如何添加具有onClick约束的EditText

Question

我正在尝试根据用户输入来计算平均值。现在，我已经掌握了基础知识。但是我想在单击addGradeButton时添加2个具有约束的EditText。我已经搜索了一个小时的观看时间，但是找不到任何可以做的事情。总的来说有人可以帮助我。

欢迎任何解释或提示等！

screenshot

final TextView averageView = findViewById(R.id.averageView); 
final String averageText = getString(R.string.average); 
final Button calculateButton = findViewById(R.id.calculateAverageButton); 
final Button addGradeButton = findViewById(R.id.addGradeButton)

calaculateButton.setOnClickListener(new View.onClickListener() { 
    @SupressLint("SetTextI18n")                                                     
    public void onClick(View v) { 

        double grade[]  = {Double.parseDouble(((EditText) findViewById(R.id.grade1)).getText().toString()); 

        double weight[] = {Double.parseDouble(((EditText) findViewById(R.id.weight1)).getText().toString()); 

        double weightTotal = weight[0]; double sum = grade[0] * weight[0] 

        double average = sum / weightTotal 

        @SuppressLint("DefaultLocale") String averageResult = String.format(%.2f, average);

        averageView.setText(averageText + " " + averageResult);