WP8 - 推送通知的计划任务代理

Question

我正在尝试将我的应用与推送通知交互，而后端开发人员选择 Pusher 作为通知提供者。

.NET SDK 很乱，不整洁，同步，在 WP8 上不工作，所以我重写了它，现在可以正常工作了。

问题是：获取推送通知和更新磁贴/吐司是否需要计划任务？或者有什么最好的方法？

很遗憾，我无法更改推送提供者。

Answer 1

您只需将 Tile 和 Toast 推送通知发送到手机，即使您的应用程序未运行，它们也能正常工作。你不需要后台任务。

以下是我在桌面应用程序中用于向 Windows Phone 8.0 发送推送通知的示例代码：

const String toastTemplate =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<wp:Notification xmlns:wp=\"WPNotification\">" +
"<wp:Toast>" +
"<wp:Text1>{0}</wp:Text1>" +
"<wp:Text2>{1}</wp:Text2>" +
"<wp:Param>{2}</wp:Param>" +
"</wp:Toast>" +
"</wp:Notification>";


String message = String.Format(toastTemplate, "Test", "updated: " + DateTime.Now.ToString(), "/Pages/SyncPage.xaml");
Status = await PushNotifiactionsManager.SendNotification(cfg.PushNotificationUri, message, 2);



public static async Task<string> SendNotification(string pushNotificationUri, string message, short notificationClass)
{
  String responseText;
  if (message.Length > 3072)
  {
    responseText = String.Format("The message must be <= 3072 bytes: {0}", message);
  }
  else
  {
    HttpClient request = new HttpClient();
    // Add message headers.
    request.DefaultRequestHeaders.Add("X-MessageID", Guid.NewGuid().ToString());
    request.DefaultRequestHeaders.Add("X-NotificationClass", notificationClass.ToString());
    if (notificationClass == 1)
    {
      request.DefaultRequestHeaders.Add("X-WindowsPhone-Target", "token");
    }
    else if (notificationClass == 2)
    {
      request.DefaultRequestHeaders.Add("X-WindowsPhone-Target", "toast");
    }
    try
    {
      // Send the message, and wait for the response.
      HttpResponseMessage response = await request.PostAsync(pushNotificationUri, new StringContent(message));
      IEnumerable<string> values;
      String connectionStatus = String.Empty;
      if (response.Headers.TryGetValues("X-DeviceConnectionStatus", out values))
      {
        connectionStatus = values.First();
      }
      String subscriptionStatus = String.Empty;
      if (response.Headers.TryGetValues("X-SubscriptionStatus", out values))
      {
        subscriptionStatus = values.First();
      }
      String notificationStatus = String.Empty;
      if (response.Headers.TryGetValues("X-NotificationStatus", out values))
      {
        notificationStatus = values.First();
      }
      responseText = String.Format("{0}: {1}, {2}, {3}, {4}",
        notificationClass == 1 ? "Tile" :
        notificationClass == 2 ? "Toast" : "Raw",
        response.StatusCode,
        connectionStatus, subscriptionStatus, notificationStatus);
    }
    catch (WebException ex)
    {
      responseText = ex.Message;
    }
  }

  return "Notification response: " + responseText;
}