flutter_knob

Description:

flutter knob

knob #
A simple knob UI widget.
Getting Started #
Add the dependency to your pubspec.yaml:
dependencies:
flutter:
sdk: flutter
flutter_knob: // Add it here
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This package provides a Knob widget with a similar API as Flutter's Slider widget.
Working example, showing the Knob controlling, and being controlled by a Slider:

import 'package:flutter/material.dart';

import 'package:flutter_knob/flutter_knob.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
}
}

class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
double _value = 0.0;
void _setValue(double value) => setState(() => _value = value);
static const double minValue = 0;
static const double maxValue = 10;

@override
Widget build(BuildContext context) {

return Scaffold(
appBar: AppBar(
title: Text('Flutter Tutorial'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Knob(
value: _value,
color: Colors.blue,
onChanged: _setValue,
min: minValue,
max: maxValue,
size: 50
),
Slider(
value: _value,
onChanged: _setValue,
min: minValue,
max: maxValue),
Text(
'Value: ${_value.toStringAsFixed(3)}',
),
],
),
),
);
}
}
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