Flutter推送到新页面，带有过渡效果，导致上一页不断推后

Question

我可以知道这个效果调用是什么吗？是否有插件可以在 flutter pub dev 中实现类似的功能，或者我们是否需要在页面路由构建器上进行一些自定义？谢谢你。

Answer 1

您可以检查一下吗？

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Home Page'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            Navigator.of(context).push(_customPageRoute(NextPage()));
          },
          child: Text('Go to Next Page'),
        ),
      ),
    );
  }
}

class NextPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Next Page'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            Navigator.of(context).pop();
          },
          child: Text('Go Back'),
        ),
      ),
    );
  }
}

PageRouteBuilder _customPageRoute(Widget page) {
  return PageRouteBuilder(
    pageBuilder: (context, animation, secondaryAnimation) => page,
    transitionsBuilder: (context, animation, secondaryAnimation, child) {
      const begin = Offset(0.0, 1.0);
      const end = Offset.zero;
      const curve = Curves.easeInOut;

      var tween = Tween(begin: begin, end: end).chain(CurveTween(curve: curve));
      var offsetAnimation = animation.drive(tween);

      return SlideTransition(
        position: offsetAnimation,
        child: child,
      );
    },
  );
}