First Android app, need help

Hi everyone

After a few weeks of learning on Codecademy, I bought a book about android programming and I started to build an app that is supposed to store data about medication, and then in a separate activity the app should show the meds that were entered.

I built three activites with working buttons and a functional database. Now I’m trying to show the contents of the database in a ListView but ever since I tried that, my buttons (which worked perfectly fine before) are not working properly anymore.

If anyone has some time to help me, it would be much appreciated. And also, where should I upload my current project so others can take a look at it?

A good place to upload your code to be shared by others is github.
I need more experience with databases but I think SQL is used for storing data.