Wp7:推送通知通道URI为空



我们正在尝试测试推送通知,使用文档中的最新代码如何:为Windows Phone设置通知通道

public HttpNotificationChannel myChannel;
public void CreatingANotificationChannel()
{
  myChannel = HttpNotificationChannel.Find("MyChannel");
  if (myChannel == null)
  {
    myChannel = new HttpNotificationChannel("MyChannel","www.contoso.com");
    // An application is expected to send its notification channel URI to its corresponding web service each time it launches.
    // The notification channel URI is not guaranteed to be the same as the last time the application ran.
    myChannel.ChannelUriUpdated += new EventHandler<NotificationChannelUriEventArgs>(myChannel_ChannelUriUpdated);
    myChannel.Open();
  }
  else // Found an existing notification channel.
  {
    // The URI that the application sends to its web service.
    Debug.WriteLine("Notification channel URI:" + myChannel.ChannelUri.ToString());
  }
  myChannel.HttpNotificationReceived += new EventHandler<HttpNotificationEventArgs>(myChannel_HttpNotificationReceived);
  myChannel.ShellToastNotificationReceived += new EventHandler<NotificationEventArgs>(myChannel_ShellToastNotificationReceived);
  myChannel.ErrorOccurred += new EventHandler<NotificationChannelErrorEventArgs>(myChannel_ErrorOccurred);
}

如果HttpNotificationChannel.Find()返回null,它打开一个新的通道,但永远不会触发ChannelUriUpdated事件。

如果HttpNotificationChannel.Find()返回一个通道,则ChannelUri属性为空。示例代码在这里崩溃,因为它假设ChannelUri属性不为空。

这两种情况都不会触发ErrorOccurred事件。

我该如何解决这个问题?这个问题是因为微软服务器还是别的什么?

提前考虑

编辑等待重播,十天后我是空uri问题的痛苦有谁能告诉我如何解决这个问题,有时MSPN服务器给出通道uri,有时不是,我的意思是有时它给出空引用异常。微软在做什么?

如果我没有出错,www.contoso.com这是一个示例URI,用于演示您需要放置自己的服务器URL地址,但根据我的经验,我从未以这种方式使用过。我更喜欢写

myChannel = new HttpNotificationChannel("MyChannel");

看这个例子(它是西班牙语的),但是代码非常清楚你需要做什么来设置推送通知客户端和服务。

我希望我帮到你了。

你正在测试什么移动模拟器,你有windows手机开发的开发者账户订阅吗?如果开发者解锁了你的手机,

Noorul。

根据文档,我认为问题是您正在使用经过身份验证的web服务的HttpNotificationChannel构造函数。

相反,您应该使用只接受一个参数的构造函数,正如您可以在本例 中检查的那样。
/// Holds the push channel that is created or found.
HttpNotificationChannel pushChannel;
// The name of our push channel.
string channelName = "ToastSampleChannel";
// Try to find the push channel.
pushChannel = HttpNotificationChannel.Find(channelName);
// If the channel was not found, then create a new connection to the push service.
if (pushChannel == null)
{
    pushChannel = new HttpNotificationChannel(channelName);
    ...
}

希望有所帮助