导入R3，简单实现数据绑定UI，以及双向绑定

Assets/GameFramework/Runtime/MessageBox.cs

@@ -33,7 +33,7 @@ public class MessageBox : MonoBehaviour
             return null;
         }
 
-        var go = Instantiate(prefab, GameManager.Inst.MainUICanvas.transform.Find("Top"));
+        var go = Instantiate(prefab, MainUICanvas.Inst.Top);
         go.name = "MessageBox";
         var messageBox = go.GetComponent<MessageBox>();
         return messageBox;