My main screen is a full screen map of a golf hole, which needs to be tall and narrow. On the inner display I want a panel beside it, but a split arrangement splits vertically when the view is taller than it is wide, which gives the map the wrong shape. What is the intended approach when one split axis works for the content and the other does not?
By default, a split arrangement chooses its split axis based on the aspect ratio of its container: horizontally when wider than tall, and vertically when taller than wide.
If vertical splitting doesn't work for your content, you can restrict it to horizontal splits by using .arrangementViewStyle(.split.axes(.horizontal)) in SwiftUI or arrangementVC.updateArrangement(.split.axes(.horizontal)) in UIKit.
Also, an overlay arrangement positions the secondary view on top of the primary view in portrait, but can automatically move both views side by side across the fold when the device is partially folded.
For more details, check out the Arrange views in different poses section of Preparing your app for iPhone Duo, which walks through configuring split arrangements across poses.
