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"

See example Xcode project. It also contains additional classes for convenient grouping of 3 ring progress views replicating Activity app by Apple.

MKRingProgressView can be set up in Storyboard. Specify startColor, endColor, ringWidth and optional backgroundRingColor (if not set, defaults to startColor with 15% opacity).

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 8.0
• Xcode 9, Swift 4

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