Fix NRE

Author: mythz

AndroidXamarinChat/Extensions.cs

@@ -69,8 +69,11 @@ public static void SendMessage(this ServerEventsClient client, PostRawToChannel
             client.ServiceClient.Post(request);
         }
 
-        public static void UpdateUserProfile(this ServerEventConnect connectMsg,TextView txtUser, ImageView imgProfile)
+        public static void UpdateUserProfile(this ServerEventConnect connectMsg, MainActivity activity)
         {
+            var txtUser = activity.FindViewById<TextView>(Resource.Id.txtUserName);
+            var imgProfile = activity.FindViewById<ImageView>(Resource.Id.imgProfile);
+
             Application.SynchronizationContext.Post(_ => { txtUser.Text = connectMsg.DisplayName; }, null);
             connectMsg.ProfileUrl.GetImageBitmap()
                 .ContinueWith(

AndroidXamarinChat/MainActivity.cs

@@ -72,17 +72,16 @@ protected override void OnCreate(Bundle bundle)
 			var messageHistoryAdapter = new MessageListViewAdapter(this, new List<ChatMessage>(), () => this.subscriberList);
 			messageHistoryList.Adapter = messageHistoryAdapter;
 
-		    var txtUser = FindViewById<TextView>(Resource.Id.txtUserName);
-		    var imgProfile = FindViewById<ImageView>(Resource.Id.imgProfile);
-		    var channels = new[] {"home"};
+            var channels = new[] {"home"};
 			cmdReceiver = new ChatCommandHandler (this, messageHistoryAdapter, "home");
+		    var activity = this;
 
 		    client = new ServerEventsClient(BaseUrl, channels)
 		    {
 		        OnConnect = connectMsg =>
 		        {
 		            client.UpdateChatHistory(cmdReceiver).ConfigureAwait(false);
-		            connectMsg.UpdateUserProfile(txtUser, imgProfile);
+		            connectMsg.UpdateUserProfile(activity);
 		        },
                 OnCommand = command =>
                 {