subscription list+view

flutter/lib/utils/navi.dart

@@ -32,6 +32,10 @@ class Navi {
   static void popDialog(BuildContext dialogContext) {
     Navigator.pop(dialogContext);
   }
+
+  static void pop(BuildContext context) {
+    Navigator.of(context).pop();
+  }
 }
 
 class SCNRouteObserver extends RouteObserver<PageRoute<dynamic>> {