flutter - 如何删除默认导航路线动画

Question

我在颤振文档中给出的页面路由代码下方

// Within the `FirstRoute` widget
onPressed: () {
  Navigator.push(
    context,
    MaterialPageRoute(builder: (context) => SecondRoute()),
  );
}

但它在推送和弹出路线时提供了一些动画。

对于Android，页面的入口过渡将页面向上滑动并淡入。退出过渡是相同的，但相反。

过渡适应平台，在 iOS 上，页面从右侧滑入并反向退出。当另一页进入以覆盖它时，该页也会以视差向左移动。（这些方向在具有从右到左阅读方向的环境中翻转。）

有没有办法在没有任何动画的情况下路由到下一页？

编辑： 请检查整个代码：

class MyApp extends StatelessWidget {
  final routes = <String, WidgetBuilder>{
    SecondRoute.tag: (context) => SecondRoute(),
  };

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Flutter Routes",
      home: new FirstRoute(),
      routes: routes,
      onGenerateRoute: (routeSettings) {
        if (routeSettings.name == SecondRoute.tag)
          return PageRouteBuilder(pageBuilder: (_, a1, a2) => SecondRoute());

        return null;
      },
    );
  }
}

class FirstRoute extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('First Route'),
      ),
      body: Center(
        child: RaisedButton(
          child: Text('Open route'),
          onPressed: () {
            Navigator.of(context).pushNamed(SecondRoute.tag);

          },
        ),
      ),
    );
  }
}

class SecondRoute extends StatelessWidget {
  static String tag = 'second-route';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Second Route"),
      ),
      body: Center(
        child: RaisedButton(
          onPressed: () {
            Navigator.pop(context);
          },
          child: Text('Go back!'),
        ),
      ),
    );
  }
}

Answer 1

• 为了Navigator.push(...)

  Navigator.push(
    context,
    PageRouteBuilder(pageBuilder: (_, __, ___) => SecondRoute()),
  )
  

• 为了Navigator.pushNamed(...)

  首先，将此添加到您的MaterialApp

  MaterialApp(
    onGenerateRoute: (settings) {
      if (settings.name == '/second') 
        return PageRouteBuilder(pageBuilder: (_, __, ___) => SecondRoute());
  
      return null;
    },
  )
  

  现在，您可以使用：

  Navigator.pushNamed(context, '/second');
  

Answer 2

动画由MaterialPageRoute. 如果你不想要它，简单地使用别的东西：

Navigator.push(
  context,
  PageRouteBuilder(pageBuilder: (_, __, ___) => MyRoute()),
)

Answer 3

用这个替换你MyApp的。

class MyApp extends StatelessWidget {
  final routes = <String, WidgetBuilder>{SecondRoute.tag: (context) => SecondRoute()};

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Flutter Routes",
      home: new FirstRoute(),
      onGenerateRoute: (routeSettings) {
        if (routeSettings.name == SecondRoute.tag)
          return PageRouteBuilder(
            pageBuilder: (_, a1, a2) => FadeTransition(opacity: a1 ,child: SecondRoute()),
            transitionDuration: Duration(seconds: 5),
          );

        return null;
      },
    );
  }
}

Answer 4

由于 Flutter 现在正在迁移到 Navigator 2.0 以获得更多支持，我建议查看他们的迁移指南，了解如何将 TransitionDelegate 添加到 Navigator。将此类的实例添加到您的导航器以实现预期结果：

import 'package:flutter/widgets.dart';

class NoAnimationTransitionDelegate extends TransitionDelegate<void> {
  @override
  Iterable<RouteTransitionRecord> resolve({
    List<RouteTransitionRecord> newPageRouteHistory,
    Map<RouteTransitionRecord, RouteTransitionRecord> locationToExitingPageRoute,
    Map<RouteTransitionRecord, List<RouteTransitionRecord>> pageRouteToPagelessRoutes,
  }) {
    final List<RouteTransitionRecord> results = <RouteTransitionRecord>[];

    for (final RouteTransitionRecord pageRoute in newPageRouteHistory) {
      // Renames isEntering to isWaitingForEnteringDecision.
      if (pageRoute.isWaitingForEnteringDecision) {
        pageRoute.markForAdd();
      }
      results.add(pageRoute);

    }
    for (final RouteTransitionRecord exitingPageRoute in locationToExitingPageRoute.values) {
      // Checks the isWaitingForExitingDecision before calling the markFor methods.
      if (exitingPageRoute.isWaitingForExitingDecision) {
        exitingPageRoute.markForRemove();
        final List<RouteTransitionRecord> pagelessRoutes = pageRouteToPagelessRoutes[exitingPageRoute];
        if (pagelessRoutes != null) {
          for (final RouteTransitionRecord pagelessRoute in pagelessRoutes) {
            pagelessRoute.markForRemove();
          }
        }
      }
      results.add(exitingPageRoute);

    }
    return results;
   }
 }