iOS 获取Wifi的SSID及MAC地址

#import <UIKit/UIKit.h>

@interface ZJWifiTool : NSObject

+(NSString *)fetchIdWithType:(NSString *)wifiIdType;

@end

UIKIT_EXTERN NSString *const WifiIdTypeNotFound;
UIKIT_EXTERN NSString *const WifiIdTypeSSID;
UIKIT_EXTERN NSString *const WifiIdTypeBSSID;

#import "ZJWifiTool.h"
#import <SystemConfiguration/CaptiveNetwork.h>

NSString *const WifiIdTypeNotFound = @"Not Found";
NSString *const WifiIdTypeSSID     = @"SSID";   //Wifi SSID
NSString *const WifiIdTypeBSSID    = @"BSSID";  //mac

@implementation ZJWifiTool

+(NSString *)fetchIdWithType:(NSString *)wifiIdType
{
    NSString *idStr = WifiIdTypeNotFound;
    CFArrayRef myArray = CNCopySupportedInterfaces();
    if (myArray != nil) {
        CFDictionaryRef myDict = CNCopyCurrentNetworkInfo(CFArrayGetValueAtIndex(myArray, 0));
        if (myDict != nil) {
            NSDictionary *dict = (NSDictionary*)CFBridgingRelease(myDict);
            idStr = [dict valueForKey:wifiIdType];
        }
    }
    return idStr;
}

@end