Flutter思维导图插件mind_map的使用
Flutter思维导图插件mind_map的使用
Introduction
Mind map 是一个帮助用户创建思维树的库。这个包是从 mind_map 库中分叉出来的，并添加了额外的功能。
Demo
示例代码
完整的示例Demo
import 'package:flutter/material.dart';
import 'package:mind_map/mind_map.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Mind map'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: SafeArea(
child: SingleChildScrollView(
child: Row(
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10)),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10).copyWith(right: 0),
margin: const EdgeInsets.only(left: 10),
child: const Text('Parent MindMap'),
),
MindMap(
padding: const EdgeInsets.only(left: 50),
dotRadius: 4,
children: [
Row(
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10).copyWith(right: 0),
child: const Text('Component 1'),
),
MindMap(
dotRadius: 4,
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 2'),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 3'),
),
Row(
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10).copyWith(right: 0),
child: const Text('Component 4'),
),
MindMap(dotRadius: 4,
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5'),
),
]),
],
)
],
),
],
),
GestureDetector(
onTap: () {
debugPrint('12313');
},
child: Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10)),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 2'),
),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5'),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5'),
),
Row(
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10).copyWith(right: 0),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5121212121'),
),
MindMap(
dotRadius: 4,
children: [
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5121212121'),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5121212121'),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5121212121'),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5121212121'),
),
Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(10),
),
margin: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
child: const Text('Component 5121212121'),
),
],
),
],
)
],
)
],
),
),
),
);
}
}
说明
- MindMap 组件用于创建思维导图。
- children 属性用于添加子节点。
- dotRadius 属性用于设置连接点的半径。
- padding 属性用于设置组件的内边距。
- Container 组件用于创建节点内容，可以自定义样式和内容。
通过上述示例，您可以快速上手并创建复杂的思维导图。希望对您有所帮助！
更多关于Flutter思维导图插件mind_map的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
1 回复
更多关于Flutter思维导图插件mind_map的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然，以下是一个关于如何在Flutter项目中使用mind_map插件来创建和显示思维导图的示例代码。这个示例将展示如何安装插件、导入必要的包以及构建一个基本的思维导图界面。
1. 安装插件
首先，你需要在你的pubspec.yaml文件中添加mind_map插件的依赖：
dependencies:
flutter:
sdk: flutter
mind_map: ^最新版本号 # 请替换为实际可用的最新版本号
然后运行flutter pub get来安装依赖。
2. 导入必要的包
在你的Dart文件中，导入mind_map包：
import 'package:flutter/material.dart';
import 'package:mind_map/mind_map.dart';
3. 构建思维导图界面
下面是一个简单的示例，展示了如何使用mind_map插件来创建一个基本的思维导图：
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Mind Map Example',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MindMapScreen(),
);
}
}
class MindMapScreen extends StatefulWidget {
@override
_MindMapScreenState createState() => _MindMapScreenState();
}
class _MindMapScreenState extends State<MindMapScreen> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Mind Map Example'),
),
body: Center(
child: Container(
child: MindMapView(
nodes: _createNodes(),
lines: _createLines(),
),
),
),
);
}
List<Node> _createNodes() {
return [
Node(
id: 'root',
label: 'Root Node',
x: 300,
y: 300,
color: Colors.blue,
),
Node(
id: 'child1',
label: 'Child Node 1',
x: 150,
y: 300,
color: Colors.green,
),
Node(
id: 'child2',
label: 'Child Node 2',
x: 450,
y: 300,
color: Colors.red,
),
];
}
List<Line> _createLines() {
return [
Line(from: 'root', to: 'child1'),
Line(from: 'root', to: 'child2'),
];
}
}
class Node {
final String id;
final String label;
final double x;
final double y;
final Color color;
Node({required this.id, required this.label, required this.x, required this.y, required this.color});
}
class Line {
final String from;
final String to;
Line({required this.from, required this.to});
}
注意：
- 在上面的代码中，
MindMapView是一个假设的组件，用于展示思维导图。由于mind_map插件的具体API可能有所不同，你需要参考该插件的官方文档来正确实现这一组件。如果mind_map插件提供了类似MindMapView的组件，你可能需要按照文档调整节点和线条的传递方式。 Node和Line类是为了演示而创建的简单数据模型。你需要根据mind_map插件的实际要求来调整这些类的结构和属性。
4. 运行应用
确保你的开发环境已经正确配置，然后运行你的Flutter应用。你应该能够看到一个包含根节点和两个子节点的简单思维导图。
重要提示：由于mind_map插件的具体实现和API可能会有所不同，上述代码仅为示例，并非直接可用的完整实现。在实际开发中，请务必参考mind_map插件的官方文档和示例代码来获取准确的实现方法。
