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Description:

selector wheel

Selector Wheel #

A Flutter package for creating customizable selector wheel widgets.
Table of Contents #

Features
Getting started
Usage

Basic usage
Customizing the selector wheel

Contributing
License

Features #

Customizable selector wheel widget
Supports variable wheel size, item width, item height, and more
Built with Flutter's best practices for optimal performance
Supports haptic feedback, fade-out effect, and more
Can be used with any data type

Getting started #
Add selector_wheel to your pubspec.yaml by running the following command:
flutter pub add selector_wheel
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Usage #
Import the package:
import 'package:selector_wheel/selector_wheel.dart';
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Basic usage #
Use the SelectorWheel widget in your app:
SizedBox(
width: 200,
height: 200,
child: SelectorWheel(
childCount: 10,
// convertIndexToValue is a function that converts the index of the
// child to a value that is displayed on the selector wheel. In this
// case, we are converting the index to a string. I.e we'll have
// 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 on the selector wheel.
convertIndexToValue: (int index) {
return SelectorWheelValue(
label: index.toString(),
value: index,
index: index,
);
},
onValueChanged: (SelectorWheelValue<int> value) {
// print the value that was selected
print(value);
},
),
)
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Customizing the selector wheel #
Keep in mind, that the convertIndexToValue function can be used to convert the index to any value.
In the example below, we are converting the index to a double value to represent quarter lbs.
SizedBox(
width: 200,
height: 200,
child: SelectorWheel(
childCount: 10,
convertIndexToValue: (int index) {
// This is just to illustrate, that the index can be converted
// to any value. In this case, we are converting the index to
// a quarter of a pound.
final quarter = index / 4;

return SelectorWheelValue(
// The label is what is displayed on the selector wheel
label: '${quarter.toString()} lb',
value: quarter,
index: index,
);
},
onValueChanged: (SelectorWheelValue<double> value) {
// print the value that was selected
print(value);
},
),
)
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The colors of the selector wheel can be customized by overriding the ThemeData in the following way:
// Overriding the colors of the selector wheel
Theme(
data: ThemeData(
textTheme: Theme.of(context).textTheme.copyWith(
titleLarge: Theme.of(context).textTheme.titleLarge?.copyWith(
fontSize: 24.0,
fontWeight: FontWeight.w600,
),
),
colorScheme: Theme.of(context).colorScheme.copyWith(
surface: Colors.black,
onSurface: Colors.white,
secondaryContainer: Colors.amber,
),
),
child: SizedBox(
width: 200,
height: 200,
child: SelectorWheel(
childCount: 10,
highlightBorderRadius: 16.0,
highlightHeight: 40.0,
highlightWidth: 100.0,
convertIndexToValue: (int index) {
return SelectorWheelValue(
label: index.toString(),
value: index,
index: index,
);
},
onValueChanged: (value) {
// print the value that was selected
print(value);
},
),
),
)
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Notice, that we're also customizing the "highlighted" item's border radius, height, and width. To see
all the customizable properties, check out the SelectorWheel class.
Contributing #
Contributions are welcome! If you find a bug or have a feature request, please open an issue on the GitHub repository.
License #
This package is licensed under the MIT License. For more details, please refer to the LICENSE file included in the repository.