Track controller stream subscription and cancel on dispose

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [7.0.2]
+
+- Tracks `StreamSubscription<ControllerEvent>` given `widget.controller`, and calls `cancel` on dispose.
+
 ## [7.0.1]
 
 - Prevents `CardSwiperController` to be disposed by `CardSwiper`.

lib/src/widget/card_swiper.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:collection';
 import 'dart:math' as math;
 

lib/src/widget/card_swiper_state.dart

@@ -20,13 +20,15 @@ class _CardSwiperState<T extends Widget> extends State<CardSwiper>
 
   bool get _canSwipe => _currentIndex != null && !widget.isDisabled;
 
+  StreamSubscription<ControllerEvent>? controllerSubscription;
+
   @override
   void initState() {
     super.initState();
 
     _undoableIndex.state = widget.initialIndex;
 
-    widget.controller?.events.listen(_controllerListener);
+    controllerSubscription = widget.controller?.events.listen(_controllerListener);
 
     _animationController = AnimationController(
       duration: widget.duration,
@@ -65,6 +67,7 @@ class _CardSwiperState<T extends Widget> extends State<CardSwiper>
   @override
   void dispose() {
     _animationController.dispose();
+    controllerSubscription?.cancel();
     super.dispose();
   }
 

pubspec.yaml

@@ -2,7 +2,7 @@ name: flutter_card_swiper
 description: This is a Tinder-like card swiper package. It allows you to swipe left, right, up, and down and define your own business logic for each direction.
 homepage: https://github.com/ricardodalarme/flutter_card_swiper
 issue_tracker: https://github.com/ricardodalarme/flutter_card_swiper/issues
-version: 7.0.1
+version: 7.0.2
 
 environment:
   sdk: ">=3.0.0 <4.0.0"