fixing up sample app

@@ -247,7 +247,8 @@ constructor(
     }
 
     fun close() {
-        TODO("Not yet implemented")
+        isConnected = false
+        currentWs?.close(1000, "Normal Closure")
     }
 
     interface Listener {

@@ -10,11 +10,13 @@ class SubscriberTransportObserver(
 
 
     override fun onIceCandidate(candidate: IceCandidate) {
+        Timber.v { "onIceCandidate: $candidate" }
         engine.client.sendCandidate(candidate, Rtc.SignalTarget.SUBSCRIBER)
     }
 
     override fun onAddTrack(receiver: RtpReceiver, streams: Array<out MediaStream>) {
         val track = receiver.track() ?: return
+        Timber.v { "onAddTrack: $track, ${streams.fold("") { sum, it -> "$sum, $it" }}" }
         engine.listener?.onAddTrack(track, streams)
     }
 
@@ -27,6 +29,7 @@ class SubscriberTransportObserver(
     }
 
     override fun onDataChannel(channel: DataChannel) {
+        Timber.v { "onDataChannel" }
         engine.listener?.onAddDataChannel(channel)
     }
 

@@ -78,10 +78,17 @@ class CallViewModel(
     }
 
     fun updateParticipants(room: Room) {
-        mutableRemoteParticipants.value = room.remoteParticipants
+        mutableRemoteParticipants.postValue(
+            room.remoteParticipants
                 .keys
                 .sortedBy { it.sid }
                 .mapNotNull { room.remoteParticipants[it] }
+        )
     }
 
+    override fun onCleared() {
+        super.onCleared()
+        mutableRoom.value?.disconnect()
+        mutableRoom.value = null
+    }
 }

 package io.livekit.android.sample
 
 import android.view.View
+import com.github.ajalt.timberkt.Timber
 import com.xwray.groupie.viewbinding.BindableItem
 import com.xwray.groupie.viewbinding.GroupieViewHolder
 import io.livekit.android.room.Room
@@ -19,12 +20,13 @@ class ParticipantItem(
     private var videoBound = false
 
     override fun initializeViewBinding(view: View): ParticipantItemBinding {
-        return ParticipantItemBinding.bind(view)
+        val binding = ParticipantItemBinding.bind(view)
+        room.initVideoRenderer(binding.renderer)
+        return binding
     }
 
     override fun bind(viewBinding: ParticipantItemBinding, position: Int) {
         viewBinding.run {
-            room.initVideoRenderer(renderer)
 
             val existingTrack = getVideoTrack()
             if (existingTrack != null) {
@@ -58,6 +60,7 @@ class ParticipantItem(
             return
         }
 
+        Timber.v { "adding renderer to $videoTrack" }
         videoTrack.addRenderer(viewBinding.renderer)
     }