Make Android File
I follow the instructions on the website:http://docs.rosjava.googlecode.com/hg/rosjava_core/html/building.html, but an error occored at step 3 :
FAILURE: Build failed with an exception.
- What went wrong: Could not open task artifact state cache (/opt/ros/electric/stacks/rosjava_core/.gradle/1.0-milestone-8a/taskArtifacts). > java.io.IOException: No such file or directory
there are so many guides on the topic- how to create ros android. I tried almost every method, but failed. Is it possible that someone make a step-by-step guide so i can learn form it? thank you very much.