How to switch programmatically to dark mode swift
Solution 1:
You can override the style for single views or view controller using the overrideUserInterfaceStyle property. But since the window is also a view, you can set that on your main window to force it into light or dark mode:
window.overrideUserInterfaceStyle = .dark
Solution 2:
You can use one of the observation ways, for example, Defaults lib, and then add
window.overrideUserInterfaceStyle = .dark
to
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {}
method