[Bug]: This widget has been unmounted

[RTAzis]

Description:

When using a FlutterCarouselController in a parent widget, if the child FlutterCarousel widget is unmounted and startAutoPlay() is called, it leads to an unmounted error. Additionally, checking controller.ready still returns true. The _FlutterCarouselState should check its mounted state before interacting with the controller and properly dispose of it when the widget is unmounted.

Steps to Reproduce:

1. Create a parent widget with a FlutterCarouselController.
2. In the child widget, use FlutterCarousel with this controller.
3. Unmount the child widget while the carousel is running.
4. Call startAutoPlay() on the controller.
5. The unmounted error occurs because the child widget is no longer in the widget tree.

Version

^3.1.0

What devices are you seeing the problem on?

Android

OS

Android API 35

Relevant log output

#2      _FlutterCarouselState._getTimer.<anonymous closure> (package:flutter_carousel_widget/src/_flutter_carousel_widget.dart:213:35)
_flutter_carousel_widget.dart:213
      #3      _rootRunUnary (dart:async/zone.dart:1407:47)
zone.dart:1407
      #4      _CustomZone.runUnary (dart:async/zone.dart:1308:19)
zone.dart:1308
      #5      _CustomZone.runUnaryGuarded (dart:async/zone.dart:1217:7)
zone.dart:1217
      #6      _CustomZone.bindUnaryCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1254:26)
zone.dart:1254
      #7      _rootRunUnary (dart:async/zone.dart:1415:13)
zone.dart:1415
      #8      _CustomZone.runUnary (dart:async/zone.dart:1308:19)
zone.dart:1308
      #9      _CustomZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:1238:26)
zone.dart:1238
      #10     _Timer._runTimers (dart:isolate-patch/timer_impl.dart:398:19)
timer_impl.dart:398
      #11     _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:429:5)
timer_impl.dart:429
      #12     _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)
isolate_patch.dart:184

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