Image Dropdown Spinner Control

Hi. I want the user to select the background of my app. In Android, there is a control called spinner from which items could be selected (like select list in html) and its items can be images. I searched and found picker control in xamarin forms, but it can only contain text. Are there any components that I can use for pcl or do I have to use custom renderers? (by the way, what is the ios equivalent of spinner in android?).
thanks.