flutter SingleChildScrollView的使用

SingleChildScrollView相当于安卓的ScrollView,SizedBox是一个能指定宽高的盒子,一般默认占据主轴空间 import 'package:flutter/material.dart'; class Demo1 extends StatelessWidget{ @override Widget build(BuildContext context) { // TODO: implement build return Scaffold( appBar: AppBar( elevation: 0.0,