MultiSlider

UISlider clone with multiple thumbs and values, range highlight, optional snap intervals, optional value labels, either vertical or horizontal.

Features

• Multiple thumbs
• Range slider (optional) - track color between thumbs different from track color outside thumbs
• Vertical (optional)
• Value labels (optional)
• Snap interval (optional)
• Haptic feedback
• Configurable thumb image, minimum and maximum images.
• Configurable track width, color, rounding.

Usage

let slider = MultiSlider()
slider.minimumValue = 1    // default is 0.0
slider.maximumValue = 5    // default is 1.0

slider.value = [1, 4.5, 5]

slider.addTarget(self, action: #selector(sliderChanged(_:)), for: .valueChanged) // continuous changes
slider.addTarget(self, action: #selector(sliderDragEnded(_:)), for: . touchUpInside) // sent when drag ends

SwiftUI

Use MultiValueSlider from the swiftui branch.

Getting multiple thumb values

Use value to get all thumbs values, and draggedThumbIndex to find which thumb was last moved.

func sliderChanged(slider: MultiSlider) {
    print("thumb \(slider.draggedThumbIndex) moved")
    print("now thumbs are at \(slider.value)") // e.g., [1.0, 4.5, 5.0]
}

Range slider

slider.outerTrackColor = .lightGray // outside of first and last thumbs

Vertical / horizontal orientation

slider.orientation = .horizontal // default is .vertical
slider.isVertical = false // same effect, but accessible from Interface Builder

Value labels

slider.valueLabelPosition = .left // .notAnAttribute = don't show labels
slider.isValueLabelRelative = true // show differences between thumbs instead of absolute values
slider.valueLabelFormatter.positiveSuffix = " 𝞵s"
slider.valueLabelColor = .green
slider.valueLabelFont = someFont

Snap interval

slider.snapStepSize = 0.5 // default is 0.0, i.e. don't snap
slider.isHapticSnap = false // default is true, i.e. generate haptic feedback when sliding over snap values

Changing Appearance

slider.tintColor = .cyan // color of track
slider.trackWidth = 32
slider.hasRoundTrackEnds = true
slider.showsThumbImageShadow = false // wide tracks look better without thumb shadow

Images

// add images at the ends of the slider:
slider.minimumImage = UIImage(named: "clown")
slider.maximumImage = UIImage(named: "cloud")

// change image for all thumbs:
slider.thumbImage = UIImage(named: "balloon")

// or let each thumb have a different image:
slider.thumbViews[0].image = UIImage(named: "ball")
slider.thumbViews[1].image = UIImage(named: "club")

Distance/Overlap Between Thumbs

// allow thumbs to overlap:
slider.keepsDistanceBetweenThumbs = false

// make thumbs keep a greater distance from each other (default = half the thumb size):
slider.distanceBetweenThumbs = 3.14

Disabling/freezing thumbs

slider.disabledThumbIndices = [1, 3]

Requirements

• iOS 9.0+
• Xcode 10

Installation

CocoaPods:

pod 'MultiSlider'

Legacy versions:

Swift Package Manager:

dependencies: [
    .package(url: "https://github.com/yonat/MultiSlider", from: "1.11.2")
]

Meta

@yonatsharon

https://github.com/yonat/MultiSlider