处理空广告页情况

Assets/Scripts/UI/Prefab/Race/RaceHomeScript.cs

@@ -269,6 +269,11 @@ public class RaceHomeScript : RaceScript
     }
     private void handleDotList(float totalScrollValue)
     {
+        if (content.childCount <= 0) 
+        {
+            scrollIndex = 0;
+            return;
+        }
         scrollIndex = ((scrollIndex + content.childCount) + (totalScrollValue < 0 ? -1 : 1)) % content.childCount;
         var dotList = scroll.transform.Find("DotList");
         for (int i = 0; i < dotList.childCount; i++)