List in tabs are not being loaded

Each tab page I have has a list item to show. Initially the list is empty, and I need to move away from the tab and come back to it so the list gets rendered. I’ve tried to use ionViewDidLoad, ionViewDidEnter, ionViewWilEnter to initialize the list, but no luck. Is there a way to force the list to be populated before the tab show the page?

thanks in advance for your time.