Flutter: Scrolling in 2 dimensions. Doesn't do diagonals, nor pinch/zoom or ScrollBars.

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(new MaterialApp(
    home: new MyHomePage(),
  ));
}

class MyHomePage extends StatelessWidget {
  Widget build(BuildContext context) {
    ThemeData themeData = Theme.of(context);
    return new Scaffold(
      body: new SingleChildScrollView(
        scrollDirection: Axis.horizontal,
        child: new SizedBox(
          width: 4000.0,
          child: new ListView.builder(
            itemBuilder: (BuildContext context, int i) {
              return new Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: _createText(20),
              );
            },
          ),
        ),
      ),
    );
  }

  List<Widget> _createText(int i) {
    List<Widget> widgets = [];
    for (int r = 1; r <= 20; r++) {
      widgets.add(newCell("Row " + r.toString() + " Column " + i.toString()));
    }
    return widgets;
  }

  Widget newCell(String data) {
    return CircleAvatar(
        maxRadius: 80.0,
        child: Padding(
          padding: EdgeInsets.all(15.0),
          child: Text(data),
        ));
  }
}

Hi Andy. Thank you for the snippet. I put it to dartpad https://dartpad.dev/690e349b14d21ce5cf02f2507da85cf9 and found out a typo: there should be _createText(i), not _createText(20). Cheers, Vladimir.