From 5b8ff960514a6dafef4e28bc1cbc6987e55fc861 Mon Sep 17 00:00:00 2001
From: karvulf <36191072+karvulf@users.noreply.github.com>
Date: Fri, 4 Feb 2022 13:49:09 +0100
Subject: [PATCH] Flutter Update: 2.10.0 - Fix: Looking up a deactivated
 widget's ancestor is unsafe fix (#499)
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* Looking up a deactivated widget's ancestor is unsafe fix

* fixed assignment

Co-authored-by: André <andre.boerger@alte-leipziger.de>
---
 lib/src/core/photo_view_core.dart | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/lib/src/core/photo_view_core.dart b/lib/src/core/photo_view_core.dart
index 74595dfb..96fa5722 100644
--- a/lib/src/core/photo_view_core.dart
+++ b/lib/src/core/photo_view_core.dart
@@ -108,14 +108,10 @@ class PhotoViewCoreState extends State<PhotoViewCore>
   double? _scaleBefore;
   double? _rotationBefore;
 
-  late final AnimationController _scaleAnimationController =
-      AnimationController(vsync: this)
-        ..addListener(handleScaleAnimation)
-        ..addStatusListener(onAnimationStatus);
+  late final AnimationController _scaleAnimationController;
   Animation<double>? _scaleAnimation;
 
-  late final AnimationController _positionAnimationController =
-      AnimationController(vsync: this)..addListener(handlePositionAnimate);
+  late final AnimationController _positionAnimationController;
   Animation<Offset>? _positionAnimation;
 
   late final AnimationController _rotationAnimationController =
@@ -261,6 +257,12 @@ class PhotoViewCoreState extends State<PhotoViewCore>
     addAnimateOnScaleStateUpdate(animateOnScaleStateUpdate);
 
     cachedScaleBoundaries = widget.scaleBoundaries;
+
+    _scaleAnimationController = AnimationController(vsync: this)
+      ..addListener(handleScaleAnimation)
+      ..addStatusListener(onAnimationStatus);
+    _positionAnimationController = AnimationController(vsync: this)
+      ..addListener(handlePositionAnimate);
   }
 
   void animateOnScaleStateUpdate(double prevScale, double nextScale) {