mac地址获取

参考：https://www.jianshu.com/p/16d4ff4c4cbe

https://www.jb51.net/article/153245.htm

 

 

/**
 * 遍历循环所有的网络接口，找到接口是 wlan0
 * 必须的权限 <uses-permission android:name="android.permission.INTERNET" />
 *
 * @return
 */
private static String getMacFromHardware() {
    try {
        List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface nif : all) {
            if (!nif.getName().equalsIgnoreCase("wlan0")) continue;

            byte[] macBytes = nif.getHardwareAddress();
            if (macBytes == null) {
                return "";
            }

            StringBuilder res1 = new StringBuilder();
            for (byte b : macBytes) {
                res1.append(String.format("%02X:", b));
            }

            if (res1.length() > 0) {
                res1.deleteCharAt(res1.length() - 1);
            }
            return res1.toString();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "";
}

 

public static String getMacAddress() {
    /*获取mac地址有一点需要注意的就是android 6.0版本后，以下注释方法不再适用，不管任何手机都会返回"02:00:00:00:00:00"这个默认的mac地址，这是googel官方为了加强权限管理而禁用了getSYstemService(Context.WIFI_SERVICE)方法来获得mac地址。*/
    //    String macAddress= "";
    String macAddress = null;
    StringBuffer buf = new StringBuffer();
    NetworkInterface networkInterface = null;
    try {
        networkInterface = NetworkInterface.getByName("eth1");
        if (networkInterface == null) {
            networkInterface = NetworkInterface.getByName("wlan0");
        }
        if (networkInterface == null) {
            return "";
        }
        byte[] addr = networkInterface.getHardwareAddress();
        for (byte b : addr) {
            buf.append(String.format("%02X:", b));
        }
        if (buf.length() > 0) {
            buf.deleteCharAt(buf.length() - 1);
        }
        macAddress = buf.toString();
    } catch (SocketException e) {
        e.printStackTrace();
        return "";
    }
    return macAddress;
}