如何在Android上动态创建的编辑文本上设置焦点更改侦听器？

Question

我想在我的应用程序上动态创建两个字段TextView和一个EditField。现在，它通过setOnClickListener通过一个按钮成功发生。当按下按钮时，TextView和EditField会在另一个的底部创建。部分代码如下：

MainActivity.java

    public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
        private GridLayout mlayout;
        Button additem;
        DynamicViews dnv;
        Context context;
        int f=0;
        int counter = 2;
        View view;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            mlayout = (GridLayout) findViewById(R.id.mylayout);
            additem = (Button) findViewById(R.id.addButton);

            additem.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    addView(view);
                    counter+=2;
                }
            });
        }
        public void addView (View view)
        {
            this.view=view;
            f=f+1;
            dnv = new DynamicViews(context);
            mlayout.addView(dnv.descriptopionTextView(getApplicationContext(),Integer.toString(f)),counter);
            mlayout.addView(dnv.receivedQuantityEditText(getApplicationContext()),counter+1);

        }

DynamicViews.java

public class DynamicViews {
    Context ctx;

    public DynamicViews(Context ctx) {
        this.ctx = ctx;
    }

    public TextView descriptopionTextView(Context context,String text) {

        final ViewGroup.LayoutParams lParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        final TextView textView = new TextView(context);
        textView.setLayoutParams(lParams);
        textView.setTextSize(16);
        textView.setTypeface(null, Typeface.BOLD);
        textView.setTextColor(Color.rgb(255,255,255));
        textView.setText(" "+ text+". ");

        return textView;

    }

    public EditText receivedQuantityEditText(Context context) {

        final ViewGroup.LayoutParams lParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        final EditText editText = new EditText(context);
        int id = 0;
        editText.setId(id);
        editText.setTextSize(16);
        editText.setTextColor(Color.rgb(255,255,255));
        editText.setInputType(TYPE_CLASS_NUMBER);
        return editText;

    }
}

每次用户在动态创建的最后一个TextView上按下Enter键时，如何创建新的两个字段EditField和EditField，并且该字段不为空？