Flutter Responsive Framework 教程

Flutter Responsive Framework 教程

【免费下载链接】ResponsiveFramework Easily make Flutter apps responsive. Automatically adapt UI to different screen sizes. Responsiveness made simple. Demo: https://gallery.codelessly.com/flutterwebsites/minimal/ 项目地址: https://gitcode.com/gh_mirrors/re/ResponsiveFramework

1. 项目的目录结构及介绍

ResponsiveFramework/
├── example/
│   ├── lib/
│   │   ├── main.dart
│   │   └── ...
│   └── pubspec.yaml
├── lib/
│   ├── responsive_framework.dart
│   └── ...
├── pubspec.yaml
└── README.md

• example/: 包含一个示例项目，展示了如何使用 ResponsiveFramework。
  • lib/: 示例项目的源代码。
    • main.dart: 示例项目的入口文件。
  • pubspec.yaml: 示例项目的依赖配置文件。
• lib/: ResponsiveFramework 的核心库代码。
  • responsive_framework.dart: 框架的主要实现文件。
• pubspec.yaml: 框架的依赖配置文件。
• README.md: 项目的说明文档。

2. 项目的启动文件介绍

在 example/lib/main.dart 文件中，可以看到项目的启动代码：

import 'package:flutter/material.dart';
import 'package:responsive_framework/responsive_framework.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      builder: (context, widget) => ResponsiveWrapper.builder(
        BouncingScrollWrapper.builder(context, widget),
        maxWidth: 1200,
        minWidth: 450,
        defaultScale: true,
        breakpoints: [
          ResponsiveBreakpoint.resize(450, name: MOBILE),
          ResponsiveBreakpoint.autoScale(800, name: TABLET),
          ResponsiveBreakpoint.resize(1000, name: DESKTOP),
        ],
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Responsive Framework Example"),
      ),
      body: Center(
        child: Text("Hello, world!"),
      ),
    );
  }
}

• main 函数：应用的入口点，调用 runApp 启动应用。
• MyApp 类：应用的根组件，配置了 ResponsiveWrapper 以实现响应式布局。
• MyHomePage 类：应用的主页面。

3. 项目的配置文件介绍

pubspec.yaml

在 example/pubspec.yaml 文件中，可以看到项目的依赖配置：

name: example
description: A new Flutter project.
publish_to: 'none'
version: 1.0.0+1

environment:
  sdk: ">=2.12.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  responsive_framework:
    path: ../

dev_dependencies:
  flutter_test:
    sdk: flutter
  flutter_lints: ^1.0.0

flutter:
  uses-material-design: true

• dependencies: 列出了项目依赖的包，包括 flutter 和 responsive_framework。
• dev_dependencies: 列出了开发依赖的包，如 flutter_test 和 flutter_lints。
• flutter: 配置了 Flutter 相关的设置，如使用 Material Design。

在 ResponsiveFramework/pubspec.yaml 文件中，可以看到框架本身的依赖配置：

name: responsive_framework
description: A micro-framework for Flutter that simplifies developing responsive apps.
version: 0.1.5

environment:
  sdk: ">=2.12.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

dev_dependencies:
  flutter_test:
    sdk: flutter
  flutter_lints: ^1.0.0

flutter:
  uses-material-design: true

• dependencies: 列出了框架依赖的包，包括 flutter。

【免费下载链接】ResponsiveFramework Easily make Flutter apps responsive. Automatically adapt UI to different screen sizes. Responsiveness made simple. Demo: https://gallery.codelessly.com/flutterwebsites/minimal/ 项目地址: https://gitcode.com/gh_mirrors/re/ResponsiveFramework