文本字段中的文本被键盘覆盖

Question

当单击添加按钮时，底部工作表正在显示，当单击写入文本字段时，我有一个文本字段隐藏在键盘后面。 那我能做什么？ 我尝试使用 SingleChildScrollView 但没有用

检查图片和代码：

import 'dart:ui';

import 'package:flutter/material.dart';

class AddTaskScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      color: Color(0xff757575),
      child: Container(
        padding: EdgeInsets.only(top: 20, left: 50, right: 50),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Center(
              child: Text(
                'Add Task',
                style: TextStyle(
                    color: Colors.lightBlueAccent,
                    fontSize: 40,
                    fontWeight: FontWeight.w500),
              ),
            ),
            TextField(
              textAlign: TextAlign.center,
              cursorColor: Colors.lightBlueAccent,
              decoration: InputDecoration(fillColor: Colors.red),
              autofocus: true,
            ),
            SizedBox(
              height: 20,
            ),
            FlatButton(
              color: Colors.lightBlueAccent,
              onPressed: () {
                print('');
              },
              child: Text(
                'Add',
                style: TextStyle(fontSize: 20, color: Colors.white),
              ),
            )
          ],
        ),
        decoration: BoxDecoration(
            color: Colors.white,
            borderRadius: BorderRadius.only(
                topLeft: Radius.circular(20), topRight: Radius.circular(20))),
      ),
    );
  }
}