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Accessibility: repeated label on BottomNavigationBar fixed (#71587)

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Yash Johri 2020-12-16 22:53:02 +05:30 committed by GitHub
parent ea7017d3a8
commit 7ce8f4abae
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2 changed files with 74 additions and 0 deletions
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1
packages/flutter/lib/src/material/bottom_navigation_bar.dart
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@ -492,6 +492,7 @@ class _BottomNavigationTile extends StatelessWidget {
message: item.label!,
preferBelow: false,
verticalOffset: selectedIconSize + selectedFontSize,
excludeFromSemantics: true,
child: result,
);
}

73
packages/flutter/test/material/bottom_navigation_bar_test.dart
View file

@ -10,6 +10,7 @@ import 'package:flutter_test/flutter_test.dart';
import 'package:vector_math/vector_math_64.dart' show Vector3;
import '../rendering/mock_canvas.dart';
import '../widgets/semantics_tester.dart';
void main() {
testWidgets('BottomNavigationBar callback test', (WidgetTester tester) async {
@ -1786,6 +1787,78 @@ void main() {
expect(RendererBinding.instance!.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.click);
});
testWidgets('BottomNavigationBar excludes semantics',
(WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
bottomNavigationBar: BottomNavigationBar(
items: const <BottomNavigationBarItem>[
BottomNavigationBarItem(
label: 'A',
icon: Icon(Icons.ac_unit),
),
BottomNavigationBarItem(
label: 'B',
icon: Icon(Icons.battery_alert),
),
],
),
),
),
);
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
children: <TestSemantics>[
TestSemantics(
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
children: <TestSemantics>[
TestSemantics(
flags: <SemanticsFlag>[
SemanticsFlag.isSelected,
SemanticsFlag.isFocusable
],
actions: <SemanticsAction>[SemanticsAction.tap],
label: 'A\nTab 1 of 2',
textDirection: TextDirection.ltr,
),
TestSemantics(
flags: <SemanticsFlag>[SemanticsFlag.isFocusable],
actions: <SemanticsAction>[SemanticsAction.tap],
label: 'B\nTab 2 of 2',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
],
),
ignoreId: true,
ignoreRect: true,
ignoreTransform: true,
),
);
semantics.dispose();
});
}
Widget boilerplate({ Widget? bottomNavigationBar, required TextDirection textDirection }) {