相关疑难解决方法(0)

因此，我正试图为一家杂乱无章的餐厅制作送货上门的应用程序，而我的英雄动画似乎无法正常工作。首先，我创建了一个初始屏幕，其中显示徽标，然后导航到该徽标应该进行英雄转换的主页。初始屏幕和主页位于两个独立的dart文件中。这是我的初始屏幕的代码：

import 'package:flutter/material.dart';
import 'home_page.dart';
import 'dart:async';

class Splash extends StatefulWidget {
  @override
  _SplashState createState() => new _SplashState();
}

class _SplashState extends State<Splash> with SingleTickerProviderStateMixin 
{

  Animation<double> _mainLogoAnimation;
  AnimationController _mainLogoAnimationController;

  @override
  void initState() {
    super.initState();
    goToHomePage();
    _mainLogoAnimationController = new AnimationController(duration: new Duration(milliseconds: 2500) ,vsync: this);
    _mainLogoAnimation = new CurvedAnimation(parent: 
    _mainLogoAnimationController, curve: Curves.easeIn);
    _mainLogoAnimation.addListener(() => (this.setState(() {})));
    _mainLogoAnimationController.forward();
  }

  Future goToHomePage() async {
    await new Future.delayed(const Duration(milliseconds: 4000));
    Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new HomePage()));
  }

  @override
  Widget build(BuildContext context) { …