iOS 获取已连接的wifi信息

转：http://blog.youkuaiyun.com/marujunyy/article/details/16843173

首先需要   #import <SystemConfiguration/CaptiveNetwork.h>

[cpp] view plain copy

1. + (id)fetchSSIDInfo  
2. {  
3.     NSArray *ifs = (id)CNCopySupportedInterfaces();  
4.     NSLog(@"%s: Supported interfaces: %@", __func__, ifs);  
5.     id info = nil;  
6.     for (NSString *ifnam in ifs) {  
7.         info = (id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);  
8.         NSLog(@"%@ => %@", ifnam, info);  
9.         if (info && [info count]) { break; }  
10.         [info release];  
11.     }  
12.     [ifs release];  
13.     return [info autorelease];  
14. }  

ARC 版本：

[cpp] view plain copy

1. + (id)fetchSSIDInfo {  
2.     NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();  
3.     NSLog(@"%s: Supported interfaces: %@", __func__, ifs);  
4.     id info = nil;  
5.     for (NSString *ifnam in ifs) {  
6.         info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);  
7.         NSLog(@"%@ => %@", ifnam, info);  
8.         if (info && [info count]) { break; }  
9.     }  
10.     return info;  
11. }  

转载于:https://www.cnblogs.com/jackljf/p/4768603.html