Flutter插件devanios的介绍与使用方法详解

Flutter插件devanios的介绍与使用方法详解

Devanios 是一个用于管理项目组合的 Dart 包。它提供了以下功能：

• 添加、修改、查看和删除项目。
• 为访客展示项目组合。

安装Flutter插件devanios

在你的 pubspec.yaml 文件中添加以下依赖项：

dependencies:
  devanios: ^0.0.1

使用示例

为了更好地理解 Devanios 的潜在用途，我们可以通过一个简单的示例来演示如何使用它。

首先，在你的 Flutter 项目的 main.dart 文件中引入 devanios 包，并创建一个简单的界面来管理项目。

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Devanios Demo',
      home: ProjectPortfolioScreen(),
    );
  }
}

class ProjectPortfolioScreen extends StatefulWidget {
  [@override](/user/override)
  _ProjectPortfolioScreenState createState() => _ProjectPortfolioScreenState();
}

class _ProjectPortfolioScreenState extends State<ProjectPortfolioScreen> {
  List<Project> projects = [];

  // 初始化项目数据
  void _initProjects() async {
    projects = await Devanios.getAllProjects();
    setState(() {});
  }

  // 添加新项目
  void _addProject(String name, String description) async {
    await Devanios.addProject(name, description);
    _initProjects();
  }

  // 修改项目
  void _updateProject(Project project, String newName, String newDescription) async {
    await Devanios.updateProject(project.id, newName, newDescription);
    _initProjects();
  }

  // 删除项目
  void _deleteProject(Project project) async {
    await Devanios.deleteProject(project.id);
    _initProjects();
  }

  [@override](/user/override)
  void initState() {
    super.initState();
    _initProjects();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('项目组合'),
      ),
      body: ListView.builder(
        itemCount: projects.length,
        itemBuilder: (context, index) {
          final project = projects[index];
          return ListTile(
            title: Text(project.name),
            subtitle: Text(project.description),
            trailing: Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                IconButton(
                  icon: Icon(Icons.edit),
                  onPressed: () {
                    // 显示编辑对话框
                    showDialog(
                      context: context,
                      builder: (BuildContext context) {
                        String newName = project.name;
                        String newDescription = project.description;

                        return AlertDialog(
                          title: Text('编辑项目'),
                          content: Column(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              TextField(
                                decoration: InputDecoration(labelText: '项目名称'),
                                onChanged: (value) => newName = value,
                              ),
                              TextField(
                                decoration: InputDecoration(labelText: '项目描述'),
                                onChanged: (value) => newDescription = value,
                              ),
                            ],
                          ),
                          actions: [
                            TextButton(
                              child: Text('取消'),
                              onPressed: () {
                                Navigator.of(context).pop();
                              },
                            ),
                            TextButton(
                              child: Text('保存'),
                              onPressed: () {
                                _updateProject(project, newName, newDescription);
                                Navigator.of(context).pop();
                              },
                            ),
                          ],
                        );
                      },
                    );
                  },
                ),
                IconButton(
                  icon: Icon(Icons.delete),
                  onPressed: () {
                    // 删除项目
                    _deleteProject(project);
                  },
                ),
              ],
            ),
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          // 显示添加对话框
          showDialog(
            context: context,
            builder: (BuildContext context) {
              String projectName = '';
              String projectDescription = '';

              return AlertDialog(
                title: Text('添加项目'),
                content: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    TextField(
                      decoration: InputDecoration(labelText: '项目名称'),
                      onChanged: (value) => projectName = value,
                    ),
                    TextField(
                      decoration: InputDecoration(labelText: '项目描述'),
                      onChanged: (value) => projectDescription = value,
                    ),
                  ],
                ),
                actions: [
                  TextButton(
                    child: Text('取消'),
                    onPressed: () {
                      Navigator.of(context).pop();
                    },
                  ),
                  TextButton(
                    child: Text('保存'),
                    onPressed: () {
                      _addProject(projectName, projectDescription);
                      Navigator.of(context).pop();
                    },
                  ),
                ],
              );
            },
          );
        },
        tooltip: '添加项目',
        child: Icon(Icons.add),
      ),
    );
  }
}