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This commit is contained in:
Serxiolog 2024-09-15 18:18:23 +04:00
parent 95e5126be4
commit 01d2a8701f

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@ -1,3 +1,5 @@
import 'dart:math';
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
void main() { void main() {
@ -7,31 +9,15 @@ void main() {
class MyApp extends StatelessWidget { class MyApp extends StatelessWidget {
const MyApp({super.key}); const MyApp({super.key});
// This widget is the root of your application. @override
@override
Widget build(BuildContext context) { Widget build(BuildContext context) {
return MaterialApp( return MaterialApp(
title: 'Flutter Demo', title: 'Flutter Demo',
theme: ThemeData( theme: ThemeData(
// This is the theme of your application. colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
//
// TRY THIS: Try running your application with "flutter run". You'll see
// the application has a purple toolbar. Then, without quitting the app,
// try changing the seedColor in the colorScheme below to Colors.green
// and then invoke "hot reload" (save your changes or press the "hot
// reload" button in a Flutter-supported IDE, or press "r" if you used
// the command line to start the app).
//
// Notice that the counter didn't reset back to zero; the application
// state is not lost during the reload. To reset the state, use hot
// restart instead.
//
// This works for code too, not just values: Most code changes can be
// tested with just a hot reload.
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true, useMaterial3: true,
), ),
home: const MyHomePage(title: 'Flutter Demo Home Page'), home: const MyHomePage(title: 'KozyrevSS'),
); );
} }
} }
@ -39,15 +25,8 @@ class MyApp extends StatelessWidget {
class MyHomePage extends StatefulWidget { class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title}); const MyHomePage({super.key, required this.title});
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title; final String title;
@override @override
@ -56,54 +35,24 @@ class MyHomePage extends StatefulWidget {
class _MyHomePageState extends State<MyHomePage> { class _MyHomePageState extends State<MyHomePage> {
int _counter = 0; int _counter = 0;
Color _color = Colors.white;
void _incrementCounter() { void _incrementCounter() {
setState(() { setState(() {
// This call to setState tells the Flutter framework that something has _counter++;
// changed in this State, which causes it to rerun the build method below _color = Color((Random().nextDouble() * 0xFFFFFF).toInt()).withOpacity(1.0);
// 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++;
}); });
} }
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done return Scaffold(
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar( appBar: AppBar(
// TRY THIS: Try changing the color here to a specific color (to backgroundColor: _color,
// Colors.amber, perhaps?) and trigger a hot reload to see the AppBar title: Text(widget.title),
// change color while the other colors stay the same.
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
// 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( body: Center(
// Center is a layout widget. It takes a single child and positions it child: Column(
// in the middle of the parent. mainAxisAlignment: MainAxisAlignment.center,
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.
//
// 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).
//
// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
// action in the IDE, or press "p" in the console), to see the
// wireframe for each widget.
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[ children: <Widget>[
const Text( const Text(
'You have pushed the button this many times:', 'You have pushed the button this many times:',
@ -112,6 +61,8 @@ class _MyHomePageState extends State<MyHomePage> {
'$_counter', '$_counter',
style: Theme.of(context).textTheme.headlineMedium, style: Theme.of(context).textTheme.headlineMedium,
), ),
if (_counter > 10)
const Text("Why are you doing this?",)
], ],
), ),
), ),
@ -119,7 +70,6 @@ class _MyHomePageState extends State<MyHomePage> {
onPressed: _incrementCounter, onPressed: _incrementCounter,
tooltip: 'Increment', tooltip: 'Increment',
child: const Icon(Icons.add), child: const Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods. ), );
);
} }
} }