iOS中用来查询当前连接的网络信息的API即CNCopyCurrentNetworkInfo
这个API位于SystemConfiguration.framework里面，使用时需要增加.h和包含库文件
使用时可以直接包含
#import <SystemConfiguration/CaptiveNetwork.h>
代码如下：
+ (NSString *)getWifiName
{
NSString *wifiName =
nil;
CFArrayRef wifiInterfaces =
CNCopySupportedInterfaces();
if (!wifiInterfaces) {
return nil;
}
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);
wifiName = [networkInfo
objectForKey 
__bridge
NSString *)kCNNetworkInfoKeySSID];
CFRelease(dictRef);
}
}
CFRelease(wifiInterfaces);
return wifiName;
}