Original: http://www.cnblogs.com/SkyD/archive/2010/11/25/1887219.html
The way to see the Eclipse Import project on the Internet is to use the import of the "Create project form existing source" option when creating a new Android program, although it can be implemented, but it feels like a cottage, and the imported project is still in place, Eclipse does not automatically copy it to the workspace directory, and if you pre-copy the item to the workspace directory and then import it, you will get an error indicating that there is already a project with the same name.
The correct import method should be to copy the project directory to the workspace directory first, and then do the following:
Select existing Projects into Workspace:
Browse and select the directory where the project is located:
Note that if you have not copied the project to the workspace directory before, you can also use this option in this window to have Eclipse help you copy the project to workspace:
Then click Finish to complete the import, of course, non-Android ordinary Java project can also be imported by this method.