获取wifimac的几种方式

获取wifimac的几种方式

1. 通过WifiManager进行获取

    @RequiresPermission(Manifest.permission.ACCESS_WIFI_STATE)
    public static String getWifiMacForWifiManager(Context context) {
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
        if (null == wifiInfo) {
            return "02:00:00:00:00:00";
        }
        String mac = wifiInfo.getMacAddress();
        if (null == mac || mac.length() == 0) {
            return "02:00:00:00:00:00";
        }
        return mac;
    }

2. 通过读取wlan0获取

    @RequiresPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
    public static String getWifiMacForWlan0() {
        String result = "";
        try {
            File file = new File("/sys/class/net/wlan0/address");
            BufferedReader reader = new BufferedReader(new FileReader(file));
            result = reader.readLine();
            reader.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

3. 通过NetworkInterface获取

    public static String getWifiMacForNetworkInterface() {
        String result = "";
        try {
            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {
                NetworkInterface networkInterface = networkInterfaces.nextElement();
                if (TextUtils.equals("wlan0", networkInterface.getName())) {
                    byte[] buffer = networkInterface.getHardwareAddress();
                    StringBuilder address = new StringBuilder();
                    for (byte b : buffer) {
                        address.append(String.format("%02X:", b));
                    }
                    address.deleteCharAt(address.lastIndexOf(":"));
                    result = address.toString().toLowerCase();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }