导入R3，简单实现数据绑定UI，以及双向绑定

Assets/GameFramework/Runtime/MainUICanvas.cs

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+using UnityEngine;
+
+public class MainUICanvas : SingletonMono<MainUICanvas>
+{
+    public GameObject InitBg;
+    public Transform Top;
+    public Transform Medium;
+    public Transform Bottom;
+    public Camera UICamera;
+    private void Awake()
+    {
+        DontDestroyOnLoad(gameObject);
+        DontDestroyOnLoad(UICamera);
+    }
+}