Flutter Theme Demo - Part 1

readme.md

Flutter Theme Demo - Part 1

Created with <3 with dartpad.dev.

main.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Theme Demo - Part 1'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  final String title;

  const MyHomePage({
    Key? key,
    required this.title,
  }) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.amber,
      appBar: AppBar(
        title: Text(widget.title),
        backgroundColor: Colors.black,
      ),
      body: ListView(
        children: [
          Padding(
            padding: const EdgeInsets.all(40),
            child: Text(
              'Esta é a cor de background: Colors.amber ${Colors.amber}',
            ),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: 36, vertical: 12),
            child: Card(
              elevation: 3,
              color: Colors.deepOrange,
              child: Padding(
                padding: const EdgeInsets.all(24),
                child: Column(
                  children: [
                    const Text(
                      'You have pushed the button this many times:',
                    ),
                    Text(
                      '0',
                      style: Theme.of(context).textTheme.headlineMedium,
                    ),
                  ],
                ),
              ),
            ),
          ),
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 36, vertical: 12),
            height: 300,
            child: Card(
              elevation: 3,
              color: Colors.deepOrange,
              child: Padding(
                padding: const EdgeInsets.all(24),
                child: ListView(
                  scrollDirection: Axis.horizontal,
                  children: const [
                    Card(
                      elevation: 3,
                      color: Colors.white,
                      child: Padding(
                        padding: EdgeInsets.all(24),
                        child: Text(
                          'Conteudo do card 1',
                        ),
                      ),
                    ),
                    SizedBox(width: 12),
                    Card(
                      elevation: 3,
                      color: Colors.white,
                      child: Padding(
                        padding: EdgeInsets.all(24),
                        child: Text(
                          'Conteudo do card 2',
                        ),
                      ),
                    ),
                    SizedBox(width: 12),
                    Card(
                      elevation: 3,
                      color: Colors.white,
                      child: Padding(
                        padding: EdgeInsets.all(24),
                        child: Text(
                          'Conteúdo do card 3',
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),
          Theme(
            data: ThemeData.from(
              colorScheme: ColorScheme.fromSwatch(primarySwatch: Colors.green),
            ),
            child: Center(
              child: Container(
                width: 100,
                height: 100,
                color: Theme.of(context).colorScheme.primary,
              ),
            ),
          ),
          const SizedBox(height: 20),
          Theme(
            data: ThemeData.from(
              colorScheme: ColorScheme.fromSwatch(primarySwatch: Colors.green),
            ),
            child: Builder(
              builder: (BuildContext context) {
                return Center(
                  child: Container(
                    width: 100,
                    height: 100,
                    color: Theme.of(context).colorScheme.primary,
                  ),
                );
              },
            ),
          ),
          const SizedBox(height: 20),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              Column(
                children: [
                  Theme(
                    data: ThemeData.from(
                      colorScheme:
                          ColorScheme.fromSwatch(primarySwatch: Colors.green),
                    ),
                    child: Center(
                      child: Container(
                        width: 100,
                        height: 100,
                        color: Theme.of(context).colorScheme.primary,
                      ),
                    ),
                  ),
                  const SizedBox(height: 20),
                  Theme(
                    data: ThemeData.from(
                      colorScheme:
                          ColorScheme.fromSwatch(primarySwatch: Colors.green),
                    ),
                    child: Builder(
                      builder: (BuildContext context) {
                        return Center(
                          child: Container(
                            width: 100,
                            height: 100,
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        );
                      },
                    ),
                  ),
                ],
              ),
              Column(
                children: [
                  Theme(
                    data: ThemeData.from(
                      colorScheme:
                          ColorScheme.fromSwatch(primarySwatch: Colors.green),
                    ),
                    child: Center(
                      child: Container(
                        width: 100,
                        height: 100,
                        color: Colors
                            .green, //aqui eu fiz um ajuste para poder fazer a foto bonitinha :)
                      ),
                    ),
                  ),
                  const SizedBox(height: 20),
                  Theme(
                    data: ThemeData.from(
                      colorScheme:
                          ColorScheme.fromSwatch(primarySwatch: Colors.green),
                    ),
                    child: Builder(
                      builder: (BuildContext context) {
                        return Center(
                          child: Container(
                            width: 100,
                            height: 100,
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        );
                      },
                    ),
                  ),
                ],
              ),
            ],
          ),
          const SizedBox(height: 20),
        ],
      ),
    );
  }
}