《Flutter 实战开发旅行社交手机APP》第一章 广场模块 1.7 小结

返回顶部

封装的返回顶部小部件
lib/utils/back_to_top.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
class BackToTop extends StatefulWidget {
   
   
  final ScrollController controller;