Flutter浮动操作轮盘插件floating_action_wheel的使用

Flutter浮动操作轮盘插件floating_action_wheel的使用

Floating Action Wheel

一个用于Flutter的新浮动操作按钮小部件,具有多功能、沉浸式按钮轮。

获取开始

安装

在你的pubspec.yaml文件中添加以下依赖项:

dependencies:
  floating_action_wheel: <最新版本>

使用

你可以选择将FloatingActionWheel作为Scaffold中的普通浮动操作按钮(floatingActionButton)使用,或者将其放在其他兼容的小部件中,如Container或Stack。

只需导入主类,并使用FloatingActionWheel()构造函数及其参数。必须传递的参数是一个按钮列表,其中每个按钮都有自己的属性,如文本、图标、图像和颜色,以及其点击回调。查看WheelButton类及其参数的内部文档。

import 'package:floating_action_wheel/floating_action_wheel.dart';
import 'package:floating_action_wheel/wheel_button.dart';

实现

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String demoText = "";
  Color backgroundColor = Colors.blue;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Floating Action Wheel Demo"),
      ),
      body: Center(
        child: Text(demoText),
      ),
      floatingActionButton: FloatingActionWheel(
        buttons: [
          WheelButton(
            onPressed: () {
              setState(() {
                demoText = "button #1 pressed";
                backgroundColor = Colors.orangeAccent;
              });
            },
            text: 'button 1',
            backgroundColor: Colors.orange,
          ),
          WheelButton(
            onPressed: () {
              setState(() {
                demoText = "button #2 pressed";
                backgroundColor = Colors.greenAccent;
              });
            },
            icon: Icons.ac_unit,
            backgroundColor: Colors.green,
          ),
          WheelButton(
            onPressed: () {
              setState(() {
                demoText = "button #3 pressed";
                backgroundColor = Colors.cyanAccent;
              });
            },
            image: Image.asset('assets/your_image.png'),
            backgroundColor: Colors.cyan,
          ),
          WheelButton(
            onPressed: () {
              setState(() {
                demoText = "button #4 pressed";
                backgroundColor = Colors.pinkAccent;
              });
            },
            icon: Icons.home,
            backgroundColor: Colors.pink,
          ),
        ],
        angleOffset: 90,
        visiblePart: 0.5,
        animationType: WheelAnimationType.around,
        wheelSize: WheelSize.wheel_medium_120,
        fabForegroundColor: Colors.white,
        fabBackgroundColor: Colors.blue,
        separated: false,
      ),
      backgroundColor: backgroundColor,
    );
  }
}

演示示例


更多关于Flutter浮动操作轮盘插件floating_action_wheel的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter浮动操作轮盘插件floating_action_wheel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,我可以为你提供一个关于如何在Flutter中使用floating_action_wheel插件的代码示例。floating_action_wheel插件允许你创建一个浮动操作轮盘(FAB Wheel),类似于Google Keep应用中使用的那种。

首先,确保你已经在pubspec.yaml文件中添加了floating_action_wheel依赖项:

dependencies:
  flutter:
    sdk: flutter
  floating_action_wheel: ^最新版本号  # 替换为当前最新版本号

然后,运行flutter pub get来安装依赖项。

接下来,你可以在你的Flutter应用中实现FAB Wheel。以下是一个简单的示例:

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Floating Action Wheel Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: FABWheelScreen(),
    );
  }
}

class FABWheelScreen extends StatefulWidget {
  @override
  _FABWheelScreenState createState() => _FABWheelScreenState();
}

class _FABWheelScreenState extends State<FABWheelScreen> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Floating Action Wheel Demo'),
      ),
      body: Center(
        child: Text('Swipe up from the bottom-right corner to open the FAB Wheel'),
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
      floatingActionButton: FloatingActionWheel(
        child: FloatingActionButton(
          backgroundColor: Colors.blue,
          onPressed: () {},
          child: Icon(Icons.add),
        ),
        items: [
          FloatingActionButton(
            backgroundColor: Colors.red,
            onPressed: () {
              // Handle first action
              ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Action 1')));
            },
            child: Icon(Icons.star),
          ),
          FloatingActionButton(
            backgroundColor: Colors.green,
            onPressed: () {
              // Handle second action
              ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Action 2')));
            },
            child: Icon(Icons.camera),
          ),
          FloatingActionButton(
            backgroundColor: Colors.yellow,
            onPressed: () {
              // Handle third action
              ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Action 3')));
            },
            child: Icon(Icons.send),
          ),
        ],
        onOpened: () {
          print('FAB Wheel opened');
        },
        onClosed: () {
          print('FAB Wheel closed');
        },
      ),
      bottomNavigationBar: BottomNavigationBar(
        items: [
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: 'Home',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.settings),
            label: 'Settings',
          ),
        ],
      ),
    );
  }
}

在这个示例中,我们创建了一个包含FAB Wheel的Flutter应用。FAB Wheel包含三个动作按钮,每个按钮都有不同的颜色和图标。当用户从右下角向上滑动时,FAB Wheel会展开,显示这些动作按钮。点击任何一个动作按钮时,会显示一个SnackBar作为反馈。

注意,floatingActionButtonLocation属性被设置为FloatingActionButtonLocation.centerDocked,这是为了让FAB Wheel在底部导航栏上方居中停靠。如果你不需要底部导航栏,可以移除bottomNavigationBar属性或将其设置为null

希望这个示例对你有所帮助!如果有其他问题,请随时提问。

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