i'm interested in android app developing. I want a make calculating month wage about some job.
so i've watched adaptable source in github. url: https://github.com/ernestoyaquello/VerticalStepperForm I first moved the usage posted by this developer to my gradle, xml and java. But it is because of my lack of basics, I do not know what to do if red letters appear and Where should I include the java code. Of course I'm doing a 'build clear' to get rid of the red letters, but I'm wondering if I need to create and set all the javafiles as the sample from github I want to use.
also I'm also studying 'android lessons in udacity', and I'd be grateful if you have any other suggestions to improve my coding knowledge and skills.