(meh) list of month values

This commit is contained in:
broodjeaap 2020-06-08 20:44:50 +02:00
parent f9477c7e88
commit 34df4cbc02

View file

@ -1,117 +1,76 @@
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
void main() { void main() {
runApp(MyApp()); runApp(OhThatsA());
} }
class MyApp extends StatelessWidget { class OhThatsA extends StatelessWidget {
// This widget is the root of your application. // This widget is the root of your application.
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
return MaterialApp( return MonthValuesPage();
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
// This makes the visual density adapt to the platform that you run
// the app on. For desktop platforms, the controls will be smaller and
// closer together (more dense) than on mobile platforms.
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
} }
} }
class MyHomePage extends StatefulWidget { class MonthValuesPage extends StatelessWidget {
MyHomePage({Key key, this.title}) : super(key: key); final Map<String, int> monthValues = {
"January": 0,
"February": 3,
"March": 3,
"April": 6,
"May": 1,
"June": 4,
"July": 6,
"August": 2,
"September": 5,
"October": 0,
"November": 3,
"December": 5,
};
// This widget is the home page of your application. It is stateful, meaning List<Widget> getMonthValueWidget(){
// that it has a State object (defined below) that contains fields that affect var monthWidgets = List<Widget>();
// how it looks. monthValues.forEach((key, value) {
monthWidgets.add(
// This class is the configuration for the state. It holds the values (in this Row(
// case the title) provided by the parent (in this case the App widget) and children: <Widget>[
// used by the build method of the State. Fields in a Widget subclass are Container(
// always marked "final". alignment: Alignment.center,
child: Text(
final String title; key,
style: TextStyle(
@override fontSize: 35
_MyHomePageState createState() => _MyHomePageState(); )
} )
),
class _MyHomePageState extends State<MyHomePage> { Container(
int _counter = 0; alignment: Alignment.centerRight,
child: Text(
void _incrementCounter() { value.toString(),
setState(() { style: TextStyle(
// This call to setState tells the Flutter framework that something has fontSize: 35
// changed in this State, which causes it to rerun the build method below )
// so that the display can reflect the updated values. If we changed )
// _counter without calling setState(), then the build method would not be )
// called again, and so nothing would appear to happen. ],
_counter++; )
);
}); });
return monthWidgets;
} }
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done return MaterialApp(
// by the _incrementCounter method above. title: "OhThatsA",
// home: Scaffold(
// The Flutter framework has been optimized to make rerunning build methods appBar: AppBar(
// fast, so that you can just rebuild anything that needs updating rather title: Text("Month Values")
// than having to individually change instances of widgets. ),
return Scaffold( body: Column(
appBar: AppBar( children: this.getMonthValueWidget()
// Here we take the value from the MyHomePage object that was created by )
// the App.build method, and use it to set our appbar title.
title: Text(widget.title),
), ),
body: Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: Column(
// Column is also a layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
//
// Invoke "debug painting" (press "p" in the console, choose the
// "Toggle Debug Paint" action from the Flutter Inspector in Android
// Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
// to see the wireframe for each widget.
//
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
); );
} }
} }