Ring progress view similar to Activity app on Apple Watch

• Progress animation
• Customizable start/end and backdrop ring colors
• Customizable ring width
• Customizable progress line end style
• Customizable shadow under progress line end
• Progress values above 100% (or 360°) can also be displayed

To install MKRingProgressView via CocoaPods, add the following line to your Podfile:

pod 'MKRingProgressView'

To install MKRingProgressView via Carthage, add the following line to your Cartfile:

github "maxkonovalov/MKRingProgressView"

Note: Instructions below are for using SwiftPM without the Xcode UI. It's the easiest to go to your Project Settings -> Swift Packages and add MKRingProgressView from there.

To integrate using Apple's Swift package manager, without Xcode integration, add the following as a dependency to your Package.swift:

.package(url: "https://github.com/maxkonovalov/MKRingProgressView.git", .upToNextMajor(from: "2.3.0"))

See the example Xcode project. It contains 2 targets:

• ProgressRingExample - a simple example containing a single progress ring with adjustable parameters.
• ActivityRingsExample - an advanced usage example replicating Activity app by Apple. It also contains additional classes for convenient grouping of 3 ring progress views together.

MKRingProgressView can be set up in Interface Builder. To use it, set the custom view class to MKRingProgressView. Most of the control's parameters can be customized in Interface Builder.

let ringProgressView = RingProgressView(frame: CGRect(x: 0, y: 100, width: 100, height: 100))
ringProgressView.startColor = .red
ringProgressView.endColor = .magenta
ringProgressView.ringWidth = 25
ringProgressView.progress = 0.0
view.addSubview(ringProgressView)

The progress value can be animated the same way you would normally animate any property using UIView's block-based animations:

UIView.animate(withDuration: 0.5) {
    ringProgressView.progress = 1.0
}

To achieve better performance the following options are possible:

• Set gradientImageScale to lower values like 0.5 (defaults to 1.0)
• Set startColor and endColor to the same value
• Set shadowOpacity to 0.0
• Set allowsAntialiasing to false

• iOS 9.0
• tvOS 9.0

MKRingProgressView is available under the MIT license. See the LICENSE file for more info.