How to get value of Checkbox and save in Array?

I have a checkbox like this:

LinearLayout layout = findViewById(R.id.lyLayout);
CheckBox checkBox;

for (int i = 0; i < items.size(); i++) {
    checkBox = new CheckBox(getBaseContext());
    checkBox.setId(View.generateViewId());
    checkBox.setText(items.get(i).getDesk());
    layout.addView(checkBox); 
}

and I want to get checked data, I do this :

ArrayList<String> checkedBox = new ArrayList<>();
checkBox.setOnCheckedChangeListener((buttonView, isChecked) -> 
    {
        for (int a = 0; a < layout.getChildCount(); a++) {
        checkBox = (CheckBox) layout.getChildAt(a);
        if (checkBox.isChecked()) {
        checkedBox.add(checkBox.getText().toString());
        Toast.makeText(getApplicationContext(), checkedBox.toString() + " checked", Toast.LENGTH_LONG).show();

        } else {
            checkedBox.remove(checkBox.getText().toString());
            Toast.makeText(getApplicationContext(), checkedBox.toString() + " checked", Toast.LENGTH_LONG).show();
            }
        }
    });

but the captured data is only at index 0. Other than that, the data is not stored. And sometimes the data is not stored at all.