Android Application Occurs Twice In Main Menu

I wrote an android application and after I run it, it occurs twice in main menu. I mean, there are two icons for this application, but only one could be open. If I deinstall this a

Solution 1:

If you see your app twice, you either have two intents in your manifest file with the LAUNCHER category (make sure you have only one), or you changed the name of your package/class throughout the development process. Since you said that uninstalling it removes one copy, I'm tempted to suspect the latter.

Solution 2:

If your project uses library projects, check in the AndroidManifest.xml of each library project.

That's where I found the second intent with the LAUNCHER category.