以太网MAC地址获得 android

最新推荐文章于 2025-01-15 06:15:00 发布

wufen1103

最新推荐文章于 2025-01-15 06:15:00 发布

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本文提供了一种在Java中获取设备本地IP地址和MAC地址的方法。通过枚举网络接口来寻找非回环且不含冒号的有效IP地址，并进一步获取对应的MAC地址。

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<uses-permission android:name="android.permission.INTERNET"></uses-permission>

    protected InetAddress getLocalInetAddress() {
        InetAddress ip = null;
        try {
            Enumeration<NetworkInterface> en_netInterface = NetworkInterface.getNetworkInterfaces();
            while (en_netInterface.hasMoreElements()) {
                NetworkInterface ni = (NetworkInterface) en_netInterface.nextElement();
                Enumeration<InetAddress> en_ip = ni.getInetAddresses();
                while (en_ip.hasMoreElements()) {
                    ip = en_ip.nextElement();
                    if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1)
                        break;
                    else
                        ip = null;
                }

                if (ip != null) {
                    break;
                }
            }
        } catch (SocketException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return ip;
    }

    protected String getMacAddress() /* throws UnknownHostException */{
        String strMacAddr = null;
        try {
            InetAddress ip = getLocalInetAddress();

            byte[] b = NetworkInterface.getByInetAddress(ip).getHardwareAddress();
            StringBuffer buffer = new StringBuffer();
            for (int i = 0; i < b.length; i++) {
                if (i != 0) {
                    buffer.append('-');
                }

                String str = Integer.toHexString(b[i] & 0xFF);
                buffer.append(str.length() == 1 ? 0 + str : str);
            }
            strMacAddr = buffer.toString().toUpperCase();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return strMacAddr;
    }