如何在expandbleView的子视图中获取editText字符串值？

public class ExpandableAdapter extends BaseExpandableListAdapter {
    private HashMap<Integer, String> editTextValues; // 用于存储子视图EditText的字符串值

    // ... 其他适配器代码 ...

    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
        // 获取子视图布局
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.child_layout, parent, false);

        // 获取子视图的EditText
        EditText editText = view.findViewById(R.id.edit_text);

        // 为EditText添加TextWatcher监听器
        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                // do nothing
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // 将EditText的字符串值存储到数据结构中
                editTextValues.put(childPosition, s.toString());
            }

            @Override
            public void afterTextChanged(Editable s) {
                // do nothing
            }
        });

        return view;
    }

    // ... 其他适配器代码 ...

    // 获取子视图EditText的字符串值
    public String getEditTextValue(int childPosition) {
        return editTextValues.get(childPosition);
    }
}

ExpandableAdapter adapter = new ExpandableAdapter();

// 获取第一个子视图的EditText字符串值
String editTextValue = adapter.getEditTextValue(0);