Don't see animation in animation preview
User Question :
Why can’t I see my animation in the animation preview?
The animation preview shows the animation relative to the selected animation design context.
This design context is always relative to the current state of the application. Therefore, if the default state of the screen (as seen in the editor) on which the animation takes place has the animated controls hidden or obscured, it will be in the same hidden or obscured state when the animation is previewed. In order to view the animation as it would appear in the live app, you must set the state of the app in the editor to mirror what it will be when the animation is meant to be triggered. For example, hide any layers or objects that are blocking the animated object and make sure the object is not hidden if it is meant to be visible when the animation runs.