iOS Question is there any customviews controls like b4a

B4i supports custom views. They are implemented in the same way that B4A and B4J custom views are implemented.
This is a relatively new feature so I'm not sure whether the combobox implementations available use it.
https://www.b4x.com/android/forum/pages/results/?query=combobox+b4i

I found combo box and other control but not support designer I did not see it in custom view