Flutter 堆叠 GestureDetector 和滑块问题
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【中文标题】Flutter 堆叠 GestureDetector 和滑块问题【英文标题】:Flutter stacked GestureDetector and slider problem 【发布时间】:2022-01-22 04:41:06 【问题描述】:我有一个带有 GestureDetector 的堆栈,用于将图标转换为按钮和围绕它的圆形滑块。
Stack(
alignment: Alignment.center,
children: <Widget>[
BulbSlider(),
Positioned(
top: 25,
child: GestureDetector(
onTap: ()
debugPrint('pressed');
Vibrate.feedback(FeedbackType.selection);
,
child: Icon(
Icons.play_circle_fill_rounded,
color: kOrange,
size: 250,
),
),
),
],
),
screenshot
这是截图。 我的问题是,如果我尝试拖动手柄,则无法使用滑块,但如果单击滑块的轨道,它会起作用。如果我在滑块和按钮之间单击(所以在图标之外),GestureDetectoris 触发的按钮也存在问题。
我也尝试反转这两个小部件,因此我将滑块放在 GestureDetector 顶部,但在这种情况下,滑块效果很好,但 GestureDetector 未检测到任何点击。
代码如下:
Stack(
alignment: Alignment.center,
children: <Widget>[
Positioned(
top: 25,
child: GestureDetector(
onTap: ()
debugPrint('pressed');
Vibrate.feedback(FeedbackType.selection);
,
child: Icon(
Icons.play_circle_fill_rounded,
color: kOrange,
size: 250,
),
),
),
BulbSlider(),
],
),
如果它可以帮助我把滑块的代码放在这里:
import 'package:flutter/material.dart';
import 'package:sleek_circular_slider/sleek_circular_slider.dart';
import '/const/colors.dart';
class BulbSlider extends StatefulWidget
const BulbSlider(Key? key) : super(key: key);
@override
_State createState() => _State();
class _State extends State<BulbSlider>
double? myValue;
String valore = '';
@override
void initState()
super.initState();
myValue = 0;
valore = '1';
otherMethod(String rounded)
debugPrint("rounded: " + rounded);
valore = rounded;
@override
Widget build(BuildContext context)
final slider = SleekCircularSlider(
min: 1,
max: 360,
initialValue: 1,
appearance: CircularSliderAppearance(
size: 300,
startAngle: 140,
angleRange: 260,
animationEnabled: true,
customColors: CustomSliderColors(
hideShadow: true,
trackColor: kCards,
dotColor: kWhite,
progressBarColor: kOrange,
),
customWidths: CustomSliderWidths(
shadowWidth: 30,
trackWidth: 8,
progressBarWidth: 8,
handlerSize: 10,
),
infoProperties: InfoProperties(
mainLabelStyle: TextStyle(
color: kWhite, fontSize: 20, fontWeight: FontWeight.w700),
//topLabelStyle:
// TextStyle(color: kWhite, fontSize: 20, fontWeight: FontWeight.w700),
//topLabelText: 'Seconds',
modifier: (double value)
final sec = (value.toInt()) / 100;
return ''; // '$sec s';
,
),
),
onChange: (double weight)
setState(()
String newValue = weight.ceil().toInt().toString();
debugPrint(newValue);
otherMethod(newValue);
);
,
);
return Container(
child: Column(
children: <Widget>[
Center(child: slider),
Text(valore),
],
),
);
你知道如何解决吗? 谢谢
【问题讨论】:
【参考方案1】:您可以如下裁剪手势检测的有效区域:
Material(
// You can check the effective area of inkwell
// color: Colors.deepOrangeAccent,
borderRadius: BorderRadius.circular(250 / 2),
child: InkWell(
onTap: () ,
borderRadius: BorderRadius.circular(250 / 2),
child: const Icon(Icons.play_circle_fill_rounded,
color: kOrange,
size: 250,
),
),
)
在你的情况下,
import 'package:flutter/material.dart';
import 'package:sleek_circular_slider/sleek_circular_slider.dart';
const kCards = Colors.red;
const kOrange = Colors.orange;
const kWhite = Colors.white;
void main()
runApp(const MyApp());
class MyApp extends StatelessWidget
const MyApp(Key? key) : super(key: key);
@override
Widget build(BuildContext context)
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
class MyHomePage extends StatefulWidget
const MyHomePage(Key? key, required this.title) : super(key: key);
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
class _MyHomePageState extends State<MyHomePage>
@override
Widget build(BuildContext context)
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Stack(
alignment: Alignment.center,
children: <Widget>[
const BulbSlider(),
Positioned(
top: 25,
child: Material(
// You can check the effective area of the inkwell
// color: kOrange,
borderRadius: BorderRadius.circular(250 / 2),
child: InkWell(
onTap: ()
print('Hello there!');
,
borderRadius: BorderRadius.circular(250 / 2),
child: const Icon(
Icons.play_circle_fill_rounded,
color: kOrange,
size: 250,
),
),
),
),
],
),
);
class BulbSlider extends StatefulWidget
const BulbSlider(Key? key) : super(key: key);
@override
_State createState() => _State();
class _State extends State<BulbSlider>
double? myValue;
String valore = '';
@override
void initState()
super.initState();
myValue = 0;
valore = '1';
otherMethod(String rounded)
debugPrint("rounded: " + rounded);
valore = rounded;
@override
Widget build(BuildContext context)
final slider = SleekCircularSlider(
min: 1,
max: 360,
initialValue: 1,
appearance: CircularSliderAppearance(
size: 300,
startAngle: 140,
angleRange: 260,
animationEnabled: true,
customColors: CustomSliderColors(
hideShadow: true,
trackColor: kCards,
dotColor: kWhite,
progressBarColor: kOrange,
),
customWidths: CustomSliderWidths(
shadowWidth: 30,
trackWidth: 8,
progressBarWidth: 8,
handlerSize: 10,
),
infoProperties: InfoProperties(
mainLabelStyle: const TextStyle(
color: kWhite, fontSize: 20, fontWeight: FontWeight.w700),
//topLabelStyle:
// TextStyle(color: kWhite, fontSize: 20, fontWeight: FontWeight.w700),
//topLabelText: 'Seconds',
modifier: (double value)
// final sec = (value.toInt()) / 100;
return ''; // '$sec s';
,
),
),
onChange: (double weight)
setState(()
String newValue = weight.ceil().toInt().toString();
debugPrint(newValue);
otherMethod(newValue);
);
,
);
return Column(
children: <Widget>[
Center(child: slider),
Text(valore),
],
);
来源 - FlutterBeads。
【讨论】:
感谢您的回复,它可以工作,但现在我有一个无法删除的大白色区域(仅在深色背景下可见)。这是截图imgur.com/gallery/LP2f2ac你知道吗? 您可以取消注释颜色并将其更改为 Colors.transparent 吗?很抱歉给您带来不便 另外,这指出您的材质原色是白色(默认)。我认为你应该使用 MaterialApp 的主题来管理你的颜色。这样,您的主题将在小部件之间保持一致,并为您节省一些手动颜色设置。您可以查看here。以上是关于Flutter 堆叠 GestureDetector 和滑块问题的主要内容,如果未能解决你的问题,请参考以下文章