Android获取设备mac地址，获取序列号

public static String getMac(Context context){
    String mac = "";
    if(Build.VERSION.SDK_INT < Build.VERSION_CODES.M){
        mac = getMacDefault(context);
    }else if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M &&Build.VERSION.SDK_INT<=Build.VERSION_CODES.N){
        mac = getMacAddress();
    }else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
        mac = getMacFromHardware();
    }
    return mac;
}

/**
     * Android 6.0 之前（不包括6.0）获取mac地址
     * 必须的权限 <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
     * @param context * @return
     */
    private static String getMacDefault(Context context) {
        String mac = "";
        if (context == null) {
            return mac;
        }
        WifiManager wifi = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
        WifiInfo info = null;
        try {
            info = wifi.getConnectionInfo();
        } catch (Exception e) {
            e.printStackTrace();
        }

        if (info == null) {
            return null;
        }
        mac = info.getMacAddress();
        if (!TextUtils.isEmpty(mac)) {
            mac = mac.toUpperCase(Locale.ENGLISH);
        }
        return mac;
    }

    /**
     * Android 6.0-Android 7.0 获取mac地址
     */
    private static String getMacAddress() {
        String macSerial = null;
        String str = "";

        try {
            Process pp = Runtime.getRuntime().exec("cat/sys/class/net/wlan0/address");
            InputStreamReader ir = new InputStreamReader(pp.getInputStream());
            LineNumberReader input = new LineNumberReader(ir);

            while (null != str) {
                str = input.readLine();
                if (str != null) {
                    macSerial = str.trim();//去空格
                    break;
                }
            }
        } catch (IOException ex) {
            // 赋予默认值
            ex.printStackTrace();
        }

        return macSerial;
    }

/**
 * Android 7.0之后获取Mac地址
 * 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"></uses-permission>
 * @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 "02:00:00:00:00:00";
    }

//获取序列号，需要自己去申请权限

if(ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED){
    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_PHONE_STATE,Manifest.permission.READ_PRECISE_PHONE_STATE}, 1);
}else {
    getSerialNumber();
}

public static String getSerialNumber(){
    String serialNumber = "";
    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
        serialNumber = Build.getSerial();
    }else {
        serialNumber = Build.SERIAL;
    }
    return serialNumber;
}