Exception caught by rendering library

[navneet-singh-sengar]

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════════ Exception caught by rendering library ═════════════════════════════════ The following assertion was thrown during performLayout(): Assertion failed: firstIndex == 0 || childScrollOffset(firstChild!)! - scrollOffset <= precisionErrorTolerance is not true

The relevant error-causing widget was IntroductionScreen-[LabeledGlobalKey<IntroductionScreenState>#1ed5a] When the exception was thrown, this was the stack C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/internal/js_dev_runtime/private/ddc_runtime/errors.dart 236:49 throw C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3 assertFailed packages/flutter/src/rendering/sliver_fixed_extent_list.dart 270:77 performLayout packages/flutter/src/rendering/object.dart 1779:7 layout packages/flutter/src/rendering/sliver_padding.dart 137:5 performLayout ... The following RenderObject was being processed when the exception was fired: RenderSliverFillViewport#86a84 relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-COMPOSITING-BITS-UPDATE RenderObject: RenderSliverFillViewport#86a84 relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-COMPOSITING-BITS-UPDATE needs compositing parentData: paintOffset=Offset(0.0, 0.0) (can use size) constraints: SliverConstraints(AxisDirection.right, GrowthDirection.forward, ScrollDirection.idle, scrollOffset: 500.0, remainingPaintExtent: 500.0, crossAxisExtent: 583.3, crossAxisDirection: AxisDirection.down, viewportMainAxisExtent: 500.0, remainingCacheExtent: 500.0, cacheOrigin: 0.0) geometry: SliverGeometry(scrollExtent: 2000.0, paintExtent: 500.0, maxPaintExtent: 2000.0, hasVisualOverflow: true, cacheExtent: 500.0) scrollExtent: 2000.0 paintExtent: 500.0 maxPaintExtent: 2000.0 hasVisualOverflow: true cacheExtent: 500.0 currently live children: 1 to 1 child with index 1: RenderIndexedSemantics#a7310 needs compositing parentData: index=1; keepAlive; layoutOffset=500.0 constraints: BoxConstraints(w=500.0, h=583.3) semantic boundary size: Size(500.0, 583.3) index: 1 child: RenderRepaintBoundary#8bae2 needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) layer: OffsetLayer#d59ff engine layer: OffsetEngineLayer#9c469 offset: Offset(0.1, 0.0) size: Size(500.0, 583.3) metrics: 96.3% useful (1 bad vs 26 good) diagnosis: this is an outstandingly useful repaint boundary and should definitely be kept child: RenderPadding#62d49 needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets.zero textDirection: ltr child: RenderPadding#10557 needs compositing parentData: offset=Offset(0.0, 0.0) (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets(0.0, 0.0, 0.0, 60.0) textDirection: ltr child with index 0 (kept alive but not laid out): RenderIndexedSemantics#de945 needs compositing parentData: index=0; keepAlive; layoutOffset=0.0 constraints: BoxConstraints(w=500.0, h=583.3) semantic boundary size: Size(500.0, 583.3) index: 0 child: RenderRepaintBoundary#cd89d needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) layer: OffsetLayer#93293 engine layer: OffsetEngineLayer#b6c9d offset: Offset(-499.9, 0.0) size: Size(500.0, 583.3) metrics: 95.2% useful (1 bad vs 20 good) diagnosis: this is an outstandingly useful repaint boundary and should definitely be kept child: RenderPadding#500c5 needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets.zero textDirection: ltr child: RenderPadding#cf691 needs compositing parentData: offset=Offset(0.0, 0.0) (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets(0.0, 0.0, 0.0, 60.0) textDirection: ltr child with index 2 (kept alive but not laid out): RenderIndexedSemantics#dc12f needs compositing parentData: index=2; keepAlive; layoutOffset=1000.0 constraints: BoxConstraints(w=500.0, h=583.3) semantic boundary size: Size(500.0, 583.3) index: 2 child: RenderRepaintBoundary#6feef needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) layer: OffsetLayer#d2623 DETACHED engine layer: OffsetEngineLayer#07e54 offset: Offset(-499.8, 0.0) size: Size(500.0, 583.3) metrics: 92.3% useful (1 bad vs 12 good) diagnosis: this is an outstandingly useful repaint boundary and should definitely be kept child: RenderPadding#b6774 needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets.zero textDirection: ltr child: RenderPadding#79d61 needs compositing parentData: offset=Offset(0.0, 0.0) (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets(0.0, 0.0, 0.0, 60.0) textDirection: ltr child with index 3 (kept alive but not laid out): RenderIndexedSemantics#4eaef needs compositing parentData: index=3; keepAlive; layoutOffset=1500.0 constraints: BoxConstraints(w=500.0, h=583.3) semantic boundary size: Size(500.0, 583.3) index: 3 child: RenderRepaintBoundary#8b975 needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) layer: OffsetLayer#1f0c5 DETACHED engine layer: OffsetEngineLayer#f1c7b offset: Offset(0.0, 0.0) size: Size(500.0, 583.3) metrics: 80.0% useful (1 bad vs 4 good) diagnosis: this is a useful repaint boundary and should be kept child: RenderPadding#ca787 needs compositing parentData: (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets.zero textDirection: ltr child: RenderPadding#bf9aa needs compositing parentData: offset=Offset(0.0, 0.0) (can use size) constraints: BoxConstraints(w=500.0, h=583.3) size: Size(500.0, 583.3) padding: EdgeInsets(0.0, 0.0, 0.0, 60.0) textDirection: ltr ════════════════════════════════════════════════════════════════════════════════

[redvg]

same here, using the example

[vnl]

Same for me too:

════════ Exception caught by rendering library ═════════════════════════════════
'package:flutter/src/rendering/sliver_fixed_extent_list.dart': Failed assertion: line 270 pos 12: 'firstIndex == 0 || childScrollOffset(firstChild!)! - scrollOffset <= precisionErrorTolerance': is not true.
The relevant error-causing widget was
IntroductionScreen-[LabeledGlobalKey<IntroductionScreenState>#aed2d]
lib/…/onboarding/onboarding.dart:47
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[stilbu]

Same here

[peterBrxwn]

Mine fails too.

Possible solution: Set curve to the default value (i.e don't give curve a value or set curve = Curves.easeIn). This seems to fix mine.

[ziyafenn]

Same problem here, @peterbrown0 your solution fixed it. Thanks!

[Pyozer]

Hi, sorry I don't have a solution for this, I keep this issue open. Apparently @peterbrown0's solution works.

[ghenry]

Hi all,

I'm going to close this as its been over a year now and we presume you're all OK?

If not, please re-open.

Thanks, Gavin.