David Vardanyan David Vardanyan - 5 months ago 51
Swift Question

Animations not working in ios playgroung

This is my animation method (PreloaderView.swift)

public func performAction(action: PreloaderAction)
{
let highOpacity = CABasicAnimation.init(keyPath: "opacity")
let middleOpacity = CABasicAnimation.init(keyPath: "opacity")
let lowOpacity = CABasicAnimation.init(keyPath: "opacity")

if action == .PreloaderActionNone {
self.thirdShape.removeAllAnimations()
self.firstShape.opacity = 0.3;
self.secondShape.opacity = 0.5
self.thirdShape.opacity = 1.0
} else if action == .PreloaderActionFailure {
UIView.animateWithDuration(2, animations: {
self.thirdShape.strokeColor = UIColor.redColor().CGColor
}) {(completed : Bool) in
self.thirdShape.strokeColor = self.ringColor.CGColor
}

}

if action == .PreloaderActionStart {

highOpacity.fromValue = 0.0
highOpacity.toValue = 1.0
highOpacity.duration = animationDuration
highOpacity.autoreverses = true
highOpacity.repeatCount = .infinity
self.secondShape.addAnimation(highOpacity, forKey: "highOpacity")

middleOpacity.fromValue = 0.0
middleOpacity.toValue = 1.0
middleOpacity.duration = animationDuration
middleOpacity.autoreverses = true
middleOpacity.repeatCount = .infinity
middleOpacity.beginTime = CACurrentMediaTime() + 0.33
self.firstShape.addAnimation(middleOpacity, forKey: "middleOpacity")

lowOpacity.fromValue = 0.0
lowOpacity.toValue = 1.0
lowOpacity.duration = animationDuration
lowOpacity.autoreverses = true
lowOpacity.beginTime = CACurrentMediaTime() + 0.66
lowOpacity.repeatCount = .infinity
self.thirdShape.addAnimation(lowOpacity, forKey: "lowOpacity")

}
}


This is my playground file



and playground in project navigator



Animations work fine on device, but when I use playground animations not working.

Answer

Xcode 7, Swift 2

Add

import XCPlayground

at the top of the Playground, then use

XCPlaygroundPage.currentPage.liveView = view

at the bottom of the Playground, where view is the view you want to render.

You also have to open the "Assistant Editor" (in the "View" menu) to see the current live view.

Also, if you're using asynchronous operations, you have to include

XCPlaygroundPage.currentPage.needsIndefiniteExecution = true

in order to use them in a Playground.

Xcode 8, Swift 3

import PlaygroundSupport
PlaygroundPage.current.needsIndefiniteExecution = true
PlaygroundPage.current.liveView = view