pageView_main.dart

import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: darkBlue),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  final List<String> items = ['one', 'two', 'three', 'four', 'five'];
  @override
  Widget build(BuildContext context) {
    return Container(
      color: Colors.white10,
      width: 200,
      height: 300,
      child: PageView.builder(
          physics: PageScrollPhysics(),
          scrollDirection: Axis.horizontal,
          controller: PageController(viewportFraction: 0.7),
          itemCount: items.length,
          itemBuilder: (_, index) =>
              _Item(index, items.length - 1, items[index])),
    );
  }
}

class _Item extends StatelessWidget {
  const _Item(
    this._index,
    this._maxIndex,
    this._name, {
    Key key,
  }) : super(key: key);

  final int _index;
  final int _maxIndex;
  final String _name;

  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.fromLTRB(
        _index == 0 ? 4 : 8.0,
        8.0,
        _index == _maxIndex ? 4 : 8.0,
        8.0,
      ),
      child: Container(
          width: 140, color: Colors.amber, child: Center(child: Text(_name))),
    );
  }
}