Is there a way to create a Dark Mode in an iOS app with Xojo?
The only way to do it for now, and that's how Messenger, Feedly, Twitter and many other do, is to apply a color theme to each view that is displayed. And show a dark mode switch somewhere to switch between light and dark modes.
I am currently adding a dark mode to Packr, I have a module with many color constants and functions to return the light or dark color.
In each iOSView open event I set the color of background and of each control.
In the iOSView activate event I set the color of the navigation bar and toolbar (if necessary).