fix:1、修复bug

Assets/Scripts/LevelManager.cs

@@ -1,3 +1,4 @@
+using System;
 using UnityEngine;
 using System.Collections.Generic;
 using ChillConnect;
@@ -100,4 +101,24 @@ public class LevelManager : MonoBehaviour
         CurrentLevel = JsonUtility.FromJson<LevelConfig>(jsonFile.text);
         return CurrentLevel != null;
     }
+
+    private float lastBackPressTime;
+
+    private void Update()
+    {
+#if UNITY_ANDROID && !UNITY_EDITOR
+        if (!Input.GetKeyDown(KeyCode.Escape)) return;
+        if (Time.time - lastBackPressTime < 2f)
+        {
+            if (!UIManager.Instance.IsExistUI(UIConst.H5UI)) return;
+            
+            Debug.Log($"gamelogin ui is exist ");
+            UICtrlDispatcher.Instance.Dispatch(UICtrlMsg.H5UI_Close);
+        }
+        else
+        {
+            lastBackPressTime = Time.time;
+        }
+#endif
+    }
 }