android获取MAC地址

1、测试版本：Android 10

2、添加权限

<!-- 授予程序访问网络的权限-->
    <uses-permission android:name="android.permission.INTERNET"/>

3、获取方法

/**
     * 获取MAC地址
     */
    public static String getMacAddress() {
        try {
            // 把当前机器上访问网络的接口存入 List集合中
            List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface nif : all) {
                if (!"wlan0".equalsIgnoreCase(nif.getName())) {
                    continue;
                }
                byte[] macBytes = nif.getHardwareAddress();
                if (macBytes == null || macBytes.length == 0) {
                    continue;
                }
                StringBuilder result = new StringBuilder();
                for (byte b : macBytes) {
                    //每隔两个字符加一个:
                    result.append(String.format("%02X:", b));
                }
                if (result.length() > 0) {
                    //删除最后一个:
                    result.deleteCharAt(result.length() - 1);
                }
                return result.toString();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "Unknown";
    }

或者是

public static String macAddress() throws SocketException {
        String address = null;
        // 把当前机器上访问网络的接口存入 Enumeration集合中
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        Log.d("TEST_BUG", " interfaceName = " + interfaces );
        while (interfaces.hasMoreElements()) {
            NetworkInterface netWork = interfaces.nextElement();
            // 如果存在硬件地址并可以使用给定的当前权限访问，则返回该硬件地址（通常是 MAC）。
            byte[] by = netWork.getHardwareAddress();
            if (by == null || by.length == 0) {
                continue;
            }
            StringBuilder builder = new StringBuilder();
            for (byte b : by) {
                builder.append(String.format("%02X:", b));
            }
            if (builder.length() > 0) {
                builder.deleteCharAt(builder.length() - 1);
            }
            String mac = builder.toString();
            Log.d("TEST_BUG", " interfaceName ="+netWork.getName()+", mac="+mac);
            // 从路由器上在线设备的MAC地址列表，可以印证设备Wifi的 name 是 wlan0
            if (netWork.getName().equals("wlan0")) {
                address = mac;
                Log.d("TEST_BUG", " interfaceName ="+netWork.getName()+", address="+address);
            }
        }
        return address;
    }