Merge pull request #1 from snkrdunk/fix/animation-controller

animation controllerのインスタンスかを修正
snkrdunk · Sep 15, 2023 · 854e8b8 · 854e8b8
2 parents a8864e2 + a1985f3
commit 854e8b8
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/lib/src/inner_infinite_scroll_tab_view.dart b/lib/src/inner_infinite_scroll_tab_view.dart
@@ -94,12 +94,7 @@ class InnerInfiniteScrollTabViewState extends State<InnerInfiniteScrollTabView>
   double get indicatorHeight =>
       widget.indicatorHeight ?? widget.separator?.width ?? 2.0;
 
-  late final _indicatorAnimationController =
-      AnimationController(vsync: this, duration: _tabAnimationDuration)
-        ..addListener(() {
-          if (_indicatorAnimation == null) return;
-          _indicatorSize.value = _indicatorAnimation!.value;
-        });
+  late final _indicatorAnimationController;
   Animation<double>? _indicatorAnimation;
 
   double _totalTabSizeCache = 0.0;
@@ -193,6 +188,13 @@ class InnerInfiniteScrollTabViewState extends State<InnerInfiniteScrollTabView>
   void initState() {
     super.initState();
 
+    _indicatorAnimationController =
+      AnimationController(vsync: this, duration: _tabAnimationDuration)
+        ..addListener(() {
+          if (_indicatorAnimation == null) return;
+          _indicatorSize.value = _indicatorAnimation!.value;
+        });
+
     calculateTabBehaviorElements(widget.textScaleFactor);
 
     _indicatorSize = ValueNotifier(_tabTextSizes[0]);