Retrieving the Group key and item key depending upon Split page currently being viewed

Question

I have a case (Based on Split app layout)where i have two different Item templates (item 1 and item 2 ) in my home page, but they use the same page (split page). But the data loaded on split page is unique to the each item.

So how do i now that the particular page was called by item 1 or item 2 , so that i can load data of that particular item on split page ? 
Is there any way to retrieve the groupkey? 

Answer 1

Pass the parameters to the desired split page by passing parameters using the navigate function