如何获取wifi名称(SSID)

@import SystemConfiguration.CaptiveNetwork;

/** Returns first non-empty SSID network info dictionary.
*  @see CNCopyCurrentNetworkInfo */
- (NSDictionary *)fetchSSIDInfo
{
NSArray *interfaceNames = CFBridgingRelease(CNCopySupportedInterfaces());
NSLog(@"%s: Supported interfaces: %@", __func__, interfaceNames);

NSDictionary *SSIDInfo;
for (NSString *interfaceName in interfaceNames) {
SSIDInfo = CFBridgingRelease(
CNCopyCurrentNetworkInfo((__bridge CFStringRef)interfaceName));
NSLog(@"%s: %@ => %@", __func__, interfaceName, SSIDInfo);

BOOL isNotEmpty = (SSIDInfo.count > 0);
if (isNotEmpty) {
break;
}
}
return SSIDInfo;
}