Flutter：常见的页面布局：上边内容可滚动，底部固定一个按钮

常见的布局，内容区域可滚动，底部固定按钮

import 'package:flutter/material.dart';
import 'package:flutter_aidishi/extension/index.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:tdesign_flutter/tdesign_flutter.dart';
import 'package:flutter_swiper_null_safety/flutter_swiper_null_safety.dart';
import 'index.dart';class GoodsDetailPage extends GetView<GoodsDetailController> {const GoodsDetailPage({super.key});//  轮播图Widget _buildBanner() {return Container(width: 375.w,height: 500.w,color: Colors.blue,child: Text("轮播图"),);}// 商品信息Widget _buildGoodsName() {return Container(width: 375.w,height: 500.w,color: Colors.blue,child: Text("商品信息"),);}// 商品详情Widget _buildGoodsDetail() {return Container(width: 375.w,height: 500.w,color: Colors.blue,child: Text("商品详情"),);}// 底部悬浮按钮Widget _buildGoodsFoot() {return Container(width: 375.w,height: 50.w,color: Colors.white,child: Text("底部悬浮按钮"),);}// 顶部的可滚动内容：SingleChildScrollViewWidget _buildTop(){return SingleChildScrollView(child: <Widget>[_buildBanner(),SizedBox(height: 15.w,),_buildGoodsName(),_buildGoodsDetail(),].toColumn(),);}// 主视图Widget _buildView() {return <Widget>[_buildTop().expanded(),_buildGoodsFoot()].toColumn();}@overrideWidget build(BuildContext context) {return GetBuilder<GoodsDetailController>(init: GoodsDetailController(),id: "goods_detail",builder: (_) {return Scaffold(appBar: AppBar(title: const Text("goods_detail")),body: _buildView(),backgroundColor: Color(0xffF6F6F6),);},);}
}