syncfusion_flutter_sliders 18.2.55-beta

Syncfusion Flutter Sliders library is written natively in Dart for creating highly interactive and UI-rich slider controls for filtering purposes.

Syncfusion Flutter Sliders

Syncfusion Flutter Sliders library is written natively in Dart for creating highly interactive and UI-rich slider controls for filtering purposes in Flutter applications.

Overview

This library is used to create three different types of sliders, namely slider, range slider, and range selector. All these sliders have a rich set of features such as support for both numeric and date values, tooltip, labels, and ticks. The range selector latter accepts any kind of child including Charts.

Disclaimer: This is a commercial package. To use this package, you need to have either a Syncfusion Commercial License or Syncfusion Community license. For more details, please check the LICENSE file.

Note: Our packages are now compatible with Flutter for Web. However, this will be in Beta until Flutter for Web becomes stable.

Table of contents

• Slider features
• Range slider features
• Range selector features
• Get the demo application
• Useful links
• Installation
• Slider getting started
  • Add slider to the widget tree
  • Add slider elements
• Range slider getting started
  • Add range slider to the widget tree
  • Add range slider elements
• Range selector getting started
  • Add range selector to the widget tree
  • Add range selector elements
• Support and Feedback
• About Syncfusion

Slider features

• Numeric and date support - Select numeric and date value. For date, support is provided up to the 'Seconds' interval.

• Labels - Render labels for the date and numeric ranges with an option to customize formats based on the requirement.

• Ticks and divisors - Show ticks and divisors based on the interval. Also, enable minor ticks between the ticks to indicate the selected values. These options show the selected range in a more intuitive way for the end users.

• Tooltip - Render tooltip to show the selected value clearly. It is also possible to customize the format of the text shown in the tooltip.

• Thumb icon support - Accepts custom widgets like icon or text inside the thumb.

• Discrete selection - Provides an option for selecting only discrete numeric and date values.

• Highly customizable - In addition to the built-in rich set of features, fully customize the control easily using the wide range of provided options.

Range slider features

Range slider supports all the above-mentioned features of the slider in addition to:

• Interval selection - Allows users to select a particular interval by tapping or clicking in it. Both thumbs will be moved to the current interval with animation.

Range selector features

Range selector supports all the above-mentioned features of the range slider in addition to:

• Child support - Add a child of any type inside the range selector. It is also possible to add Charts. With the built-in integration, range selector is smart enough to handle features like segment selection or zooming of a chart based on the selected range in the range selector. Similar to the range slider, it also supports both numeric and date values.

• Deferred update - Provides an option to defer range updates, allowing you to control when dependent components are updated while thumbs are being dragged continuously.

Get the demo application

Explore the full capability of our Flutter widgets on your device by installing our sample browser application from the following app stores. View sample codes in GitHub.

Useful links

Take a look at the following to learn more about Syncfusion Flutter sliders:

• Syncfusion Flutter Sliders product page
• User guide documentation for Slider
• User guide documentation for Range Slider
• User guide documentation for Range Selector
• Knowledge base

Installation

Install the latest version from pub.

Slider getting started

Import the following package.

import 'package:syncfusion_flutter_sliders/sliders.dart';

Add slider to the widget tree

Add the slider widget as a child of any widget. Here, the slider widget is added as a child of the center widget.

@override
Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            body: Center(
                child: SfSlider(),
              ),
          ),
      );
}

Add slider elements

Add the slider elements such as ticks, labels, and tooltip to show the current position of the slider thumb.

double _value = 40.0;

@override
Widget build(BuildContext context) {
  return Scaffold(
     appBar: AppBar(
       title: const Text('Syncfusion Flutter Slider'),
     ),
     body: SfSlider(
       min: 0.0,
       max: 100.0,
       value: _value,
       interval: 20,
       showTicks: true,
       showLabels: true,
       showTooltip: true,
       minorTicksPerInterval: 1,
       onChanged: (dynamic value){
         setState(() {
           _value = value;
         });
       },
     ),
   );
}

The following screenshot illustrates the result of the above code sample.

Range slider getting started

Import the following package.

import 'package:syncfusion_flutter_sliders/sliders.dart';

Add range slider to the widget tree

Add the range slider widget as a child of any widget. Here, the range slider widget is added as a child of the center widget.

@override
Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            body: Center(
                child: SfRangeSlider(),
              ),
          ),
      );
}

Add range slider elements

Add the range slider elements such as ticks, labels, and tooltips to show the current position of the range slider thumb.

SfRangeValues _values = SfRangeValues(40.0, 80.0);

@override
Widget build(BuildContext context) {
   return Scaffold(
     appBar: AppBar(
       title: const Text('Syncfusion Flutter Range Slider'),
     ),
     body: SfRangeSlider(
        min: 0.0,
        max: 100.0,
        values: _values,
        interval: 20,
        showTicks: true,
        showLabels: true,
        showTooltip: true,
        minorTicksPerInterval: 1,
        onChanged: (SfRangeValues values){
          setState(() {
            _values = values;
          });
        },
      ),
   );
}

The following screenshot illustrates the result of the above code sample.

Range selector getting started

Import the following package.

import 'package:syncfusion_flutter_sliders/sliders.dart';

Add range selector to the widget tree

Add the range selector widget as a child of any widget. Here, the range selector widget is added as a child of the center widget.

@override
Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            body: Center(
                child: SfRangeSelector(),
            ),
        ),
    );
}

Add range selector elements

Add a child of any type inside the range selector. Here, the Charts widget is added as a child of the range selector.

final DateTime dateMin = DateTime(2003, 01, 01);
final DateTime dateMax = DateTime(2010, 01, 01);
final SfRangeValues dateValues = SfRangeValues(DateTime(2005, 01, 01), DateTime(2008, 01, 01));

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Syncfusion Flutter Range Selector'),
      ),
      body: Container(
          margin: const EdgeInsets.all(0),
          padding: const EdgeInsets.all(0),
          child: Stack(
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.only(top: 10),
                child: Center(
                  child: SfRangeSelector(
                    min: dateMin,
                    max: dateMax,
                    initialValues: dateValues,
                    labelPlacement: LabelPlacement.betweenTicks,
                    interval: 1,
                    dateIntervalType: DateIntervalType.years,
                    dateFormat: DateFormat.y(),
                    showTicks: true,
                    showLabels: true,
                    child: Container(
                      child: SfCartesianChart(
                        margin: const EdgeInsets.all(0),
                        primaryXAxis: DateTimeAxis(
                          minimum: dateMin,
                          maximum: dateMax,
                          isVisible: false,
                        ),
                        primaryYAxis: NumericAxis(isVisible: false, maximum: 4),
                        series: <SplineAreaSeries<Data, DateTime>>[
                          SplineAreaSeries<Data, DateTime>(
                              dataSource: chartData,
                              xValueMapper: (Data sales, _) => sales.x,
                              yValueMapper: (Data sales, _) => sales.y)
                        ],
                      ),
                      height: 200,
                    ),
                  ),
                ),
              ),
            ],
          )),
    );
  }

The following screenshot illustrates the result of the above code sample.

Support and Feedback

• For any other queries, reach our Syncfusion support team or post the queries through the Community forums and submit a feature request or a bug through our Feedback portal.
• To renew the subscription, click renew or contact our sales team at [e-mail] | Toll Free: 1-888-9 DOTNET.

About Syncfusion

Founded in 2001 and headquartered in Research Triangle Park, N.C., Syncfusion has more than 20,000 customers and more than 1 million users, including large financial institutions, Fortune 500 companies, and global IT consultancies.

Today we provide 1,000+ controls and frameworks for web (ASP.NET Core, ASP.NET MVC, ASP.NET WebForms, JavaScript, Angular, React, Vue, and Blazor), mobile (Xamarin, Flutter, UWP, and JavaScript), and desktop development (WinForms, WPF, and UWP). We provide ready-to deploy enterprise software for dashboards, reports, data integration, and big data processing. Many customers have saved millions in licensing fees by deploying our software.