Ozodbek

The report names the install page, sites/docs/src/content/install/index.md, but states no problem; the body is a pasted Dart/Flutter demo app with a title of 'Ozodbek'. Start by checking that page against the Flutter install steps, then ask the reporter what is wrong with it before editing. Done means the reporter confirms the specific problem and a fix to that page is merged.

Page URL

https://docs.flutter.dev/install

Page source

https://github.com/flutter/website/blob/main/sites/docs/src/content/install/index.md

Describe the problem

import 'package:flutter/material.dart';

void main() {
runApp(const Med3DApp());
}

class Med3DApp extends StatelessWidget {
const Med3DApp({super.key});

@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Med3D AI',
theme: ThemeData(
useMaterial3: true,
colorScheme: ColorScheme.fromSeed(
seedColor: const Color(0xFFB32635),
),
),
home: const MainPage(),
);
}
}

class MainPage extends StatefulWidget {
const MainPage({super.key});

@override
State createState() => _MainPageState();
}

class _MainPageState extends State {
int selectedIndex = 0;

final pages = const [
HomePage(),
TutorPage(),
QuizPage(),
BmiPage(),
];

@override
Widget build(BuildContext context) {
return Scaffold(
body: IndexedStack(
index: selectedIndex,
children: pages,
),
bottomNavigationBar: NavigationBar(
selectedIndex: selectedIndex,
onDestinationSelected: (i) {
setState(() => selectedIndex = i);
},
destinations: const [
NavigationDestination(
icon: Icon(Icons.home_outlined),
label: 'Bosh sahifa',
),
NavigationDestination(
icon: Icon(Icons.psychology_alt_outlined),
label: 'AI Tutor',
),
NavigationDestination(
icon: Icon(Icons.quiz_outlined),
label: 'Testlar',
),
NavigationDestination(
icon: Icon(Icons.calculate_outlined),
label: 'BMI',
),
],
),
);
}
}

class HomePage extends StatelessWidget {
const HomePage({super.key});

final subjects = const [
'Anatomiya',
'Fiziologiya',
'Patofiziologiya',
'Patologik anatomiya',
'Farmakologiya',
'Radiologiya',
'Ichki kasalliklar',
'Pediatriya',
];

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text(
'Med3D AI',
style: TextStyle(fontWeight: FontWeight.bold),
),
),
body: ListView(
padding: const EdgeInsets.all(16),
children: [
Container(
padding: const EdgeInsets.all(22),
decoration: BoxDecoration(
gradient: const LinearGradient(
colors: [
Color(0xFF8E1B2B),
Color(0xFFD94B5B),
],
),
borderRadius: BorderRadius.circular(24),
),
child: const Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Icon(
Icons.favorite,
color: Colors.white,
size: 42,
),
SizedBox(height: 12),
Text(
'Kelajak shifokorlari uchun!',
style: TextStyle(
color: Colors.white,
fontSize: 23,
fontWeight: FontWeight.bold,
),
),
SizedBox(height: 8),
Text(
'O‘rganing, tushuning, amalda qo‘llang.',
style: TextStyle(color: Colors.white),
),
],
),
),
const SizedBox(height: 24),
const Text(
'Tibbiy fanlar',
style: TextStyle(
fontSize: 21,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 10),
...subjects.map(
(subject) => Card(
child: ListTile(
leading: const CircleAvatar(
child: Icon(Icons.menu_book),
),
title: Text(subject),
trailing: const Icon(Icons.chevron_right),
onTap: () {
showDialog(
context: context,
builder: (context) => AlertDialog(
title: Text(subject),
content: const Text(
'Mavzuni o‘rganish rejasi:\n\n'
'1. Ta’rif\n'
'2. Sabablari\n'
'3. Rivojlanish mexanizmi\n'
'4. Klinik belgilar\n'
'5. Diagnostika va davolash',
),
actions: [
TextButton(
onPressed: () => Navigator.pop(context),
child: const Text('Yopish'),
),
],
),
);
},
),
),
),
const SizedBox(height: 16),
const Text(
'Med3D AI — tibbiy ta’lim uchun o‘quv prototipi.',
style: TextStyle(color: Colors.grey),
),
],
),
);
}
}

class TutorPage extends StatefulWidget {
const TutorPage({super.key});

@override
State createState() => _TutorPageState();
}

class _TutorPageState extends State {
final controller = TextEditingController();

final messages = [
'Salom! Men Med3D AI demo yordamchisiman. '
'Yurak, anatomiya yoki boshqa tibbiy mavzu haqida savol bering.',
];

String answer(String question) {
final q = question.toLowerCase();

if (q.contains('yurak')) {
  return 'Yurak to‘rt bo‘limdan iborat: '
      'o‘ng bo‘lmacha, o‘ng qorincha, chap bo‘lmacha '
      'va chap qorincha. O‘ng tomon qonni o‘pkaga, '
      'chap tomon esa katta qon aylanish doirasiga haydaydi.';
}

if (q.contains('osteomiyelit') ||
    q.contains('osteomielit')) {
  return 'Osteomiyelit — suyak va suyak iligining '
      'infeksion yallig‘lanishi. Belgilariga og‘riq, '
      'shish va isitma kirishi mumkin. Tashxis shifokor '
      'ko‘rigi va tekshiruvlar asosida qo‘yiladi.';
}

if (q.contains('qon')) {
  return 'Qon plazma va shaklli elementlardan iborat. '
      'Eritrotsitlar kislorod tashiydi, leykotsitlar '
      'immun himoyada qatnashadi, trombotsitlar '
      'esa qon ivishida muhim rol o‘ynaydi.';
}

return 'Bu versiyada javoblar cheklangan demo '
    'ma’lumotlariga asoslanadi. Haqiqiy AI javoblarini '
    'olish uchun keyinchalik AI xizmatini xavfsiz '
    'server orqali ulashimiz kerak.';

}

void send() {
final question = controller.text.trim();
if (question.isEmpty) return;

setState(() {
  messages.add('Siz: $question');
  messages.add('Med3D AI: ${answer(question)}');
  controller.clear();
});

}

@override
void dispose() {
controller.dispose();
super.dispose();
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('AI Tutor')),
body: Column(
children: [
Expanded(
child: ListView.builder(
padding: const EdgeInsets.all(12),
itemCount: messages.length,
itemBuilder: (context, index) => Card(
child: Padding(
padding: const EdgeInsets.all(14),
child: Text(messages[index]),
),
),
),
),
SafeArea(
child: Padding(
padding: const EdgeInsets.all(10),
child: Row(
children: [
Expanded(
child: TextField(
controller: controller,
onSubmitted: (_) => send(),
decoration: const InputDecoration(
hintText: 'Savolingizni yozing...',
border: OutlineInputBorder(),
),
),
),
const SizedBox(width: 8),
IconButton.filled(
onPressed: send,
icon: const Icon(Icons.send),
),
],
),
),
),
],
),
);
}
}

class QuizPage extends StatefulWidget {
const QuizPage({super.key});

@override
State createState() => _QuizPageState();
}

class _QuizPageState extends State {
int question = 0;
int score = 0;
int? selected;

final questions = const [
{
'q': 'Yurak nechta bo‘limdan iborat?',
'a': ['2 ta', '3 ta', '4 ta', '5 ta'],
'correct': 2,
},
{
'q': 'Qonni kislorod bilan kim tashiydi?',
'a': ['Trombotsit', 'Eritrotsit', 'Leykotsit', 'Plazma'],
'correct': 1,
},
{
'q': 'Yurakning tabiiy ritm boshlovchisi?',
'a': ['Sinus tuguni', 'Mitral klapan', 'Aorta', 'Perikard'],
'correct': 0,
},
];

void next() {
if (selected == null) return;

if (selected == questions[question]['correct']) {
  score++;
}

if (question == questions.length - 1) {
  showDialog(
    context: context,
    builder: (context) => AlertDialog(
      title: const Text('Test natijasi'),
      content: Text('$score / ${questions.length} ta to‘g‘ri!'),
      actions: [
        TextButton(
          onPressed: () {
            Navigator.pop(context);
            setState(() {
              question = 0;
              score = 0;
              selected = null;
            });
          },
          child: const Text('Qayta boshlash'),
        ),
      ],
    ),
  );
} else {
  setState(() {
    question++;
    selected = null;
  });
}

}

@override
Widget build(BuildContext context) {
final item = questions[question];
final answers = item['a'] as List;

return Scaffold(
  appBar: AppBar(title: const Text('Tibbiy testlar')),
  body: ListView(
    padding: const EdgeInsets.all(16),
    children: [
      Text('Savol ${question + 1} / ${questions.length}'),
      const SizedBox(height: 20),
      Text(
        item['q'] as String,
        style: const TextStyle(
          fontSize: 22,
          fontWeight: FontWeight.bold,
        ),
      ),
      const SizedBox(height: 16),
      ...List.generate(
        answers.length,
        (i) => Card(
          child: RadioListTile<int>(
            value: i,
            groupValue: selected,
            title: Text(answers[i]),
            onChanged: (value) {
              setState(() => selected = value);
            },
          ),
        ),
      ),
      const SizedBox(height: 12),
      FilledButton(
        onPressed: selected == null ? null : next,
        child: const Text('Keyingi savol'),
      ),
    ],
  ),
);

}
}

class BmiPage extends StatefulWidget {
const BmiPage({super.key});

@override
State createState() => _BmiPageState();
}

class _BmiPageState extends State {
final heightController = TextEditingController();
final weightController = TextEditingController();

String result = '';

void calculate() {
final height = double.tryParse(
heightController.text.replaceAll(',', '.'),
);
final weight = double.tryParse(
weightController.text.replaceAll(',', '.'),
);

if (height == null ||
    weight == null ||
    height <= 0 ||
    weight <= 0) {
  setState(() => result = 'Bo‘y va vaznni to‘g‘ri kiriting.');
  return;
}

final meters = height > 3 ? height / 100 : height;
final bmi = weight / (meters * meters);

final category = bmi < 18.5
    ? 'Vazn yetishmasligi'
    : bmi < 25
        ? 'Me’yor oralig‘i'
        : bmi < 30
            ? 'Ortiqcha vazn'
            : 'Semizlik diapazoni';

setState(() {
  result = 'BMI: ${bmi.toStringAsFixed(1)}\n$category';
});

}

@override
void dispose() {
heightController.dispose();
weightController.dispose();
super.dispose();
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('BMI kalkulyator')),
body: ListView(
padding: const EdgeInsets.all(16),
children: [
const Text(
'Tana vazni indeksini hisoblash',
style: TextStyle(
fontSize: 22,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 20),
TextField(
controller: heightController,
keyboardType: const TextInputType.numberWithOptions(
decimal: true,
),
decoration: const InputDecoration(
labelText: 'Bo‘y (172 sm yoki 1.72 m)',
border: OutlineInputBorder(),
),
),
const SizedBox(height: 12),
TextField(
controller: weightController,
keyboardType: const TextInputType.numberWithOptions(
decimal: true,
),
decoration: const InputDecoration(
labelText: 'Vazn (kg)',
border: OutlineInputBorder(),
),
),
const SizedBox(height: 16),
FilledButton(
onPressed: calculate,
child: const Text('Hisoblash'),
),
const SizedBox(height: 16),
if (result.isNotEmpty)
Card(
child: Padding(
padding: const EdgeInsets.all(18),
child: Text(
result,
style: const TextStyle(fontSize: 20),
),
),
),
const Text(
'BMI — skrining ko‘rsatkichi, yakka o‘zi tashxis emas.',
style: TextStyle(color: Colors.grey),
),
],
),
);
}
}

Expected fix

No response

Additional context

No response

I would like to fix this problem.

• I will try and fix this problem on docs.flutter.dev.