Hello World Android App, Error: workspace\appcompat_v7\res\values-v21\styles_base.xml No resource found that matches the given name

Question

I am a totally newbie who just got into Android development. I am going through the \"Building your first app\" tutorial on the official Android developer webpa

Answer 1

I found the source of the problem, when we create a new project, it contains the reference of the appcompat_v7 library:

the appcompat_v7 library already contains the support library "android-support-v4.jar"

the problem is that the new project created contains into the /libs folder, the library "android-support-v4.jar" too!, just delete this .jar from your new project ( that is already contained into the appcompat_v7 library)

don´t forget to clean and build your project

This problem happens using API 19 use API 21 or later