flutterflutter-pageview

Flutter PageView not swipeable on web (desktop mode)


I'm new to flutter. I implemented flutter PageView with the help of its documents:

/// Flutter code sample for PageView

// Here is an example of [PageView]. It creates a centered [Text] in each of the three pages
// which scroll horizontally.

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

/// This is the main application widget.
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const MyStatelessWidget(),
      ),
    );
  }
}

/// This is the stateless widget that the main application instantiates.
class MyStatelessWidget extends StatelessWidget {
  const MyStatelessWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final PageController controller = PageController(initialPage: 0);
    return PageView(
      /// [PageView.scrollDirection] defaults to [Axis.horizontal].
      /// Use [Axis.vertical] to scroll vertically.
      scrollDirection: Axis.horizontal,
      controller: controller,
      children: const <Widget>[
        Center(
          child: Text('First Page'),
        ),
        Center(
          child: Text('Second Page'),
        ),
        Center(
          child: Text('Third Page'),
        )
      ],
    );
  }
}

And I run it on Android, it works well. and It works also in web (mobile mode).

But when I run it on chrome (web|desktop) pages are not swipeable, and there is no way to change pages.

How to enable swipe on web desktop export?

Flutter version is 2.5.2


Solution

  • Thanks to Bigfoot, For support swipe with mouse, we need to change default scroll behavior of app by these steps:

    1- Create a class, extend it from MaterialScrollBeavior, and override dragDevices:

    class AppScrollBehavior extends MaterialScrollBehavior {
      @override
      Set<PointerDeviceKind> get dragDevices => {
            PointerDeviceKind.touch,
            PointerDeviceKind.mouse,
          };
    }
    

    2- Pass an AppScrollBehavior instance to scrollBehavior property of MaterialApp:

    MaterialApp(
          scrollBehavior: AppScrollBehavior(),
          ...
        );
    

    After that, we can swipe between pages also with mouse.

    Update Flutter 3.3:

    From flutter 3.3, trackpad on laptops not working for scroll and swipe actions, if you need to support trackpad too, you need add PointerDeviceKind.trackpad to dragDevices like this:

    class AppScrollBehavior extends MaterialScrollBehavior {
      @override
      Set<PointerDeviceKind> get dragDevices => {
            PointerDeviceKind.touch,
            PointerDeviceKind.mouse,
            PointerDeviceKind.trackpad,
          };
    }