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欢迎来到「技术刚刚好」作者，「技术刚刚好」是个人维护，每天至少更新一篇Flutter技术文章，实时为大家播报Flutter最新消息。如果你刚好也在关注Flutter这门技术，那就跟我一起学习进步吧，你的赞，收藏，转发是对我个人最大的支持，维护不易，欢迎关注。

技术刚刚好经历

近几年，移动端跨平台开发技术层出不穷，从Facebook家的ReactNative，到阿里家WEEX，前端技术在移动端跨平台开发中大展身手，技术刚刚好作为一名Android开发，经历了从Reactjs到Vuejs的不断学习。而在2018年，我们的主角变成了Flutter，这是Goolge开源的一个移动端跨平台解决方案，可以快速开发精美的移动App。希望跟大家一起学习，一起进步！

今天我来介绍一个简单入门的flutter应用，

项目结构

main.dart文件

<code>import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
      // Title
      title: "Simple Material App",
      // Home
      home: Scaffold(
        // Appbar
        appBar: AppBar(
          // Title
          title: Text("Simple Material App"),
        ),
        // Body
        body: Container(
          // Center the content
          child: Center(
            // Add Text
            child: Text("Hello World!"),
          ),
        ),
      )));
}/<code>

pubspec.yaml文件

<code>name: simple_material_app
description: A new Flutter project.

dependencies:
  flutter:
    sdk: flutter

dev_dependencies:
  flutter_test:
    sdk: flutter


# For information on the generic Dart part of this file, see the
# following page: https://www.dartlang.org/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 Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  # assets:
  #  - images/a_dot_burr.jpeg
  #  - images/a_dot_ham.jpeg

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

  # To add assets from package dependencies, first ensure the asset
  # is in the lib/ directory of the dependency. Then,
  # refer to the asset with a path prefixed with
  # `packages/PACKAGE_NAME/`. The `lib/` is implied, do not
  # include `lib/` in the asset path.
  #
  # Here is an example:
  #
  # assets:
  #  - packages/PACKAGE_NAME/path/to/asset

  # 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/<code>

谢谢观看技术刚刚好的文章，技术刚刚好是个人维护，每天至少更新一篇Flutter技术文章，实时为大家播报Flutter最新消息。如果你刚好也在关注Flutter这门技术，那就跟我一起学习进步吧，你的赞，收藏，转发是对我个人最大的支持，维护不易，欢迎关注。

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關鍵字: 项目 Android 入门