fix #605

CarGuo · CarGuo · commit d54b5836a4d6 · 2019-12-19T13:55:17.000+08:00
diff --git a/lib/page/common_list_page.dart b/lib/page/common_list_page.dart
@@ -142,7 +142,7 @@ class _CommonListPageState extends State<CommonListPage>
     return new Scaffold(
       appBar: new AppBar(
           title: new Text(
-        widget.title,
+        widget.title ?? "",
         maxLines: 1,
         overflow: TextOverflow.ellipsis,
       )),
