无法运行Google的示例-Android App Engine移动后端

Question

I am trying to run this example . I reached upto "Modify the Client Application" and I am then having the following errors (and below is my file organization screenshot:

At this stage, as you can see below, I have the following issues in MainActivity.java.

1. activity_main.xml is called out but the project in its layout folder only has activity_register.xml (see here )

2. "Checkinendpoint" class is undefined but there is a CheckInEndPoint.java in the "MobileAssistant-AppEngine" project, as you can see in the image below. Is that not supposed to get picked up in MainActivity.java - how to import that? (doesnt work like a normal library import, ie "MobileAssistant-AppEngine" is not a library that "MobileAssistant" can reference.

3. Same question as above for CheckIn class that is also undefinted in the picture below.

Answer 1

从Project-MobileAssistant删除deviceinfoendpoint-v1-generated-source和messageendpoint-v1-generated-source ，然后右键单击MobileAssistant-appengine项目，然后单击从Google Sub菜单生成Cloud EndPoint库。