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NavigationRail correct traversal order (#173891)

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Fix [[VPAT] [A11y] Navigation Rail has unexpected semantics traversal
order](https://github.com/flutter/flutter/issues/172992)
This commit is contained in:
Victor Sanni 2025-08-19 15:31:18 -07:00 committed by GitHub
parent a51141a36d
commit 4befa37166
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GPG Key ID: B5690EEEBB952194
2 changed files with 24 additions and 21 deletions
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43
packages/flutter/lib/src/material/navigation_rail.dart
View File

@ -524,28 +524,31 @@ class _NavigationRailState extends State<NavigationRail> with TickerProviderStat
mainGroup = SingleChildScrollView(child: mainGroup);
}
return _ExtendedNavigationRailAnimation(
animation: _extendedAnimation,
child: Semantics(
explicitChildNodes: true,
child: Material(
elevation: elevation,
color: backgroundColor,
child: SafeArea(
right: isRTLDirection,
left: !isRTLDirection,
child: Column(
children: <Widget>[
_verticalSpacer,
if (widget.leadingAtTop && widget.leading != null) ...<Widget>[
widget.leading!,
return Semantics(
container: true,
child: _ExtendedNavigationRailAnimation(
animation: _extendedAnimation,
child: Semantics(
explicitChildNodes: true,
child: Material(
elevation: elevation,
color: backgroundColor,
child: SafeArea(
right: isRTLDirection,
left: !isRTLDirection,
child: Column(
children: <Widget>[
_verticalSpacer,
if (widget.leadingAtTop && widget.leading != null) ...<Widget>[
widget.leading!,
_verticalSpacer,
],
Flexible(
child: Align(alignment: Alignment(0, groupAlignment), child: mainGroup),
),
if (widget.trailingAtBottom && widget.trailing != null) widget.trailing!,
],
Flexible(
child: Align(alignment: Alignment(0, groupAlignment), child: mainGroup),
),
if (widget.trailingAtBottom && widget.trailing != null) widget.trailing!,
],
),
),
),
),

2
packages/flutter/test/material/navigation_rail_test.dart
View File

@ -6201,7 +6201,7 @@ TestSemantics _expectedSemantics({bool scrollable = false}) {
TestSemantics(
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
...destinations,
TestSemantics(children: destinations),
TestSemantics(label: 'body', textDirection: TextDirection.ltr),
],
),