Perfect solution Your Project contains error (s), please fix them before running Your application problem

Just come across this problem, write a project without any problems but can not run, run directly reported this error, ADT Environment has been in use, no problem, all kinds of fix, clean, restore R files, restart ADT, no fruit, then from the Internet to find a variety of solutions, found countless people encountered this problem, Find a more reasonable solution, but I did not test the results, did not find KeyStore, the method is as follows:

Android requires that all programs must have a signature, otherwise the program will not be installed. In our development process, ADT uses the debug KeyStore, which is set in Preference->android->buid.

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Locate the address of the default debug KeyStore, and then delete the Debug.keystore file.

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. I tuned the system time and the following error occurred. At this point you just delete the debug KeyStore, and the system will generate a private key that is valid for one year.

Finally in the clean project, compile ok!

How am I going to fix it? Here's the point: direct copy, which can't run a project , run, noproblem! Problem solving. Compared to a fool, but can solve the problem. ^_^

This article is from the "dream Start from 2015" blog, be sure to keep this source http://jishuren.blog.51cto.com/965129/1628047

Perfect solution Your Project contains error (s), please fix them before running Your application problem