import 'package:flutter/material.dart';

/// Flutter infinite scroll
/// Flutter 无限滚动(横向)
/// 
/// bckf.cn

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) => MaterialApp(
        home: HomePage(),
      );
}

int maxPage = 2000000000;

class HomePage extends StatelessWidget {
  static const List<Color> _colors = [Colors.blue, Colors.green, Colors.red];

  final pageController = new PageController(initialPage: maxPage);

  @override
  Widget build(BuildContext context) => Scaffold(
        body: PageView.builder(
          controller: pageController,
          itemBuilder: (BuildContext context, int index) {
            var renderIndex = index - maxPage;
            renderIndex = renderIndex % _colors.length;
            if (renderIndex < 0) {
              renderIndex += _colors.length;
            }
            return Container(
              color:_colors[index % _colors.length],
                child: Center(
                    child: Text("text $renderIndex, default Index: $index",
                        style: TextStyle(
                            fontSize: 36.0,
                            color: Colors.white))));
          },
        ),
      );
}