OverrideUserInterfaceStyle = UIUserInterfaceStyle.Light This can be done on any UIView, UIViewController, or UIWindow. If your app is basically ready to go and just a few screens require a specific mode you can set the OverrideUserInterfaceStyle propety. You can manually set this to Light or Dark to apply a theme to your entire app.
The easiest is to update your ist and add a new entry named UIUserInterfaceStyle. Well, you are in luck because you can opt-out! iOS You may be in this situation or perhaps you have a completely custom theme and you don't want the operating system to touch it. This can depend on the framework you are using, hard coded values, or a bunch of other things. When running apps on iOS 13 or macOS and flipping on dark mode can make your app look.
I really want to go through all my apps and add proper dark mode support, however I just haven't had the time. To my surprise I have actually really been enjoying dark mode on my desktop and mobile devices. Everyone can't stop talking about dark mode now that iOS 13 and Android 10 are officially released.