将相同的数据添加到列表中，扫描QR Code google vison

Question

我用来扫描Qr Code Google Vison，但我有一点问题。扫描QR码时 它会自动为我保存几个对象。如何扫描QR码读取一个数据。

例如：

我的班级员工

模型对象员工

public class Employee {

    private String firstName;
    private String lastName;
    private String age;

    public Employee(String firstName, String lastName, String age) {
        super();
        this.firstName = firstName;
        this.lastName = lastName;
        this.age = age;
    }


    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

}

ScanQrCode.class

读取扫描Qr代码的方法

private ArrayList<Employee> employeeList = new ArrayList<Employee>();

...

//这个带有QR码读取值的方法

 @Override
            public void receiveDetections(Detector.Detections<Barcode> detections) {
                final SparseArray<Barcode> barcodes = detections.getDetectedItems();
                if (barcodes.size() != 0) text.post(new Runnable() {
                    @Override
                    public void run() {

                        Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
                        vibrator.vibrate(400);

String name,lastname,age;
String[] dataEmployee = new String[3];
barcodeString = barcodes.valueAt(0).displayValue;

 Pattern p = Pattern.compile("<z[0-9]>(.+?)</z[0-9]>");

      if (p.matcher(barcodeString).matches()) {
          Matcher m = p.matcher(barcodeString);
                 while (m.find()) {
                      dataEmployee[index] = m.group(1);
                      index++;
                  }
name = dataEmployee[0];
lastname = dataEmployee[1];
age = dataEmployee[2];


Employee empmoo = new Employee(name,lastname,age);

employeeList.add(empmoo);
}