objective c - iOS shapes animation -

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i'm starting first app development , before laying out structure of app need understand how can accomplish complex shapes animations uikit (possibly).

i came across animated picture on dribbble , replicate effect in test app, understand how kind of animations accomplished.

this animation i'm talking about...

firstly thought create keyframe animation (multiple images) , animate it, sounds pretty inefficient. need use uibeizerpath or other core graphics stuff.

what suggest me re-create effect? in advance.

p.s: possibly if include code snippets, obj-c best choice instead of swift.

this site has break down of how you'd accomplish this.

basically, use shape layer path entire curve taken middle line during animation. use stroke start , stroke end properties of shape layer transition horizontal line circle. have 2 other shape layers 2 horizontal lines rotate cross.


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