In a Xamarin.tvOS project I'm working on, we're using a UIActivityIndicatorView on a splash screen when the application first launches, and I recently noticed the color was black. The style is set to WhiteLarge, and I even assigned the color to white manually and it is still black at runtime.
I then tried manually assigning the color in ViewDidLoad() with UIActivityIndicatorView.Color = UIColor.White but it ignored that as well. What is really weird is that if I assign it to something like UIColor.Red, it will be red like I expect. Unless I'm mistaken, the default color of a UIActivityIndicatorView with the style of WhiteLarge should be white anyway, so this makes no sense to me...
Have I encountered some strange accessibility or theme color issue where the color is being reassigned somehow or what?
In my case, my info.plist file was missing an entry called User Interface Style that is automatically added when creating newer Xamarin.tvOS projects that target tvOS 10 or above. When I added it and set it to Automatic (the other two options being Light or Dark), I began to see the behavior I expected.
I found this link to the Xamarin guide to User Interface Styles to be helpful: https://learn.microsoft.com/en-us/xamarin/ios/tvos/platform/user-interface-styles