I have to create an application that makes extensive use of charts. Reading the web I chose achartengine that seems to have everything I need.
I downloaded the jar file, I plugged in the libs folder, I selected "add to library" and I lunch the gradlew clean. Result in the sources where I do the import of org.achartengine.xxxx I always returned the error that fails to resolve symbols .
Do you have suggestions? Thank you Andrea