swift - How To Implement A Circular Loader without SKShapeNode -


i want creat simple circular loader animation circle , border around disappearing

i found great frameworks use skshapenode , skshapenode performance terrible actual deployed app

progressnode: cool framework

you use uiview within uiimageview "loading circle" image , let rotate it. here example class:

import uikit  class circularloadingview: uiview {      @iboutlet weak var rotatingimage: uiimageview!     let duration: double = 1      func startanimation() {         let animation = cabasicanimation(keypath: "transform.rotation.z")         animation.tovalue = nsnumber(floatliteral:  m_pi * 2.0 * duration)         animation.duration = duration         animation.iscumulative = true         animation.repeatcount = float(cgfloat.greatestfinitemagnitude)         rotatingimage.layer.add(animation, forkey: "animationkey")          uiview.animate(withduration: duration, animations: {             self.alpha = 1         })     } }

just add uiview , set circularloadingview custom class. add uiimageview, set image want rotate, set outlets , constraints , see happens.

but attempt need image, have create or find.

if not you, perhaps old raywenderlich tutorial can. there show how make circular indicator cashapelayer.


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