Flutter-Ernaehrungsapp/lib/main.dart

import 'package:flutter/material.dart';
import 'package:card_swiper/card_swiper.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  final String title;

  MyHomePage({required this.title});

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _selectedIndex = 0;
  final PageController _pageController = PageController(initialPage: 0);

  void _onItemTapped(int index) {
    setState(() {
      _selectedIndex = index;
      _pageController.animateToPage(index,
          duration: const Duration(milliseconds: 300), curve: Curves.easeInOut);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: PageView(
        controller: _pageController,
        children: _widgetOptions,
        onPageChanged: (int index) {
          setState(() {
            _selectedIndex = index;
          });
        },
      ),
      bottomNavigationBar: BottomNavigationBar(
        items: const <BottomNavigationBarItem>[
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: 'Page 1',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.work),
            label: 'Page 2',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.school),
            label: 'Page 3',
          ),
        ],
        currentIndex: _selectedIndex,
        onTap: _onItemTapped,
      ),
    );
  }

  static final List<Widget> _widgetOptions = <Widget>[
    Swiper(
      itemBuilder: (BuildContext context, int index) {
        return const CardContent(
          title: 'Page 1',
          description: 'This is page 1',
        );
      },
      itemCount: 1,
      loop: false,
    ),
    Swiper(
      itemBuilder: (BuildContext context, int index) {
        return const CardContent(
          title: 'Page 2',
          description: 'This is page 2',
        );
      },
      itemCount: 1,
      loop: false,
    ),
    Swiper(
      itemBuilder: (BuildContext context, int index) {
        return const CardContent(
          title: 'Page 3',
          description: 'This is page 3',
        );
      },
      itemCount: 1,
      loop: false,
    ),
  ];
}

class CardContent extends StatelessWidget {
  final String title;
  final String description;

  const CardContent({required this.title, required this.description});

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: MediaQuery.of(context).size.height * 0.8,
      child: Card(
        margin: const EdgeInsets.all(20.0),
        child: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: <Widget>[
              Text(title, style: const TextStyle(fontSize: 24.0)),
              const SizedBox(height: 8.0),
              Text(description, style: const TextStyle(fontSize: 16.0)),
            ],
          ),
        ),
      ),
    );

  }
}