Flutter本地通知插件flutter_local_notifications_linux的使用

发布于 1周前 作者 caililin 来自 Flutter

Flutter本地通知插件flutter_local_notifications_linux的使用

简介

flutter_local_notifications_linux 是 flutter_local_notifications 插件在Linux平台上的实现。这个插件允许开发者在Flutter应用中为Linux桌面环境添加本地通知功能。

使用方法

添加依赖

由于 flutter_local_notifications_linux 是 flutter_local_notifications 包的一部分，因此你只需要在 pubspec.yaml 文件中添加 flutter_local_notifications 作为依赖：

dependencies:
  flutter:
    sdk: flutter
  flutter_local_notifications: ^latest_version

确保将 latest_version 替换为最新版本号。

初始化插件

接下来，在你的Dart代码中初始化插件。以下是一个完整的示例demo，展示了如何设置和显示一个简单的本地通知。

完整示例代码

  1. 导入必要的包

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

  2. 初始化FlutterLocalNotificationsPlugin

    在应用程序的入口处（如 main.dart）初始化 FlutterLocalNotificationsPlugin：

    void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  
  // 创建FlutterLocalNotificationsPlugin实例
  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();

  // 设置Android、iOS和Linux的通知渠道
  const AndroidInitializationSettings initializationSettingsAndroid =
      AndroidInitializationSettings('@mipmap/ic_launcher');
  final InitializationSettings initializationSettings = InitializationSettings(
    android: initializationSettingsAndroid,
    linux: LinuxInitializationSettings(defaultActionName: 'Open notification'),
  );

  // 初始化插件
  await flutterLocalNotificationsPlugin.initialize(initializationSettings);

  runApp(MyApp(flutterLocalNotificationsPlugin));
}

  3. 创建并显示通知

    在你需要显示通知的地方调用相应的方法。例如，在按钮点击事件中显示通知：

    class MyApp extends StatelessWidget {
  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;

  MyApp(this.flutterLocalNotificationsPlugin);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Flutter Local Notifications Demo')),
        body: Center(
          child: ElevatedButton(
            onPressed: () async {
              // 设置通知详情
              const AndroidNotificationDetails androidPlatformChannelSpecifics =
                  AndroidNotificationDetails(
                'your_channel_id',
                'your_channel_name',
                importance: Importance.max,
                priority: Priority.high,
                showWhen: false,
              );
              const NotificationDetails platformChannelSpecifics =
                  NotificationDetails(android: androidPlatformChannelSpecifics, linux: LinuxNotificationDetails());

              // 显示通知
              await flutterLocalNotificationsPlugin.show(
                0,
                'Hello World',
                'This is a notification from Linux!',
                platformChannelSpecifics,
                payload: 'item x',
              );
            },
            child: Text('Show Notification'),
          ),
        ),
      ),
    );
  }
}

  4. 处理通知点击事件

    如果你需要处理用户点击通知后的操作，可以在初始化时提供一个回调函数：

    final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();

// ...

await flutterLocalNotificationsPlugin.initialize(initializationSettings,
    onSelectNotification: (String? payload) async {
  if (payload != null) {
    debugPrint('notification payload: $payload');
  }
  // 打开新页面或执行其他操作
});

通过以上步骤，你就可以在Linux平台上使用 flutter_local_notifications 插件来显示本地通知了。希望这个示例能帮助你更好地理解和使用该插件。


请注意，为了使上述代码正常工作，还需要确保项目配置正确，并且已经安装了必要的依赖项。此外，根据具体需求，你可能需要调整通知渠道和其他设置。

更多关于Flutter本地通知插件flutter_local_notifications_linux的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html

Harmonyos Next教程
1 回复

更多关于Flutter本地通知插件flutter_local_notifications_linux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，下面是一个关于如何在Flutter项目中使用flutter_local_notifications_linux插件来实现本地通知的示例代码。这个插件允许你在Linux平台上发送本地通知。

首先，确保你已经在pubspec.yaml文件中添加了flutter_local_notifications及其Linux平台的依赖：

dependencies:
  flutter:
    sdk: flutter
  flutter_local_notifications: ^9.0.0  # 请检查最新版本号

dependency_overrides:
  flutter_local_notifications_linux: ^0.3.0  # 请检查最新版本号，可能需要覆盖依赖以匹配主包版本

然后，在Linux平台上进行初始化和发送通知的代码如下：

  1. 主应用入口文件（main.dart）
import 'package:flutter/material.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();

  var initializationSettingsAndroid = AndroidInitializationSettings('@mipmap/ic_launcher');
  var initializationSettingsIOS = IOSInitializationSettings(
      requestAlertPermission: true,
      requestBadgePermission: true,
      requestSoundPermission: true,
      onDidReceiveLocalNotification: onDidReceiveLocalNotification);
  var initializationSettingsMacOS = MacOSInitializationSettings();
  var initializationSettingsLinux = LinuxInitializationSettings();

  var initializationSettings = InitializationSettings(
      android: initializationSettingsAndroid,
      iOS: initializationSettingsIOS,
      macOS: initializationSettingsMacOS,
      linux: initializationSettingsLinux);

  flutterLocalNotificationsPlugin.initialize(initializationSettings,
      onSelectNotification: onSelectNotification);

  runApp(MyApp());
}

Future<void> onSelectNotification(String? payload) async {
  if (payload != null) {
    showDialog(
      context: navigatorKey.currentContext!,
      builder: (_) {
        return AlertDialog(
          title: Text('Payload'),
          content: Text(payload),
        );
      },
    );
  }
}

Future<void> onDidReceiveLocalNotification(
    int id, String? title, String? body, String? payload) async {
  // 显示一个基本的对话框
  showDialog(
    context: navigatorKey.currentContext!,
    builder: (_) {
      return AlertDialog(
        title: Text(title ?? ''),
        content: Text(body ?? ''),
      );
    },
  );
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Local Notifications Demo')),
        body: Center(
          child: ElevatedButton(
            onPressed: () async {
              _showNotificationWithDefaultSound(context);
            },
            child: Text('Show Notification'),
          ),
        ),
      ),
    );
  }
}

Future<void> _showNotificationWithDefaultSound(BuildContext context) async {
  var flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();

  var androidPlatformChannelSpecifics = AndroidNotificationDetails(
      'your channel id',
      'your channel name',
      'your channel description',
      importance: Importance.max,
      priority: Priority.high,
      channelShowBadge: true);
  var iOSPlatformChannelSpecifics = IOSNotificationDetails();
  var macOSPlatformChannelSpecifics = MacOSNotificationDetails();
  var linuxPlatformChannelSpecifics = LinuxNotificationDetails();

  var platformChannelSpecifics = NotificationDetails(
      android: androidPlatformChannelSpecifics,
      iOS: iOSPlatformChannelSpecifics,
      macOS: macOSPlatformChannelSpecifics,
      linux: linuxPlatformChannelSpecifics);

  await flutterLocalNotificationsPlugin.show(
      0, 'Plain Title', 'Plain body', platformChannelSpecifics,
      payload: 'item x');
}
  1. Linux 特定的初始化设置

在Linux上，你不需要像Android或iOS那样提供图标资源，但确保你已经按照Flutter的Linux开发要求设置了项目。

  1. 运行项目

确保你的Flutter环境已经配置好Linux开发，然后运行以下命令来编译和运行你的应用：

flutter config --enable-linux-desktop
flutter run -d linux

这个示例展示了如何在Flutter应用中初始化flutter_local_notifications_linux插件，并发送一个简单的本地通知。你可以根据实际需求进一步定制通知的内容和行为。

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