我试图在某个时间创建通知，但它不起作用。代码不会抛出任何错误，但不会在设备上显示任何通知。我用的是flutter_local_notifications
生成通知的代码：

Future<void> showNotification(
  int hour, int id, String title, String body) async {
await flutterLocalNotificationsPlugin.zonedSchedule(
  id,
  title,
  body,
  _convertTime(hour),
  const NotificationDetails(
    android: AndroidNotificationDetails('main_channel', 'Main Channel',
        channelDescription: "ashwin",
        importance: Importance.max,
        priority: Priority.max),
    iOS: IOSNotificationDetails(
      sound: 'default.wav',
      presentAlert: true,
      presentBadge: true,
      presentSound: true,
    ),
  ),
  uiLocalNotificationDateInterpretation:
      UILocalNotificationDateInterpretation.absoluteTime,
  androidAllowWhileIdle: true,
);
}

_converTime函数代码：

TZDateTime _convertTime(int hour) {
final tz.TZDateTime now = tz.TZDateTime.now(tz.local);
tz.TZDateTime scheduleDate =
    tz.TZDateTime(tz.local, now.year, now.month, now.day, hour, 47);
return scheduleDate;
}

函数的结果正确，如下所示：2022-07-14 12：47：00.000Z
但是，如果不使用此函数，我将其更改为

Future<void> showNotification(
  int hour, int id, String title, String body) async {
await flutterLocalNotificationsPlugin.zonedSchedule(
  id,
  title,
  body,
  // _convertTime(hour), // this does not work
  tz.TZDateTime.now(tz.local).add(Duration(seconds: 1)), // this work
  const NotificationDetails(
    android: AndroidNotificationDetails('main_channel', 'Main Channel',
        channelDescription: "ashwin",
        importance: Importance.max,
        priority: Priority.max),
    // iOS details
    iOS: IOSNotificationDetails(
      sound: 'default.wav',
      presentAlert: true,
      presentBadge: true,
      presentSound: true,
    ),
  ),

  uiLocalNotificationDateInterpretation:
      UILocalNotificationDateInterpretation.absoluteTime,
  androidAllowWhileIdle: true,
);
}

我不明白会发生什么事。我很感激任何提前帮助。