My app works this way. You have an initial screen with two lists, one for subjects and the other for the marks. In this first screen you will be adding your subjects and then with a button "add marks" you will go to another screen which as a spinner with the subjects you already put on the other screen. You choose your subject and then put the mark and the. This has to appear in the second list in the other screen, each mark with each subject.
I am having lots of problems trying to solve the list things any help?