Xamarin服務通知無法啓動

Question

我有下面的代碼發送通知，但我沒有看到通知發送時，我開始我的應用程序。我錯過了什麼嗎？

[Service] 
public class MyService : Service 
{ 

    const int NOTIFICATION_ID = 9000; 

    public override IBinder OnBind(Intent intent) 
    { 
     return null; 
    } 

    public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId) 
    { 
     // Code omitted for clarity - here is where the service would do something. 

     // Work has finished, now dispatch anotification to let the user know. 
     Notification.Builder notificationBuilder = new Notification.Builder(this) 
      // .SetSmallIcon(Resource.Drawable.ic_notification_small_icon) 
      // .SetContentTitle(Resources.GetString(Resource.String.notification_content_title)) 
      .SetContentTitle("Comic Pull App") 
      //.SetContentText(Resources.GetString(Resource.String.notification_content_text)); 
      .SetContentText("New Comics came out this week. Repull this month if needed."); 
     var notificationManager = (NotificationManager)GetSystemService(NotificationService); 
     notificationManager.Notify(NOTIFICATION_ID, notificationBuilder.Build()); 

     return StartCommandResult.Sticky; 
    } 

我有以下我MainActivity：

StartService(new Intent(this, typeof(MyService))); 

我有以下我的清單文件：

<application android:label="ToolbarFun" android:theme="@style/MyTheme"> 
    <service android:name=".MyService" android:exported="false" android:enabled="true"/> 
</application> 

Answer 1

，但我沒有看到通知時發送我開始申請。我錯過了什麼嗎？

如果不使用SetSmallIcon()方法，則無法做到這一點。您必須設置Notification的圖標，然後才能發送Notification。