Uclass 4

M1S4.dart

import 'package:flutter/material.dart';

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

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        backgroundColor: Colors.deepPurple.shade100,
        appBar: AppBar(
          title: const Text('Clase Cuatro'),
        ),
        body: const ListOfStacks(),
      ),
    );
  }
}

class ListOfStacks extends StatelessWidget {
  const ListOfStacks({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    const TextAlign textAlign = TextAlign.center;

    return SingleChildScrollView(
      padding: const EdgeInsets.all(16),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          SizedBox(
            width: 250,
            child: Row(
              mainAxisSize: MainAxisSize.max,
              children: [
                Expanded(
                    flex: 2,
                    child: Container(
                      color: Colors.red,
                      height: 100,
                      width: 50,
                    )),
                Container(color: Colors.yellow, height: 100, width: 50),
                Container(color: Colors.green, height: 100, width: 50),
              ],
            ),
          ),
          const Divider(),
          SizedBox(
            width: 250,
            child: Row(
              children: [
                Flexible(
                    flex: 2,
                    child: Container(
                      color: Colors.red,
                      height: 100,
                      width: 100,
                    )),
                Container(color: Colors.yellow, height: 100, width: 50),
              ],
            ),
          ),
          GestureDetector(
            onTap: () {
              ScaffoldMessenger.of(context).showSnackBar(
                const SnackBar(
                  content: Text('Tapped'),
                ),
              );
            },
            onLongPress: () => ScaffoldMessenger.of(context).showSnackBar(
              const SnackBar(
                content: Text('Long Pressed'),
              ),
            ),
            child: Card(
              clipBehavior: Clip.antiAlias,
              shape: ShapeBorder.lerp(
                const RoundedRectangleBorder(
                  borderRadius: BorderRadius.all(Radius.circular(16)),
                ),
                const RoundedRectangleBorder(
                  borderRadius: BorderRadius.all(Radius.circular(16)),
                ),
                0.5,
              ),
              child: SizedBox(
                width: 200,
                height: 200,
                child: Stack(
                  children: [
                    Image.network(
                      'https://picsum.photos/800/800',
                      fit: BoxFit.cover,
                    ),
                    SizedBox(
                      width: double.maxFinite,
                      height: 35,
                      child: Card(
                        margin: EdgeInsets.zero,
                        clipBehavior: Clip.antiAlias,
                        shape: ShapeBorder.lerp(
                          const RoundedRectangleBorder(
                            borderRadius: BorderRadius.all(Radius.circular(16)),
                          ),
                          const RoundedRectangleBorder(
                            borderRadius: BorderRadius.all(Radius.circular(0)),
                          ),
                          1,
                        ),
                        child: const Center(
                          child: Text(
                            'Title Product',
                            textAlign: textAlign,
                          ),
                        ),
                      ),
                    ),
                    Align(
                      alignment: Alignment.bottomLeft,
                      child: SizedBox(
                        width: 150,
                        height: 35,
                        child: Card(
                          margin: EdgeInsets.zero,
                          color: Colors.deepPurple.shade200,
                          clipBehavior: Clip.antiAlias,
                          shape: ShapeBorder.lerp(
                            const RoundedRectangleBorder(
                              borderRadius:
                                  BorderRadius.all(Radius.circular(16)),
                            ),
                            const RoundedRectangleBorder(
                              borderRadius:
                                  BorderRadius.all(Radius.circular(16)),
                            ),
                            0.5,
                          ),
                          child: const Center(
                            child: Text(
                              'Discount 50%',
                              textAlign: textAlign,
                            ),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),
          Container(
            height: MediaQuery.of(context).size.height * 0.65,
            padding: const EdgeInsets.all(16),
            child: Stack(
              children: [
                const Positioned(
                  top: 2,
                  left: 23,
                  child: CircleAvatar(
                    backgroundImage:
                        NetworkImage('https://picsum.photos/200/300'),
                  ),
                ),
                Positioned(
                  top: 66,
                  left: 66,
                  width: 66,
                  height: 66,
                  child: IconButton(
                    iconSize: 24,
                    icon: const Icon(Icons.add),
                    onPressed: () {},
                    color: Colors.red,
                  ),
                ),
                Positioned(
                  top: 132,
                  child: Container(
                    width: 150,
                    height: 150,
                    color: Colors.blue,
                    child: const Text(
                      'Use Stack B',
                      textAlign: textAlign,
                    ),
                  ),
                ),
                const Positioned(
                  top: 198,
                  child: Card(
                    color: Colors.green,
                    child: Text(
                      'Use Stack C',
                      textAlign: textAlign,
                    ),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}