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pubspec.yaml
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name: login_01
description: A new Flutter project.

# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev

# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1

environment:
  sdk: ">=2.16.1 <3.0.0"

# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
  flutter:
    sdk: flutter


  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2
  smooth_page_indicator: ^1.0.0+2

dev_dependencies:
  flutter_test:
    sdk: flutter

  # The "flutter_lints" package below contains a set of recommended lints to
  # encourage good coding practices. The lint set provided by the package is
  # activated in the `analysis_options.yaml` file located at the root of your
  # package. See that file for information about deactivating specific lint
  # rules and activating additional ones.
  flutter_lints: ^1.0.0

# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec

# The following section is specific to Flutter.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  assets:
    - assets/bg.png
    - assets/bg1.png
    - assets/bg2.png
    - assets/bg3.png
    - assets/bg4.png

  # An image asset can refer to one or more resolution-specific "variants", see
  # https://flutter.dev/assets-and-images/#resolution-aware.

  # For details regarding adding assets from package dependencies, see
  # https://flutter.dev/assets-and-images/#from-packages

  # To add custom fonts to your application, add a fonts section here,
  # in this "flutter" section. Each entry in this list should have a
  # "family" key with the font family name, and a "fonts" key with a
  # list giving the asset and other descriptors for the font. For
  # example:
  # fonts:
  #   - family: Schyler
  #     fonts:
  #       - asset: fonts/Schyler-Regular.ttf
  #       - asset: fonts/Schyler-Italic.ttf
  #         style: italic
  #   - family: Trajan Pro
  #     fonts:
  #       - asset: fonts/TrajanPro.ttf
  #       - asset: fonts/TrajanPro_Bold.ttf
  #         weight: 700
  #
  # For details regarding fonts from package dependencies,
  # see https://flutter.dev/custom-fonts/#from-packages
  fonts:
    - family: SFUIText
      fonts:
        - asset: assets/SFUI-Text.ttf
main.dart
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import 'package:flutter/material.dart';
import 'package:login_29/homepage.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'My App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const HomePage(),
    );
  }
}
homepage.dart
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import 'package:flutter/material.dart';
import 'package:smooth_page_indicator/smooth_page_indicator.dart';

class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  // PageView 控制器
  final controller = PageController(viewportFraction: 0.8);

  List<String> image = [
    "assets/bg.png",
    "assets/bg1.png",
    "assets/bg2.png",
    "assets/bg3.png",
    "assets/bg4.png",
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      // 最外层容器，设置水平空白
      body: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 33),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            const SizedBox(height: 40),
            // 水平滚动融洽
            Directionality(
              textDirection: TextDirection.ltr,
              child: SizedBox(
                height: 440,
                width: double.infinity,
                child: PageView(
                  controller: controller,
                  children: List.generate(
                    image.length,
                    (int index) => Card(
                      elevation: 0,
                      shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(20),
                      ),
                      child: Container(
                        decoration: BoxDecoration(
                          image: DecorationImage(
                            image: AssetImage(image[index]),
                            fit: BoxFit.fitHeight,
                          ),
                          borderRadius: BorderRadius.circular(20),
                        ),
                      ),
                    ),
                  ),
                ),
              ),
            ),
            const SizedBox(height: 29),
            const Center(
              child: Text(
                "Time is value.",
                style: TextStyle(
                  fontFamily: "SFUIText",
                  fontSize: 20,
                  fontWeight: FontWeight.w500,
                  color: Color(0xff293036),
                ),
              ),
            ),
            const SizedBox(height: 9),
            const Text(
              "Order online, don't wait in line.",
              style: TextStyle(
                fontFamily: "SFUIText",
                fontSize: 14,
                fontWeight: FontWeight.w500,
                color: Color(0xff696e72),
              ),
            ),
            const Text(
              "Collect tokens,get free coffee.",
              style: TextStyle(
                fontFamily: "SFUIText",
                fontSize: 14,
                fontWeight: FontWeight.w500,
                color: Color(0xff696e72),
              ),
            ),
            const SizedBox(height: 23),
            SmoothPageIndicator(
              controller: controller,
              count: image.length,
              effect: const ExpandingDotsEffect(
                expansionFactor: 4,
                activeDotColor: Color(0xff1bbdc4),
                dotColor: Color(0xffccccd0),
                dotHeight: 4,
                dotWidth: 4,
              ),
            ),
            const SizedBox(height: 49),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                SizedBox(
                  height: 56,
                  width: 120,
                  child: ElevatedButton(
                    onPressed: () {},
                    child: const Text(
                      "Sign up",
                      style: TextStyle(
                        fontFamily: "SFUIText",
                        fontSize: 16,
                        fontWeight: FontWeight.bold,
                        color: Color(0xff293036),
                      ),
                    ),
                    style: ElevatedButton.styleFrom(
                      primary: Colors.white,
                      elevation: 10,
                      shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(8),
                      ),
                    ),
                  ),
                ),
                SizedBox(
                  height: 56,
                  width: 120,
                  child: ElevatedButton(
                    onPressed: () {},
                    child: const Text(
                      "Sign in",
                      style: TextStyle(
                        fontFamily: "SFUIText",
                        fontSize: 16,
                        fontWeight: FontWeight.bold,
                        color: Color(0xff293036),
                      ),
                    ),
                    style: ElevatedButton.styleFrom(
                      primary: const Color(0xff1bbdc4),
                      elevation: 10,
                      shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(8),
                      ),
                    ),
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}