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serenader2014 / flutter_carousel_slider

A flutter carousel widget, support infinite scroll, and custom child widget.
https://pub.dev/packages/carousel_slider
MIT License
1.6k stars 582 forks source link

positions.isNotEmpty error on sliding #200

Open govindmaheshwari2 opened 4 years ago

govindmaheshwari2 commented 4 years ago

[ERROR:flutter/lib/ui/ui_dart_state.cc(166)] Unhandled Exception: 'package:flutter/src/widgets/page_view.dart': Failed assertion: line 182 pos 7: 'positions.isNotEmpty': PageController.page cannot be accessed before a PageView is built with it. E/flutter (21043): #0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39) E/flutter (21043): #1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5) E/flutter (21043): #2 PageController.page (package:flutter/src/widgets/page_view.dart:182:7) E/flutter (21043): #3 CarouselSliderState.getTimer. (package:carousel_slider/carousel_slider.dart:111:57) E/flutter (21043): #4 _rootRunUnary (dart:async/zone.dart:1198:47) E/flutter (21043): #5 _CustomZone.runUnary (dart:async/zone.dart:1100:19) E/flutter (21043): #6 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7) E/flutter (21043): #7 _CustomZone.bindUnaryCallbackGuarded. (dart:async/zone.dart:1042:26) E/flutter (21043): #8 _rootRunUnary (dart:async/zone.dart:1206:13) E/flutter (21043): #9 _CustomZone.runUnary (dart:async/zone.dart:1100:19) E/flutter (21043): #10 _CustomZone.bindUnaryCallback. (dart:async/zone.dart:1026:26) E/flutter (21043): #11 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:397:19) E/flutter (21043): #12 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:428:5) E/flutter (21043): #13 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12) E/flutter (21043): W/System (21043): A resource failed to call close.

ghost commented 4 years ago

Did you find the solution?

ghost commented 4 years ago

I managed to correct it in my case, share the code snippet, so I can try to help