I'm using a default Eclipse project file generated for my Android application, and I want to keep it in a targets/ directory (along with other eclipse-specific files) in order to better organize my project structure (I also plan on adding a target for NetBeans).
Simple question, I suppose: Is this possible?
You can define target or output destination by change the output folder. I guess you can do that by change the dir path under Property of the Android project.
If you want to reorganize all your Eclipse projects, you can create a new workplace (Files/Switch workplace) and start creating new projects from now on.
Coming back to this question, Ryan Conrad is correct in that Eclipse needs the .project files in the root of the project directory. As such it is not possible to move it elsewhere.
来源：https://stackoverflow.com/questions/3058448/place-eclipse-project-file-in-separate-directory