My 2015 universal app needing an update apparently needs a Launch Screen storyboard. The iPhone app (for smaller phones in portrait and landscape) is basically a tab bar controller connected to several navigable table view controllers displaying first a topics table page and then details. For larger iPhones and iPads, this is all done programmatically in my code and becomes a split view with a column for topics and a larger area for details. The current app uses dozens of screen shots for each device and orientation.
With Xcode 12, I'm at a loss of how to create a single launch screen that will display the tab bar controller and an empty table (which was easy), yet magically move the tab bar controller to the left and the details on the larger area on the right for a split view.
Is there any documentation/videos/tutorials of how to manage this? If it was just iPhones and iPads I could make two launch storyboards but I don't know how to include large iPhones.
With Xcode 12, I'm at a loss of how to create a single launch screen that will display the tab bar controller and an empty table (which was easy), yet magically move the tab bar controller to the left and the details on the larger area on the right for a split view.
Is there any documentation/videos/tutorials of how to manage this? If it was just iPhones and iPads I could make two launch storyboards but I don't know how to include large iPhones.