Why cannot I run ADT when I import an older version of Eclipse project?

Because Google has updated the new development environment, it is actually not new, that is, bundling eclipse and ADT plug-ins together, you can download them directly. The name is ADT, is: http://developer.android.com/sdk/installing/bundle.html ADT version is 22.1

In this case, a problem occurs. When the Eclipse project we used was imported to ADT, it sometimes failed to start. The error is cannot initiate componet ...... cannot find classloder.

This problem is very strange. Find out why it is caused by the classpath problem of the new ADT.

Solution: Delete the classpath file when the original project is imported, generate a new one, and then build the project to run. This error is very strange. I hope the developers can get ashore early.