The ScreenView event is triggered when a user navigates to a new screen within the app.
- The 
urlparameter is required to be non-null otherwise this event will not be tracked. If you cannot provide the corresponding screen'surl, please use your default home webpageurl. - The 
typeparameter is required. There is no need to calltrackScreenViewif the page does not fall into one ofScreenType's values. 
ScreenType Values
enum: ScreenType { 
  HOME, 
  PRODUCT, 
  CATEGORY, 
  SEARCH, 
  CART, 
  ARTICLE, 
  GALLERY, 
  CHECKOUT 
}
Implementation
Wunderkind.getInstance().trackScreenView(URL url, ScreenType type)Wunderkind.shared.trackScreenView(url: URL, type: ScreenType)Wunderkind().trackScreenView(url: string, screenType: ScreenType)Wunderkind.trackScreenView(url: string, screenType: ScreenType)