Android app is displaying an old image that was replaced

Issue

I am adding some icons from the drawables folder to a layout. I had an image that I replaced which got the same name as the old one. I have overridden the file, rebuilt the project and the Android Studio's graphical layout showed the new icon. However, when I ran the app, the old icon appeared. I went over all the drawables folders to see if there might be one with the old icon, but it was replaced in every folder. I also tried reinstalling the app and it's still showing the wrong icon.

Why won't the app show the correct icon?

Solution

What eventually happened is that the images were replaced in a library module, while the app module also contained the old image. Since the app resources overrides the library's resources, the old image was shown.

Answered By - CodeMonkey