:octocat:💧 A slider widget with a popup bubble displaying the precise value selected. Swift UI library made by @Ramotion
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Latest commit 7acf118 Sep 27, 2018



Fluid Slider

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Inspired by Virgil Pana shot

Check this library on other platforms:

Looking for developers for your project?
This project is maintained by Ramotion, Inc. We specialize in the designing and coding of custom UI for Mobile Apps and Websites.

The iPhone mockup available here.


iOS 10.0
Xcode 9
Swift 4.0


You can install fluid-slider in several ways:

  • Add source files to your project.

pod 'fluid-slider'

github "Ramotion/fluid-slider"



import fluid_slider

The slider can be inserted in a view hierarchy as a subview. Appearance can be configured with a number of public attributes:

let slider = Slider()
slider.attributedTextForFraction = { fraction in
    let formatter = NumberFormatter()
    formatter.maximumIntegerDigits = 3
    formatter.maximumFractionDigits = 0
    let string = formatter.string(from: (fraction * 500) as NSNumber) ?? ""
    return NSAttributedString(string: string)
slider.setMinimumLabelAttributedText(NSAttributedString(string: "0"))
slider.setMaximumLabelAttributedText(NSAttributedString(string: "500"))
slider.fraction = 0.5
slider.shadowOffset = CGSize(width: 0, height: 10)
slider.shadowBlur = 5
slider.shadowColor = UIColor(white: 0, alpha: 0.1)
slider.contentViewColor = UIColor(red: 78/255.0, green: 77/255.0, blue: 224/255.0, alpha: 1)
slider.valueViewColor = .white

Take a look at the Example project for an integration example.

Since Slider is a subclass of UIControl, it inherits target-action mechanics and it's possible to listen for user-triggered value changes:

slider.addTarget(self, action: #selector(sliderValueChanged), for: .valueChanged)

Tracking Behavior

There are a couple of callbacks which allow you to listen to the slider's tracking events:

    var didBeginTracking: ((Slider) -> ())?
    var didEndTracking: ((Slider) -> ())?

Animation Performance

This control is designed to use device CPU resources with care. The fluid-style animation will be disabled when low power mode is enabled or the system is under heavy load.

This library is a part of a selection of our best UI open-source projects.

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