efortuna’s gists

efortuna / hover.dart

Created March 26, 2019 22:51

Flutter hover event -- a small modification of the Flutter base app

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

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

	class MyApp extends StatelessWidget {
	@override
	Widget build(BuildContext context) {
	return MaterialApp(
	home: MyHomePage(title: 'Flutter Demo Home Page'),

efortuna / fixed.dart

Last active May 10, 2024 15:36

A demonstration of the proper key placement (at the top of your widget tree) in scenarios that require keys.

	void main() => runApp(new MaterialApp(home: PositionedTiles()));

	class PositionedTiles extends StatefulWidget {
	@override
	State<StatefulWidget> createState() => PositionedTilesState();
	}

	class PositionedTilesState extends State<PositionedTiles> {
	List<Widget> tiles = [
	Padding(

efortuna / danger.dart

Last active December 21, 2018 21:43

An illustration of why you need to put keys at the top of your widget tree in scenarios that require keys.

	void main() => runApp(new MaterialApp(home: PositionedTiles()));

	class PositionedTiles extends StatefulWidget {
	@override
	State<StatefulWidget> createState() => PositionedTilesState();
	}

	class PositionedTilesState extends State<PositionedTiles> {
	// Stateful tiles now wrapped in padding (a stateless widget) to increase height
	// of widget tree and show why keys are needed at the Padding level.

efortuna / main.dart

Created December 20, 2018 23:15

Fixed stateful tile swapping example

	List<Widget> tiles = [
	StatefulColorfulTile(key: UniqueKey()), // Keys added here
	StatefulColorfulTile(key: UniqueKey()),
	];

	...
	class StatefulColorfulTile extends StatefulWidget {
	StatefulColorfulTile({Key key}) : super(key: key); // NEW CONSTRUCTOR

	@override

efortuna / main.dart

Created December 20, 2018 22:07

BUGGY Stateful tile swapping code

	List<Widget> tiles = [
	StatefulColorfulTile(),
	StatefulColorfulTile(),
	];

	...
	class StatefulColorfulTile extends StatefulWidget {
	@override
	ColorfulTileState createState() => ColorfulTileState();
	}

efortuna / main.dart

Created December 20, 2018 22:05

Stateless Tile swapping demonstration

	void main() => runApp(new MaterialApp(home: PositionedTiles()));

	class PositionedTiles extends StatefulWidget {
	@override
	State<StatefulWidget> createState() => PositionedTilesState();
	}

	class PositionedTilesState extends State<PositionedTiles> {
	List<Widget> tiles = [
	StatelessColorfulTile(),

efortuna / main.dart

Last active April 20, 2019 22:30

WikipediaExplorer class demoing the use of WebViews (subset of https://github.com/efortuna/wiki_browser/blob/master/lib/main.dart)

	class WikipediaExplorer extends StatefulWidget {
	@override
	_WikipediaExplorerState createState() => _WikipediaExplorerState();
	}

	class _WikipediaExplorerState extends State<WikipediaExplorer> {
	Completer<WebViewController> _controller = Completer<WebViewController>();
	final Set<String> _favorites = Set<String>();

	@override

Emily Fortuna efortuna