可以使用firebase_messaging和awesome_notifications
在你的firebase后台订阅处理程序中添加这个

await AwesomeNotifications().createNotification(
  content: NotificationContent(
    id: createuniqueId(),
    channelKey: 'basic_channel',
    title: message.data['title'],
    body: message.data['body'],
    wakeUpScreen: true,
    fullScreenIntent: true,
    autoDismissible: false,
    category: NotificationCategory.Call,
    locked: true,
    displayOnForeground: true,
  ),
  actionButtons: [
    NotificationActionButton(
      key: 'accept',
      label: 'Accept',
    ),
    NotificationActionButton(
      isDangerousOption: true,
      key: 'reject',
      label: 'Reject',
    ),
  ],
);

在main（）中添加此内容

AwesomeNotifications().initialize(
    'resource://drawable/ic_icon',
    [
      NotificationChannel(
        channelKey: 'basic_channel', 
        channelName: 'Basic Notification', 
        channelDescription: 'Hello world',
        importance: NotificationImportance.High,
        channelShowBadge: true,
        vibrationPattern: highVibrationPattern
      ),
    ]
  );

flutter_local_notifications示例：
机器人

Future<void> _showNotificationWithActions() async {
  const AndroidNotificationDetails androidNotificationDetails =
      AndroidNotificationDetails(
    '...',
    '...',
    '...',
    actions: <AndroidNotificationAction>[
      AndroidNotificationAction('id_1', 'Action 1'),
      AndroidNotificationAction('id_2', 'Action 2'),
      AndroidNotificationAction('id_3', 'Action 3'),
    ],
  );
  const NotificationDetails notificationDetails =
      NotificationDetails(android: androidNotificationDetails);
  await flutterLocalNotificationsPlugin.show(
      0, '...', '...', notificationDetails);
}

伊奥斯

final DarwinInitializationSettings initializationSettingsDarwin = DarwinInitializationSettings(
    // ...
    notificationCategories: [
    const DarwinNotificationCategory(
        'demoCategory',
        <DarwinNotificationAction>[
            DarwinNotificationAction('id_1', 'Action 1'),
            DarwinNotificationAction(
            'id_2',
            'Action 2',
            options: <DarwinNotificationActionOption>{
                DarwinNotificationActionOption.destructive,
            },
            ),
            DarwinNotificationAction(
            'id_3',
            'Action 3',
            options: <DarwinNotificationActionOption>{
                DarwinNotificationActionOption.foreground,
            },
            ),
        ],
        options: <DarwinNotificationCategoryOption>{
            DarwinNotificationCategoryOption.hiddenPreviewShowTitle,
        },
    )
],

在iOS上，需要在使用initialize方法启动应用程序之前配置通知操作