如何在应用程序关闭后运行通知按钮的点击活动

Question

我有一个提醒应用程序。当时间到来时，会显示上述提醒的通知。我有一个“完成”按钮，可以从数据库中删除提醒。

从数据库中删除提醒在应用程序处于后台时有效，但在应用程序关闭时无效。

关闭后，我点击通知上的“完成”按钮并打开应用程序进行检查，仍然可以看到本应删除的提醒。

这是我的 notification.dart 文件的代码：

import 'package:awesome_notifications/awesome_notifications.dart';
import 'package:nagger/data/reminders_data.dart';
// import 'package:timezone/timezone.dart' as tz;

class NotificationController {
  // final notificationsPlugin = AwesomeNotifications();
  static ReceivedAction? initialAction;
  static void Function()? refreshHomePageCallback;

  static Future<void> initializeLocalNotifications() async {
    await AwesomeNotifications().initialize(
      null,
      [
        NotificationChannel(
          channelKey: '111', 
          channelName: 'nice_channel_name',
          channelDescription: 'Shows Reminder Notification',
        )
      ],
    ); 

    initialAction = await AwesomeNotifications()
      .getInitialNotificationAction(removeFromActionEvents: false);
  }

  static void initializeCallback(void Function() func) {
    refreshHomePageCallback = func;
  }

  static Future<void> showNotification(String notifTitle) async {
    await AwesomeNotifications().createNotification(
      content: NotificationContent(
        id: 0, 
        channelKey: '111',
        title: notifTitle,
      ),
      actionButtons: [
        NotificationActionButton(
          key: 'done', 
          label: 'Done'
        )
      ]
    );
  }

  Future<bool> scheduleNotification(
    int notifID,
    String notifTitle, 
    DateTime scheduleNotificationDateTime
  ) async {
    return await AwesomeNotifications().createNotification(
      content: NotificationContent(
        id: notifID, 
        channelKey: '111',
        title: notifTitle,
        payload: {
          "App name": "Nagger"
        },
        autoDismissible: false
      ),
      actionButtons: [
        NotificationActionButton(
          key: 'done', 
          label: 'Done',
          actionType: ActionType.SilentBackgroundAction
        ),
      ],
      schedule: NotificationCalendar(
        year: scheduleNotificationDateTime.year,
        month: scheduleNotificationDateTime.month,
        day: scheduleNotificationDateTime.day,
        hour: scheduleNotificationDateTime.hour,
        minute: scheduleNotificationDateTime.minute,
        second: scheduleNotificationDateTime.second,
        millisecond: scheduleNotificationDateTime.millisecond
      )
    );
  }

  Future<void> cancelScheduledNotification(int id) async {
    await AwesomeNotifications().cancel(id);
    print("$id cancelled scheduled notification.");
  }

  static Future<void> startListeningNotificationEvents() async {
    AwesomeNotifications().setListeners(onActionReceivedMethod: onActionReceivedMethod);
  }

  static Future<void> onActionReceivedMethod(
    ReceivedAction receivedAction
  ) async {
  
    if (receivedAction.buttonKeyPressed == 'done') {
      final db = RemindersData();
      db.deleteReminder(receivedAction.id ?? 7);
      // refreshHomePageCallback!();
    }
    else 
    {
      print("Unknown action with notification.");
    }
  }
}

如何在应用程序关闭时使其正常运行？

Answer 1

try {
      var response = await http.get(Uri.parse(url));
      if (Platform.isAndroid) {
        await Permission.storage.request();
      }
      var status = await Permission.storage.status;
      if (!status.isGranted) {
        await Permission.storage.request();
      }
      if (response.statusCode == 200) {
        String fileName = 'certificate_$certificateNumber.pdf';
        const downloadsFolderPath = '/storage/emulated/0/Download/';
        Directory dir = Directory(downloadsFolderPath);
        File file = File('${dir.path}/$fileName');
        OpenFile.open(file.path);
    
        AwesomeNotifications().createNotification(
          actionButtons: [
            NotificationActionButton(
              key: 'OPEN',
              label: 'Open',
            ),
          ],
          content: NotificationContent(
            payload: {'PDF_Downloader': dir.path, 'file': fileName},
            id: 1,
            channelKey: "PDF_Downloader",
            title: "Certificate Downloaded",
            body: "PDF has been downloaded successfully in Download Folder",
          ),
        );
    
        await file.writeAsBytes(response.bodyBytes);
        String date = DateTime.now().toString();
        setState(() {
          verificationDate = date;
        });

这是下载 PDF 文件并显示 PDF 已成功下载的通知并提供打开它的选项的示例，因此，我已将有效负载传递给通知

在您的情况下，您必须提供频道密钥，并且必须为您的特定功能创建一个函数，并替换此处输入代码的位置dir.path

我希望它会起作用。