in debug mode, create local anchor process often stuck without located or any event triggered. changed back to origin code version, letting the local anchor created on demand instead of always during Start phase.

Author: Regis WANG

Assets/HoloToolkit/Sharing/Tests/Scripts/ImportExportAnchorManager.cs

@@ -132,11 +132,6 @@ private static bool ShouldLocalUserCreateRoom
         /// </summary>
         private WorldAnchorStore anchorStore;
 
-        /// <summary>
-        /// The anchor this object is attached to.
-        /// </summary>
-        private WorldAnchor thisAnchor;
-
         /// <summary>
         /// Keeps track of the name of the anchor we are exporting.
         /// </summary>
@@ -220,9 +215,6 @@ protected override void Awake()
 
         private void Start()
         {
-#if UNITY_WSA && !UNITY_EDITOR
-            thisAnchor = GetComponent<WorldAnchor>() ?? gameObject.AddComponent<WorldAnchor>();
-#endif
             // SharingStage should be valid at this point, but we may not be connected.
             if (SharingStage.Instance.IsConnected)
             {
@@ -701,13 +693,14 @@ private void AnchorStoreReady(WorldAnchorStore store)
         /// </summary>
         private void CreateAnchorLocally()
         {
-            if (thisAnchor.isLocated)
+            WorldAnchor anchor = this.EnsureComponent<WorldAnchor>();
+            if (anchor.isLocated)
             {
                 currentState = ImportExportState.ReadyToExportInitialAnchor;
             }
             else
             {
-                thisAnchor.OnTrackingChanged += Anchor_OnTrackingChanged_InitialAnchor;
+                anchor.OnTrackingChanged += Anchor_OnTrackingChanged_InitialAnchor;
             }
         }
 
@@ -883,11 +876,12 @@ private void AnchorLoadComplete()
         /// </summary>
         private void Export()
         {
+            WorldAnchor anchor = this.GetComponent<WorldAnchor>();
             string guidString = Guid.NewGuid().ToString();
             exportingAnchorName = guidString;
 
             // Save the anchor to our local anchor store.
-            if (thisAnchor != null && anchorStore.Save(exportingAnchorName, thisAnchor))
+            if (anchor != null && anchorStore.Save(exportingAnchorName, anchor))
             {
                 if (SharingStage.Instance.ShowDetailedLogs)
                 {
@@ -900,7 +894,7 @@ private void Export()
                 }
 
                 sharedAnchorInterface = new WorldAnchorTransferBatch();
-                sharedAnchorInterface.AddWorldAnchor(guidString, thisAnchor);
+                sharedAnchorInterface.AddWorldAnchor(guidString, anchor);
                 WorldAnchorTransferBatch.ExportAsync(sharedAnchorInterface, WriteBuffer, ExportComplete);
             }
             else