Xamarin表格应用程式在关闭应用程式后1天后仍未收到FCM通知

如何解决Xamarin表格应用程式在关闭应用程式后1天后仍未收到FCM通知

我有xamarin表单应用程序，该应用程序具有使用Firebase FCM应用程序从.net核心后端发送的通知，在应用程序的前台和后台以及应用程序关闭的头几个小时内，它们会收到很好的通知，但是如果我不打开该应用程序，则会出现问题有一天，然后发送通知，直到我打开应用程序然后通知到达，应用程序才收到通知（注意：当应用程序打开时，不更新Firebase设备令牌）我在Android中使用PushNotificationPlugin处理通知和这种情况。

清单代码：

   <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="2" android:versionName="1.2" package="com.QuranMajead.android" android:installLocation="auto">
    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="29" />
    <application android:label="QuranMajead" android:usesCleartextTraffic="true" android:icon="@drawable/ic_launcher">
        <uses-library android:name="org.apache.http.legacy" android:required="false" />
        <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />
        <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
                <category android:name="${applicationId}" />
            </intent-filter>
        </receiver>
    </application>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
</manifest>

主应用程序类

     [Application]
public class MainApplication : Application
{
    public MainApplication(IntPtr handle,JniHandleOwnership transer) : base(handle,transer)
    {
    }

    public override void OnCreate()
    {
        base.OnCreate();
        //Set the default notification channel for your app when running Android Oreo
        if (Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O)
        {
            //Change for your default notification channel id here
            Pushnotificationmanager.DefaultNotificationChannelId = "QuranMajeadChannel";

            //Change for your default notification channel name here
            Pushnotificationmanager.DefaultNotificationChannelName = "QuranMajeadChannelName";
        }

        //If debug you should reset the token each time.
#if DEBUG
        Pushnotificationmanager.Initialize(this,true);
#else
        Pushnotificationmanager.Initialize(this,false);
#endif
        var data = Intent.ExtraIntent;
        //Handle notification when app is closed here
        CrosspushNotification.Current.OnNotificationReceived += (s,p) =>
        {

        };

        CrosspushNotification.Current.OnTokenRefresh += (s,p) =>
        {
            Preferences.Set("Devicetoken",p.Token);
        };

        CrosspushNotification.Current.OnNotificationopened += (s,p) =>
        {

            System.Diagnostics.Debug.WriteLine($"Opened Notification : {p.Data}");

        };
    }

}

谢谢。