extended_tabs 2.0.0-non-null-safety

A powerful official extension library of Tab/TabBar/TabView, which support to scroll ancestor or child Tabs when current is overscroll, and set scroll direction and cache extent.

example/lib/main.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'example_route.dart';
import 'example_route_helper.dart';
import 'example_routes.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'extended_tabs demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      initialRoute: Routes.fluttercandiesMainpage,
      onGenerateRoute: (RouteSettings settings) {
        //when refresh web, route will as following
        //   /
        //   /fluttercandies:
        //   /fluttercandies:/
        //   /fluttercandies://mainpage
        if (kIsWeb && settings.name.startsWith('/')) {
          return onGenerateRouteHelper(
            settings.copyWith(name: settings.name.replaceFirst('/', '')),
            notFoundFallback:
                getRouteResult(name: Routes.fluttercandiesMainpage).widget,
          );
        }
        return onGenerateRouteHelper(settings,
            builder: (Widget child, RouteResult result) {
          if (settings.name == Routes.fluttercandiesMainpage ||
              settings.name == Routes.fluttercandiesDemogrouppage) {
            return child;
          }
          return CommonWidget(
            child: child,
            result: result,
          );
        });
      },
    );
  }
}

class CommonWidget extends StatelessWidget {
  const CommonWidget({
    this.child,
    this.result,
  });
  final Widget child;
  final RouteResult result;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          result.routeName,
        ),
      ),
      body: child,
    );
  }
}