how to set app icon

Hi,
i'm new on forum and new on ios development.
I'm succesfully coding my first app thanks this forum without post new questions (saving settings, location, background location and more), but i cannot find any instruction about app icon.
How can i setup the app icon? Now my app as the default blue icon

Thank you

from B4X Community - Android, iOS, desktop, server and IoT programming tools http://ift.tt/298HN19
via IFTTT