Flutter 可编辑文本输入

import 'package:flutter/material.dart';

class TaskBox extends StatefulWidget {
  const TaskBox({Key? key}) : super(key: key);

  @override
  State<TaskBox> createState() => _TaskBoxState();
}

class _TaskBoxState extends State<TaskBox> {
  bool _isEditingText = false;
  late TextEditingController _editingController;
  String initialText = "Initial Text";

  @override
  void initState() {
    super.initState();
    _editingController = TextEditingController(text: initialText);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: _editTitleTextField(),
      ),
    );
  }

  _editTitleTextField() {
    if (_isEditingText) {
      return Center(
        child: TextField(
          onSubmitted: (newValue) {
            setState(() {
              initialText = newValue;
              _isEditingText = false;
            });
          },
          autofocus: true,
          controller: _editingController,
        ),
      );
    }
    return InkWell(
      onTap: () {
        setState(() {
          _isEditingText = true;
        });
      },
      child: Text(
        initialText,
        style: const TextStyle(
          color: Colors.black,
          fontSize: 18.0,
        ),
      ),
    );
  }
}