I'm a rookie Developer and I always seem to get stuck on things like this...
The solution is to not use a JAR, add the Showcaseview project as a library instead.
I solved this same issue by the following steps:
Import "Main" project that is in the "library" folder into my workspace from https://github.com/amlcurran/ShowcaseView
Right click the imported project from Step 1 and click properties>Android and check the "is library" box ![enter image description here][2]
- Right click the project you want to use Showcaseview in and click properties>Android and click "Add"
- Select the project from Step 1 and Click "OK" (Note: I have renamed mine to "Showcase" yours should be "Main" if you got the project from the Github link above)
- Click Apply
- Clean and Build
Enjoy less squiggly red lines!!!
I would post screen shots but this is my first SO post...