InstantSearch Android - How can I set up a banner?

To display a banner, you need to listen to the searcher’s result update, extract the userData which contains the banner information, and then use that information to update your UI.

Swift

searcher.response.subscribePast { response ->
    val msg = response?.userDataOrNull?.firstOrNull()?.getPrimitiveOrNull("promo_content")?.content
    // display msg in a banner if it is available
}