Your project contains error (s), please fix them before running your application. Error summary

Reprinted from: http://blog.csdn.net/zhufuing/article/details/8135270

Android development problems are always diverse, today I come to summarize a waste of my one Night error T-t:your project contains error (s), please fix them before running your Application.

Summarize the various processing methods on the Internet:

2. Restart Eclipse (most of the netizens are so baffled ...) ）；
4. Debug KeyStore is valid for one year by default, and if you started developing Android programs a year ago, it is likely that the debug KeyStore expires and you cannot generate the APK file. Just delete the debug KeyStore and the system will generate a private key for you that is valid for one year. Preference->android->buid in the settings, and then delete: Debug.keystore. (I have not found this one);
6. First delete the item and load it in
8. Project/clean first, then build (the problem I encountered).
10. Delete the system user directory. Android directory, on it, remember to save the AVD directory inside
12. Resource file is in error
14. One of the most t-t (and the Mistake I made): Images in the drawable directory cannot be named with numbers or uppercase letters, otherwise this error occurs.

Well, these are my actual experience and online data collation, if there is a new solution, please leave a message, thank you.

Your project contains error (s), please fix them before running your application. Error summary