FirebaseUI-FirebaseRecyclerAdapter is not supported by NavigationUI

[15r]

FirebaseUI-FirebaseRecyclerAdapter is not supported by NavigationUI!

After clicking item in recyclerview its navigated to another fragment. Once returning back or onBackPressed() previous loadstate is now working. *Code below reference.

class UserList : Fragment(R.layout.recyclerview) {
  private var fbAdapter: FirebaseRecyclerAdapter<UserMO, UserVH>? = null

  override fun onActivityCreated(savedInstanceState: Bundle?) {
      super.onActivityCreated(savedInstanceState)
      val userQuery = databaseReference.child("user-list")
      val fbOpt = FirebaseRecyclerOptions.Builder<UserMO>()
          .setQuery(userQuery, UserMO::class.java).build()
      fbAdapter = object : FirebaseRecyclerAdapter<UserMO, UserVH>(fbOpt) {
		
          override fun onCreateViewHolder(viewGroup: ViewGroup, i: Int): UserVH {
              val inflater = LayoutInflater.from(viewGroup.context)
              return UserVH(inflater.inflate(R.layout.allusers, viewGroup, false))
          }

          override fun onBindViewHolder(uservh: UserVH, i: Int, allusers: UserMO) {
              uservh.listUser(allusers)
              uservh.itemView.setOnClickListener {
                  findNavController().navigate(R.id.userdetails)
              }
          }
      }
      rView.apply {
          addItemDecoration(DividerItemDecoration(activity, DividerItemDecoration.VERTICAL))
          layoutManager = LinearLayoutManager(activity)
          adapter = fbAdapter
      }
  }

  override fun onStart() {
      super.onStart()
      fbAdapter?.startListening()
  }

  override fun onStop() {
      super.onStop()
      fbAdapter?.stopListening()
  }
}

[samtstern]

@15r can you explain how this is a bug in FirebaseUI? What does this library do wrong? RecyclerView shouldn't have anything to do with navigation.

[15r]

App output

Step 01 - Open app Step 02 - Scroll down and click USER16 item Step 03 - Onclick navigated to UserDetails fragment and onBackPressed() Step 04 is the result. Step 04 - See the image 4.

Expected output

Step 01 - Open app Step 02 - Scroll down and click USER16 item Step 03 - Onclick navigated to UserDetails fragment and onBackPressed() Step 04 has to the result. Step 04 - See the image 4.

@samtstern find the android project for reference https://github.com/15r/Users

[samtstern]

@15r sorry for the slow response but maybe you want to follow this guide: https://proandroiddev.com/fui-rv-state-a66833c3bb88

I'm still not sure this is a FirebaseUI issue, sounds like a general difficulty with RecyclerView + Navigation.