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fixes https://github.com/flutter/flutter/issues/138289 --- SegmentedButtom.styleFrom has been added to the segment button, so there is no longer any need to the button style from the beginning. It works like ElevatedButton.styleFrom only I added selectedForegroundColor, selectedBackgroundColor. In this way, the user will be able to change the color first without checking the MaterialState states. I added tests of the same controls. #129215 I opened this problem myself, but I was rejected because I handled too many items in a PR. For now, I wrote a structure that only handles MaterialStates instead of users. old (still avaliable) <img width="626" alt="image" src="https://github.com/flutter/flutter/assets/65075121/9446b13b-c355-4d20-bda2-c47a23d42d4f"> new (just an option for developer) <img width="483" alt="image" src="https://github.com/flutter/flutter/assets/65075121/0a645257-4c83-4029-9484-bd746c02265f"> ### Code sample <details> <summary>expand to view the code sample</summary> ```dart import 'package:flutter/material.dart'; /// Flutter code sample for [SegmentedButton]. void main() { runApp(const SegmentedButtonApp()); } enum Calendar { day, week, month, year } class SegmentedButtonApp extends StatefulWidget { const SegmentedButtonApp({super.key}); @override State<SegmentedButtonApp> createState() => _SegmentedButtonAppState(); } class _SegmentedButtonAppState extends State<SegmentedButtonApp> { Calendar calendarView = Calendar.day; @override Widget build(BuildContext context) { return MaterialApp( theme: ThemeData(useMaterial3: true), home: Scaffold( body: Center( child: SegmentedButton<Calendar>( style: SegmentedButton.styleFrom( foregroundColor: Colors.amber, visualDensity: VisualDensity.comfortable, ), // style: const ButtonStyle( // foregroundColor: MaterialStatePropertyAll<Color>(Colors.deepPurple), // visualDensity: VisualDensity.comfortable, // ), segments: const <ButtonSegment<Calendar>>[ ButtonSegment<Calendar>( value: Calendar.day, label: Text('Day'), icon: Icon(Icons.calendar_view_day)), ButtonSegment<Calendar>( value: Calendar.week, label: Text('Week'), icon: Icon(Icons.calendar_view_week)), ButtonSegment<Calendar>( value: Calendar.month, label: Text('Month'), icon: Icon(Icons.calendar_view_month)), ButtonSegment<Calendar>( value: Calendar.year, label: Text('Year'), icon: Icon(Icons.calendar_today)), ], selected: <Calendar>{calendarView}, onSelectionChanged: (Set<Calendar> newSelection) { setState(() { calendarView = newSelection.first; }); }, ), ), ), ); } } ``` </details>
37 lines
1.3 KiB
Dart
37 lines
1.3 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_api_samples/material/segmented_button/segmented_button.1.dart'
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as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Can use SegmentedButton.styleFrom to customize SegmentedButton', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.SegmentedButtonApp(),
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);
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final Color unselectedBackgroundColor = Colors.grey[200]!;
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const Color unselectedForegroundColor = Colors.red;
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const Color selectedBackgroundColor = Colors.green;
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const Color selectedForegroundColor = Colors.white;
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Material getMaterial(String text) {
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return tester.widget<Material>(find.ancestor(
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of: find.text(text),
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matching: find.byType(Material),
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).first);
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}
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// Verify the unselected button style.
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expect(getMaterial('Day').textStyle?.color, unselectedForegroundColor);
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expect(getMaterial('Day').color, unselectedBackgroundColor);
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// Verify the selected button style.
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expect(getMaterial('Week').textStyle?.color, selectedForegroundColor);
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expect(getMaterial('Week').color, selectedBackgroundColor);
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});
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}
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