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ColoredArcs

This is an demonstration of updating CAShapeLayer as gesture changes in Objective-C.

Note, I also used IB_DESIGNABLE view so that you can render (and customize the appearance) in Interface Builder storyboard. You don't have to do this, but it makes designing of user interfaces a little easier.

Example image

See https://stackoverflow.com/a/48407910/1271826.

This was developed in Objective-C on Xcode 9.2 for iOS 11.2. But, the basic ideas are equally applicable for different versions of Objective-C and iOS versions.

License

Copyright © 2018 Robert Ryan. All rights reserved.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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6 February 2018

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