Flutter日程管理插件calendar_agenda的使用

Flutter日程管理插件calendar_agenda的使用

介绍

calendar_agenda 是一个带有多种可定制样式的日程管理小部件。

安装

  1. 依赖安装pubspec.yaml 文件中添加依赖:

    dependencies:
      flutter:
        sdk: flutter
      calendar_agenda: <version>
    
  2. 安装包 运行以下命令以安装包:

    flutter pub get
    
  3. 导入库 在你的项目中导入库:

    import 'package:calendar_agenda/calendar_agenda.dart';
    

样式示例

选中日期位置

  • 中心
  • 左边
  • 右边

日历滚动方向

  • 垂直滚动
  • 水平滚动

示例代码

下面是一个完整的示例代码,展示如何在 Flutter 应用中使用 calendar_agenda 插件。

import 'dart:math';

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: ExamplePage(),
    );
  }
}

class ExamplePage extends StatefulWidget {
  const ExamplePage({Key? key}) : super(key: key);

  [@override](/user/override)
  _ExamplePageState createState() => _ExamplePageState();
}

class _ExamplePageState extends State<ExamplePage> {
  CalendarAgendaController _calendarAgendaControllerAppBar = CalendarAgendaController();
  CalendarAgendaController _calendarAgendaControllerNotAppBar = CalendarAgendaController();

  late DateTime _selectedDateAppBBar;
  late DateTime _selectedDateNotAppBBar;

  Random random = new Random();

  [@override](/user/override)
  void initState() {
    super.initState();
    _selectedDateAppBBar = DateTime.now();
    _selectedDateNotAppBBar = DateTime.now();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Calendar Agenda Example'),
      ),
      body: SingleChildScrollView(
        child: Column(
          children: [
            CalendarAgenda(
              controller: _calendarAgendaControllerAppBar,
              appbar: true,
              selectedDayPosition: SelectedDayPosition.right,
              leading: IconButton(
                icon: Icon(Icons.arrow_back_ios_new, color: Colors.white),
                onPressed: () {},
              ),
              weekDay: WeekDay.long,
              fullCalendarScroll: FullCalendarScroll.horizontal,
              fullCalendarDay: WeekDay.long,
              selectedDateColor: Colors.green.shade900,
              locale: 'id',
              initialDate: DateTime.now(),
              calendarEventColor: Colors.green,
              firstDate: DateTime.now().subtract(Duration(days: 140)),
              lastDate: DateTime.now().add(Duration(days: 60)),
              events: List.generate(
                100,
                (index) => DateTime.now().subtract(Duration(days: index * random.nextInt(5))),
              ),
              onDateSelected: (date) {
                setState(() {
                  _selectedDateAppBBar = date;
                });
              },
              calendarLogo: Image.network(
                'https://www.kindpng.com/picc/m/355-3557482_flutter-logo-png-transparent-png.png',
                scale: 5.0,
              ),
              selectedDayLogo: NetworkImage(
                'https://www.kindpng.com/picc/m/355-3557482_flutter-logo-png-transparent-png.png',
                scale: 15.0,
              ),
            ),
            ElevatedButton(
              onPressed: () {
                _calendarAgendaControllerAppBar.goToDay(DateTime.now());
              },
              child: Text("Today, appbar = true"),
            ),
            Text('Selected date is $_selectedDateAppBBar'),
            SizedBox(height: 20.0),
            CalendarAgenda(
              controller: _calendarAgendaControllerNotAppBar,
              leading: SizedBox(
                width: MediaQuery.of(context).size.width * 0.3,
                child: Text(
                  "Agenda anda hari ini adalah sebagai berikut",
                  style: TextStyle(color: Colors.white),
                  overflow: TextOverflow.ellipsis,
                ),
              ),
              // fullCalendar: false,
              locale: 'en',
              weekDay: WeekDay.long,
              fullCalendarDay: WeekDay.short,
              selectedDateColor: Colors.blue.shade900,
              initialDate: DateTime.now(),
              firstDate: DateTime.now().subtract(Duration(days: 140)),
              lastDate: DateTime.now().add(Duration(days: 4)),
              events: List.generate(
                100,
                (index) => DateTime.now().subtract(Duration(days: index * random.nextInt(5))),
              ),
              onDateSelected: (date) {
                setState(() {
                  _selectedDateNotAppBBar = date;
                });
              },
              calendarLogo: Image.network(
                'https://www.kindpng.com/picc/m/355-3557482_flutter-logo-png-transparent-png.png',
                scale: 5.0,
              ),
            ),
            ElevatedButton(
              onPressed: () {
                _calendarAgendaControllerNotAppBar.goToDay(DateTime.now());
              },
              child: Text("Today, appbar = false (default value)"),
            ),
            Text('Selected date is $_selectedDateNotAppBBar'),
            SizedBox(height: 20.0),
          ],
        ),
      ),
    );
  }
}

更多关于Flutter日程管理插件calendar_agenda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日程管理插件calendar_agenda的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


在Flutter中,calendar_agenda 是一个用于显示和管理日程的插件。该插件提供了一个可滚动的日历视图,用户可以在其中查看和选择日期,并与日程安排进行交互。以下是如何在Flutter项目中使用 calendar_agenda 插件的步骤:

1. 添加依赖

首先,在你的 pubspec.yaml 文件中添加 calendar_agenda 插件的依赖:

dependencies:
  flutter:
    sdk: flutter
  calendar_agenda: ^0.2.0

然后运行 flutter pub get 来安装依赖。

2. 导入包

在你的 Dart 文件中导入 calendar_agenda 包:

import 'package:calendar_agenda/calendar_agenda.dart';

3. 使用 CalendarAgenda 组件

CalendarAgenda 组件中,你可以设置初始日期、选择日期时的回调函数以及其他自定义选项。

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

class _ScheduleScreenState extends State<ScheduleScreen> {
  CalendarAgendaController _calendarAgendaControllerAppBar =
      CalendarAgendaController();
  DateTime _selectedDate = DateTime.now();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Calendar Agenda'),
      ),
      body: Column(
        children: [
          CalendarAgenda(
            controller: _calendarAgendaControllerAppBar,
            appbar: false,
            selectedDayPosition: SelectedDayPosition.center,
            leading: IconButton(
              icon: Icon(Icons.arrow_back_ios),
              onPressed: () {},
            ),
            trailing: IconButton(
              icon: Icon(Icons.arrow_forward_ios),
              onPressed: () {},
            ),
            weekDay: WeekDay.short,
            initialDate: DateTime.now(),
            firstDate: DateTime.now().subtract(Duration(days: 140)),
            lastDate: DateTime.now().add(Duration(days: 60)),
            onDateSelected: (date) {
              setState(() {
                _selectedDate = date;
              });
            },
            calendarStyle: CalendarStyle(
              selectedColor: Colors.blue,
            ),
            calendarEventColor: Colors.red,
            backgroundColor: Colors.white,
            fullCalendar: false,
          ),
          Expanded(
            child: Center(
              child: Text(
                'Selected Date: ${_selectedDate.toString()}',
                style: TextStyle(fontSize: 20),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

4. 运行项目

运行你的 Flutter 项目,你将看到一个带有可滚动日历的界面。用户可以选择日期,并在 onDateSelected 回调中处理选中的日期。

5. 自定义选项

CalendarAgenda 提供了许多自定义选项,例如:

  • appbar: 是否显示 AppBar。
  • selectedDayPosition: 选中日期的位置。
  • leadingtrailing: 添加前导和尾部按钮。
  • weekDay: 星期的显示格式。
  • initialDate: 初始日期。
  • firstDatelastDate: 可选择的日期范围。
  • calendarStyle: 自定义日历的样式。
  • calendarEventColor: 日历事件的显示颜色。
  • backgroundColor: 背景颜色。
  • fullCalendar: 是否展开完整的日历。

6. 处理日期选择

onDateSelected 回调中,你可以处理用户选择的日期,并更新 UI 或执行其他操作。

onDateSelected: (date) {
  setState(() {
    _selectedDate = date;
  });
  // 执行其他操作,例如加载该日期的日程安排
},

7. 控制日历

你可以使用 CalendarAgendaController 来控制日历的行为,例如滚动到特定日期。

_calendarAgendaControllerAppBar.setSelectedDate(DateTime(2023, 10, 15));

8. 处理事件标记

你可以通过 CalendarEvent 类来标记特定日期的事件,并在日历中显示。

CalendarEvent event = CalendarEvent(date: DateTime(2023, 10, 15), eventTitle: 'Meeting');

CalendarAgenda(
  events: [event],
  // 其他属性
);

9. 自定义事件显示

你可以在 CalendarAgenda 中使用 eventBuilder 自定义事件的显示方式。

eventBuilder: (date, events) {
  return Center(
    child: Text(
      events.isNotEmpty ? events.first.eventTitle : '',
      style: TextStyle(color: Colors.white),
    ),
  );
},

10. 完整的示例

以下是一个完整的示例,展示了如何使用 calendar_agenda 插件:

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Calendar Agenda Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: ScheduleScreen(),
    );
  }
}

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

class _ScheduleScreenState extends State<ScheduleScreen> {
  CalendarAgendaController _calendarAgendaControllerAppBar =
      CalendarAgendaController();
  DateTime _selectedDate = DateTime.now();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Calendar Agenda'),
      ),
      body: Column(
        children: [
          CalendarAgenda(
            controller: _calendarAgendaControllerAppBar,
            appbar: false,
            selectedDayPosition: SelectedDayPosition.center,
            leading: IconButton(
              icon: Icon(Icons.arrow_back_ios),
              onPressed: () {},
            ),
            trailing: IconButton(
              icon: Icon(Icons.arrow_forward_ios),
              onPressed: () {},
            ),
            weekDay: WeekDay.short,
            initialDate: DateTime.now(),
            firstDate: DateTime.now().subtract(Duration(days: 140)),
            lastDate: DateTime.now().add(Duration(days: 60)),
            onDateSelected: (date) {
              setState(() {
                _selectedDate = date;
              });
            },
            calendarStyle: CalendarStyle(
              selectedColor: Colors.blue,
            ),
            calendarEventColor: Colors.red,
            backgroundColor: Colors.white,
            fullCalendar: false,
          ),
          Expanded(
            child: Center(
              child: Text(
                'Selected Date: ${_selectedDate.toString()}',
                style: TextStyle(fontSize: 20),
              ),
            ),
          ),
        ],
      ),
    );
  }
}
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