From fd9120bcaab62114c59b6e1676ceb0886ee2e1a5 Mon Sep 17 00:00:00 2001
From: alichen <ali322@gmail.com>
Date: Sat, 6 Oct 2018 23:11:46 +0800
Subject: [PATCH] change leading in topic

---
 lib/widget/topic.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/widget/topic.dart b/lib/widget/topic.dart
index 0d9a940..46499e4 100644
--- a/lib/widget/topic.dart
+++ b/lib/widget/topic.dart
@@ -29,7 +29,7 @@ class TopicState extends State<TopicScene> with SingleTickerProviderStateMixin{
           elevation: 0.0,
           title: _renderTitle(context, vm),
           leading: new IconButton(icon: const Icon(Icons.arrow_back, color: Colors.white, size: 20.0), onPressed: () {
-            Navigator.maybePop(context);
+            Navigator.of(context).maybePop();
           }),
           actions: <Widget>[
             new IconButton(