लेआउट विजेट की मूल बातें

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Container Demo')),
        body: Center(
          child: Container(
            padding: const EdgeInsets.all(20.0),
            color: Colors.blueAccent,
            child: const Text(
              'Hello from Container!',
              style: TextStyle(color: Colors.white, fontSize: 18),
            ),
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Row Demo')),
        body: Center(
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: <Widget>[
              ElevatedButton(onPressed: () {}, child: const Text('Button 1')),
              ElevatedButton(onPressed: () {}, child: const Text('Button 2')),
              ElevatedButton(onPressed: () {}, child: const Text('Button 3')),
            ],
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Column Demo')),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              const Padding(
                padding: EdgeInsets.all(8.0),
                child: TextField(
                  decoration: InputDecoration(labelText: 'Username'),
                ),
              ),
              const Padding(
                padding: EdgeInsets.all(8.0),
                child: TextField(
                  obscureText: true,
                  decoration: InputDecoration(labelText: 'Password'),
                ),
              ),
              ElevatedButton(onPressed: () {}, child: const Text('Login')),
            ],
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Stack Demo')),
        body: Center(
          child: SizedBox(
            width: 300,
            height: 200,
            child: Stack(
              children: <Widget>[
                Image.network(
                  'https://picsum.photos/300/200',
                  fit: BoxFit.cover,
                ),
                const Positioned(
                  bottom: 10,
                  left: 10,
                  child: Text(
                    'Beautiful Scenery',
                    style: TextStyle(
                      color: Colors.white,
                      fontSize: 20,
                      fontWeight: FontWeight.bold,
                      shadows: [
                        Shadow(blurRadius: 5, color: Colors.black)
                      ],
                    ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}