c2同步课程命令

Assets/UniWebView/Script/UniWebView.cs

@@ -294,6 +294,8 @@ public class UniWebView: MonoBehaviour {
     /// </summary>
     public void UpdateFrame() {
         Rect rect = NextFrameRect();
+        if (listener == null)
+            return;
         UniWebViewInterface.SetFrame(listener.Name, (int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height);
     }