How to set notification count for Android BottomNavigationView?

Question

I am using

to set BottomNavigationView in my android app. My question is

Answer 1

First you need to add app:actionLayout in menu file's item where you want to show badge of your BottomNavigationView like this

where unread_message_layout is the layout which has badge something like below

Here is the XML of that layout

and in your activity where BottomNavigationView is available, add this to show badges

var mbottomNavigationMenuView = binding.bottomNavigationView.getChildAt(0) as BottomNavigationMenuView
var chatBadge = LayoutInflater.from(this).inflate(R.layout.unread_message_layout,
                mbottomNavigationMenuView, false)
var itemView = mbottomNavigationMenuView.getChildAt(2) as BottomNavigationItemView

val tvUnreadChats = chatBadge.findViewById(R.id.tvUnreadChats) as TextView
tvUnreadChats.text = "1"//String that you want to show in badge
itemView.addView(chatBadge)

Here getChildAt(2) is third item in my BottomNavigationView