Android获取设备的 mac 地址

Android获取设备的 mac 地址

直接上代码，方法很简单，一般默认是优先获取有线网络eth0，如果没有有线网络的mac地址再获取无线网络的；实际开发中，设备的mac地址的可以用于设备授权的认证，数据的推送识别等等

  /**
     * eth0 MAC地址获取，适用api9 - api24
     */
    public static String getEth0Mac() {

        String Mac = "";
        try {
            List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface nif : all) {
                if (!nif.getName().equalsIgnoreCase("eth0")) continue;

                byte[] macBytes = nif.getHardwareAddress();
                if (macBytes == null) {
                    return "Didn\'t get eth0 MAC address";
                }
                StringBuilder res1 = new StringBuilder();
                for (byte b : macBytes) {
                    res1.append(String.format("%02X:", b));
                }
                if (res1.length() > 0) {
                    res1.deleteCharAt(res1.length() - 1);
                    Mac = res1.toString();
                }
                return Mac;
            }
        } catch (Exception ex) {
        }
        return "Didn\'t get eth0 MAC address";
    }

    /**
     * wlan0 MAC地址获取，适用api9 - api24
     */
    public static String getWlan0Mac() {

        String Mac = "";
        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 "Didn\'t get Wlan0 MAC address";
                }
                StringBuilder res1 = new StringBuilder();
                for (byte b : macBytes) {
                    res1.append(String.format("%02X:", b));
                }

                if (res1.length() > 0) {
                    res1.deleteCharAt(res1.length() - 1);
                    Mac = res1.toString();
                }
                return Mac;
            }
        } catch (Exception ex) {
        }
        return "Didn\'t get Wlan0 address";
    }

    /**
     * 取得 Mac-Address
     * 1. 先取得 eth0 Mac-Address
     * 2. 再取得 wlan0 Mac-Address
     *
     * @return
     */
    public static String getDeviceMacAddress() {
        String mac = !getEth0Mac().equals("Didn\'t get eth0 MAC address") ? getEth0Mac() : getWlan0Mac();
        return mac;
    }