From 98696b9a47da7ae1b1c3d21115ab51c0091c01e3 Mon Sep 17 00:00:00 2001
From: Ming Ming <nkming2@gmail.com>
Date: Sat, 3 Dec 2022 10:02:04 +0800
Subject: [PATCH] Fix potential use of disposed context

---
 app/lib/widget/measurable_item_list.dart | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/app/lib/widget/measurable_item_list.dart b/app/lib/widget/measurable_item_list.dart
index 109bed0d..bbac1c4b 100644
--- a/app/lib/widget/measurable_item_list.dart
+++ b/app/lib/widget/measurable_item_list.dart
@@ -52,12 +52,14 @@ class _MeasurableItemListState extends State<MeasurableItemList>
   @override
   didChangeMetrics() {
     WidgetsBinding.instance.addPostFrameCallback((_) {
-      final orientation = MediaQuery.of(context).orientation;
-      if (orientation != _prevOrientation) {
-        _log.info(
-            "[didChangeMetrics] updateListHeight: orientation changed: $orientation");
-        _prevOrientation = orientation;
-        updateListHeight();
+      if (mounted) {
+        final orientation = MediaQuery.of(context).orientation;
+        if (orientation != _prevOrientation) {
+          _log.info(
+              "[didChangeMetrics] updateListHeight: orientation changed: $orientation");
+          _prevOrientation = orientation;
+          updateListHeight();
+        }
       }
     });
   }