When i Scroll listview it showing this error - Githubissues

fluttercommunity / flutter-draggable-scrollbar

Draggable Scrollbar - A scrollbar that can be dragged for quickly navigation through a vertical list. Additional option is showing label next to scrollthumb with information about current item. Maintainer: @marica27

https://pub.dev/packages/draggable_scrollbar

MIT License

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When i Scroll listview it showing this error #35

Closed anandsubbu007 closed 4 years ago

anandsubbu007 commented 4 years ago

[38;5;248m════════ Exception caught by gesture library ═══════════════════════════════════[39;49m
[38;5;244mThe following assertion was thrown while resolving a PointerSignalEvent:[39;49m
Cannot get size from a render object that has been marked dirty for layout.

[38;5;248mThe size of this render object is ambiguous because this render object has been modified since it was last laid out, which typically means that the size getter was called too early in the pipeline (e.g., during the build phase) before the framework has determined the size and position of the render objects during layout.[39;49m

[38;5;244mThe size getter was called for the following element: DraggableScrollbar[39;49m
    [38;5;244mdirty[39;49m
    [38;5;244mdependencies: [_EffectiveTickerMode][39;49m
    [38;5;244mstate: _DraggableScrollbarState#f7719(tickers: tracking 2 tickers)[39;49m
[38;5;244mThe render object from which the size was to be obtained was: _RenderLayoutBuilder#671ac relayoutBoundary=up11 NEEDS-LAYOUT[39;49m

[38;5;248mConsider using debugPrintMarkNeedsLayoutStacks to determine why the render object in question is dirty, if you did not expect this.[39;49m

[38;5;244mWhen the exception was thrown, this was the stack[39;49m
[38;5;244mC:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 212:49      throw_[39;49m
[38;5;244mpackages/flutter/src/widgets/framework.dart 3812:9                                                                             <fn>[39;49m
[38;5;244mpackages/flutter/src/widgets/framework.dart 3829:7                                                                             get size[39;49m
[38;5;244mpackages/draggable_scrollbar/draggable_scrollbar.dart 359:20                                                                   get barMaxScrollExtent[39;49m
[38;5;244mpackages/draggable_scrollbar/draggable_scrollbar.dart 426:11                                                                   <fn>[39;49m
[38;5;244m...[39;49m
[38;5;244mEvent: PointerScrollEvent#1a7b4(position: Offset(321.0, 507.0), scrollDelta: Offset(-0.0, 5.0))[39;49m
    [38;5;244mposition: Offset(321.0, 507.0)[39;49m
    [38;5;244mscrollDelta: Offset(-0.0, 5.0)[39;49m
[38;5;248m════════════════════════════════════════════════════════════════════════════════[39;49m

[38;5;248m════════ Exception caught by gesture library ═══════════════════════════════════[39;49m
Cannot get size from a render object that has been marked dirty for layout.
[38;5;248m════════════════════════════════════════════════════════════════════════════════[39;49m

[38;5;248m════════ Exception caught by gesture library ═══════════════════════════════════[39;49m
Cannot get size from a render object that has been marked dirty for layout.
[38;5;248m════════════════════════════════════════════════════════════════════════════════[39;49m

[38;5;248m════════ Exception caught by gesture library ═══════════════════════════════════[39;49m
Cannot get size from a render object that has been marked dirty for layout.
[38;5;248m════════════════════════════════════════════════════════════════════════════════[39;49m