  12. break;
  13. }
  14. [inforelease];
  15. }
  16. [ifsrelease];
  17. return[infoautorelease];
  18. }

对于ARC版本, 代码可简化如下:

[plain]view plaincopy
  1. -(id)fetchSSIDInfo{
  2. NSArray*ifs=(__bridge_transferid)CNCopySupportedInterfaces();
  3. NSLog(@"Supportedinterfaces:%@",ifs);
  4. idinfo=nil;
  5. for(NSString*ifnaminifs){
  6. info=(__bridge_transferid)CNCopyCurrentNetworkInfo((__bridgeCFStringRef)ifnam);
  7. NSLog(@"%@=>%@",ifnam,info);
  8. if(info&&[infocount]){break;}
  9. }
  10. returninfo;
  11. }

参考链接:

1. http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library

2. http://answers.yahoo.com/question/index?qid=20100529040141AAKd8dO



SSID全称Service Set IDentifier, 即Wifi网络的公开名称.在IOS 4.1以上版本提供了公开的方法来获取该信息.

[html]view plaincopy
  1. #import<SystemConfiguration/CaptiveNetwork.h>

[html]view plaincopy
  1. -(id)fetchSSIDInfo
  2. {
  3. NSArray*ifs=(id)CNCopySupportedInterfaces();
  4. NSLog(@"%s:Supportedinterfaces:%@",__func__,ifs);
  5. idinfo=nil;
  6. for(NSString*ifnaminifs){
  7. info=(id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);
  8. if(info&&[infocount]){
  9. break;
  10. }
  11. [inforelease];
  12. }
  13. [ifsrelease];
  14. return[infoautorelease];
  15. }
  17. -(NSString*)currentWifiSSID{
  18. //Doesnotworkonthesimulator.
  19. NSString*ssid=nil;
  20. NSArray*ifs=(id)CNCopySupportedInterfaces();
  21. NSLog(@"ifs:%@",ifs);
  22. for(NSString*ifnaminifs){
  23. NSDictionary*info=(id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);
  24. NSLog(@"dici：%@",[infoallKeys]);
  25. if(info[@"SSIDD"]){
  26. ssid=info[@"SSID"];
  28. }
  29. }
  30. returnssid;
  31. }
  33. -(void)viewDidLoad
  34. {
  35. [superviewDidLoad];
  37. tempLabel=[[UILabelalloc]initWithFrame:CGRectMake(50,40,200,40)];
  38. tempLabel.textAlignment=NSTextAlignmentCenter;
  39. [self.viewaddSubview:tempLabel];
  40. NSDictionary*ifs=[selffetchSSIDInfo];
  41. NSString*ssid=[[ifsobjectForKey:@"SSID"]lowercaseString];
  42. tempLabel.text=ssid;
  44. }


log 信息 ：

[html]view plaincopy
  1. 2013-06-0521:39:14.357wifiNameDemo[9877:707]dici：{
  2. BSSID="f4:ec:38:40:cc:e8";
  3. SSID="Nice_Apple";
  4. SSIDDATA=<4e6963655f4170706c65>;
  5. }
  6. 2013-06-0521:39:14.360wifiNameDemo[9877:707]Nice_Apple

ARC 版本：

[html]view plaincopy
  1. -(id)fetchSSIDInfo{
  2. NSArray*ifs=(__bridge_transferid)CNCopySupportedInterfaces();
  3. NSLog(@"Supportedinterfaces:%@",ifs);
  4. idinfo=nil;
  5. for(NSString*ifnaminifs){
  6. info=(__bridge_transferid)CNCopyCurrentNetworkInfo((__bridgeCFStringRef)ifnam);
  7. NSLog(@"%@=>%@",ifnam,info);
  8. if(info&&[infocount]){break;}
  9. }
  10. returninfo;
  11. }

效果如下：

iPhone,iPad如何获取WIFI名称即SSID


[html]view plaincopy
  1. #import<SystemConfiguration/CaptiveNetwork.h>

[html]view plaincopy
  1. -(id)fetchSSIDInfo
  2. {
  3. NSArray*ifs=(id)CNCopySupportedInterfaces();
  4. NSLog(@"%s:Supportedinterfaces:%@",__func__,ifs);
  5. idinfo=nil;
  6. for(NSString*ifnaminifs){
  7. info=(id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);
  8. if(info&&[infocount]){
  9. break;
  10. }
  11. [inforelease];
  12. }
  13. [ifsrelease];
  14. return[infoautorelease];
  15. }
  17. -(NSString*)currentWifiSSID{
  18. //Doesnotworkonthesimulator.
  19. NSString*ssid=nil;
  20. NSArray*ifs=(id)CNCopySupportedInterfaces();
  21. NSLog(@"ifs:%@",ifs);
  22. for(NSString*ifnaminifs){
  23. NSDictionary*info=(id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);
  24. NSLog(@"dici：%@",[infoallKeys]);
  25. if(info[@"SSIDD"]){
  26. ssid=info[@"SSID"];
  28. }
  29. }
  30. returnssid;
  31. }
  33. -(void)viewDidLoad
  34. {
  35. [superviewDidLoad];
  37. tempLabel=[[UILabelalloc]initWithFrame:CGRectMake(50,40,200,40)];
  38. tempLabel.textAlignment=NSTextAlignmentCenter;
  39. [self.viewaddSubview:tempLabel];
  40. NSDictionary*ifs=[selffetchSSIDInfo];
  41. NSString*ssid=[[ifsobjectForKey:@"SSID"]lowercaseString];
  42. tempLabel.text=ssid;
  44. }


log 信息 ：

[html]view plaincopy
  1. 2013-06-0521:39:14.357wifiNameDemo[9877:707]dici：{
  2. BSSID="f4:ec:38:40:cc:e8";
  3. SSID="Nice_Apple";
  4. SSIDDATA=<4e6963655f4170706c65>;
  5. }
  6. 2013-06-0521:39:14.360wifiNameDemo[9877:707]Nice_Apple

ARC 版本：

[html]view plaincopy
  1. -(id)fetchSSIDInfo{
  2. NSArray*ifs=(__bridge_transferid)CNCopySupportedInterfaces();
  3. NSLog(@"Supportedinterfaces:%@",ifs);
  4. idinfo=nil;
  5. for(NSString*ifnaminifs){
  6. info=(__bridge_transferid)CNCopyCurrentNetworkInfo((__bridgeCFStringRef)ifnam);
  7. NSLog(@"%@=>%@",ifnam,info);
  8. if(info&&[infocount]){break;}
  9. }
  10. returninfo;
  11. }

效果如下：

iPhone,iPad如何获取WIFI名称即SSID

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