如何在颤振中覆盖样式

Question

我正在使用flutter_fortune_wheel来制作轮盘赌游戏

在文档中我可以自定义，但是。

当我像这样使用FortuneWheel

FortuneWheel(
selected: Stream.value(0),
items: [
FortuneItem(
child: Text('A'),
style: FortuneItemStyle(
color: Colors.red, // <-- custom circle slice fill color
borderColor: Colors.green, // <-- custom circle slice stroke color
borderWidth: 3, // <-- custom circle slice stroke width
),
),
FortuneItem(child: Text('B')),
],
)

color is working fine

但FortuneBar不工作

FortuneBar(
// using alternating item styles on a fortune bar
styleStrategy: AlternatingStyleStrategy(),
selected: Stream.value(0),
items: [
FortuneItem(
child: Text('A'),
style: FortuneItemStyle(
color: Colors.red, // <-- custom circle slice fill color
borderColor: Colors.green, // <-- custom circle slice stroke color
borderWidth: 3, // <-- custom circle slice stroke width
),
),
FortuneItem(child: Text('B')),
],
)

也没有错误

所以问题是我如何为FortuneBar覆盖FortuneItem的背景色

谢谢

Answer 1

找到了:

styleStrategy: UniformStyleStrategy(
color: Colors.red, / 
borderColor: Colors.green,  
borderWidth: 3,
),

或在ThemeData,primarySwatch: Colors.green,

下面是完整的例子

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_fortune_wheel/flutter_fortune_wheel.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.green,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key? key, required this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
StreamController<int> selected = StreamController<int>();
@override
void dispose() {
selected.close();
super.dispose();
}
@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
final items = <String>[
'Grogu',
'Mace Windu',
'Obi-Wan Kenobi',
'Han Solo',
'Luke Skywalker',
'Darth Vader',
'Yoda',
'Ahsoka Tano',
];
return Scaffold(
appBar: AppBar(
title: Text('Flutter Fortune Wheel'),
),
body: GestureDetector(
onTap: () {
setState(() {
selected.add(
Fortune.randomInt(0, items.length),
);
});
},
child: Column(
children: [
Expanded(
child: FortuneBar(
selected: selected.stream,
styleStrategy: UniformStyleStrategy(
color: Colors.red, // <-- custom circle slice fill color
borderColor: Colors.green, // <-- custom circle slice stroke color
borderWidth: 3,
textAlign: TextAlign.end
),
items: [
for (var it in items) FortuneItem(child: Text(it)),
],
),
),
],    ),
),
);
}
}