我最近更新了我的Android项目中的NuGet包，现在我在这段代码中获得了一条消息：
ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences(Application.Context);
CS0618: PreferenceManager.GetDefaultSharedPreferences(Context?)已经过时：不建议使用
需要做出改变吗？像这样我的代码是否无法正确工作？我是否应该完全删除private void storeToken(String token)？我不确定我是否仍然需要private void storeToken(String token)。
using System;
using Android.App;
using Android.Content;
using Android.Util;
using Firebase.Messaging;
using System.Collections.Generic;
using Android.Preferences;
using Android.Media;
using AndroidX.Core.App;
namespace AndroidVersion
{
[Service]
[IntentFilter(new[] { "com.google.firebase.MESSAGING_EVENT" })]
public class MyFirebaseMessagingService : FirebaseMessagingService
{
const string TAG = "MyFirebaseMsgService";
public override void OnNewToken(string token)
{
Log.Debug(TAG, "Refreshed token: " + token);
storeToken(token);
}
private void storeToken(String token)
{
//saving the token on shared preferences
ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences(Application.Context);
ISharedPreferencesEditor editor = prefs.Edit();
editor.PutString("my_token", token);
editor.Apply();
}
public override void OnMessageReceived(RemoteMessage message)
{
Log.Debug(TAG, "From: " + message.From);
var body = message.GetNotification().Body;
var title = message.GetNotification().Title;
Log.Debug(TAG, "Notification Message Body: " + message.GetNotification().Body);
SendNotification(body, title, message.Data);
}
void SendNotification(string messageBody, string Title, IDictionary<string, string> data)
{
var intent = new Intent(this, typeof(Activity1));
intent.AddFlags(ActivityFlags.ClearTop);
foreach (var key in data.Keys)
{
intent.PutExtra(key, data[key]);
}
var pendingIntent = PendingIntent.GetActivity(this,
Activity1.NOTIFICATION_ID,
intent,
PendingIntentFlags.OneShot);
var notificationBuilder = new NotificationCompat.Builder(this, Activity1.CHANNEL_ID)
.SetSmallIcon(Resource.Drawable.Icon)
.SetContentTitle(Title)
.SetContentText(messageBody)
.SetSound(RingtoneManager.GetDefaultUri(RingtoneType.Notification))
.SetVibrate(new long[] { 1000, 1000, 0, 0, 0 })
.SetLights(Android.Graphics.Color.Red, 3000, 3000)
.SetPriority((int)NotificationPriority.High)
.SetAutoCancel(true)
.SetContentIntent(pendingIntent);
var notificationManager = NotificationManagerCompat.From(this);
notificationManager.Notify(Activity1.NOTIFICATION_ID, notificationBuilder.Build());
}
}
}