title: using the same uitableview to reload data and use back button
body: <p>Dont know how else to explain this but basically im using a uitableview to load data(core data) and have basically limitless lists and items. for instance list1 is food contains candy, starches, meat, and meat may contain beef, chicken, etc. if i click through the tableviews and get to chicken, how do i use the back button to go back to previous. I am just using "reload data" instead of multiple tableviews in storyboard. is there a better way to do this??? </p>
  
  <p>I started to set 3 values prevparentlist, subparentlist, and parentlist. but end up losing prevparentlist when you go to deep and it will only back up one level....didnt think this through.....please help</p>