App Engine的连接Android应用 [英] App engine connected Android app

问题描述

问题与连接的Andr​​oid应用项目为谷歌的Eclipse插件的新的App引擎？这是在Google网上显示的大爸爸样品I / O 2011年我的示例项目编译和Android应用程序似乎正常工作，并与服务器注册。然而，当我从服务器发送一个消息，我得到以下几点：样本项目有问题。 Android的出现很好地工作，并与服务器和C2DM服务器注册了，但是我无法发送消息。

Problem with the new App engine connected android application projects for the google eclipse plugin? This is the "Big Daddy" sample shown at goolge i/o 2011. My sample project compiles and the android app appears to work fine and registers with the server. However when I send a message from the server I get the following: Having issue with sample project. Android appears to work fine and registers with the server and the c2dm server, however I cannot send a message.

另外值得注意的服务器上的是一个c2dmconfig数据存储对象。它拥有的authToken和c2dmUrl领域。该的authToken有一个道理，但是c2dmUrl为NULL。我怀疑这是我的问题所在，但不知道如何解决它。

Also of note on the server is a c2dmconfig datastore object. It has fields for authToken and c2dmUrl. The authToken has a token, however the c2dmUrl is NULL. I suspect this is where my problem lies, but not sure how to fix it.

感谢帕特里克

推荐答案

我被知道同样的事情，如果c2dmUrl被空出了问题发现了这个问题。这似乎是，这不是一个问题，虽然。如果你看一下C2DMConfig（所引用的实体），有一个名为getC2DMUrl功能。在这里，它是：

I found this question by wondering the same thing, if the c2dmUrl being null is a problem. It would seem that this is not an issue though. If you look at the C2DMConfig (the entity that you are referencing), there is a function called "getC2DMUrl". Here it is:

public String getC2DMUrl() {
  if (c2dmUrl == null) {
  return DATAMESSAGING_SEND_ENDPOINT;
} else {
  return c2dmUrl;
}

所以空是该支持的值。如果没有指定特定的URL时，它只是它返回到默认值。

So null is a supported value for this. If a specific URL isn't specified, it simply returns it to the default.

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