我对 iOS 完全陌生，我正在开发一个具有许多帧动画的应用程序。一切都很顺利，直到我尝试用我在下面发布的方法制作我的最终动画。该方法是分配给内置文本到语音合成器的委托(delegate)
func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) {
if spoken == 0{
spoken += 1
print("speaking finished")
self.ImageView.stopAnimating()
self.ImageView.image = self.circleImages.last
self.ImageView.animationImages = self.circleImages
self.ImageView.animationDuration = 1.5
self.ImageView.animationRepeatCount = 0
self.ImageView.startAnimating()
do{
try self.recordAndRecognizeSpeech()
}catch let error{
print(error)
}
}else if spoken == 1{
//animation 1
spoken += 1
//animation 1
self.ImageView.image = self.comingOutImages.first
self.ImageView.animationImages = self.comingOutImages
self.ImageView.animationDuration = 6.0
self.ImageView.animationRepeatCount = 1
self.ImageView.startAnimating()
print(String(self.comingOutImages.count) + " #of images")
print("should have animated go in" + String(spoken))
}else{
print("done")
}
}
口语 == 0 的方法的第一个 block ，该动画工作正常，但是当它到达口语 == 1 的 block 时，动画不播放它设置图像但不播放动画。我一直在环顾四周，我试图在主线程和其他一些东西上运行它。
编辑:
我有这个方法，它是上面动画之前的动画，除非将animationRepeatCount设置为0，否则不会播放，如果我将此动画设置为0以外的任何值，那么上面的动画会播放，但这个动画不会播放。在这种方法中，我将动画重复计数设为 16，然后上面的动画有效，但这个无效。我想将此动画设置为repeatCount 0，并在完成语音后将上面的动画触发为repeatCount 1。我对iOS很陌生，有些事情我做得不对。
func handleSend(){
if Thread.isMainThread{
print("send on main thread")
}else{
print("send not on main thread")
}
do{
try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default)
try AVAudioSession.sharedInstance().setActive(true)
}catch{}
//UIView.animate(withDuration: 4.0, animations: {
//animation 2
print("second animation")
self.imageView.stopAnimating()
self.imageView.image = self.talkingImages.last
self.imageView.animationImages = self.talkingImages
self.imageView.animationDuration = 0.25
self.imageView.animationRepeatCount = 16
self.imageView.startAnimating()
print("should have animated")
//})
let utterance = AVSpeechUtterance(string: self.finalString)
//utterance.voice = AVSpeechSynthesisVoice(language: "en-GB")
//utterance.rate = 0.1
self.synthesizer.speak(utterance)
}
EDIT2:我发布整个viewController仅供引用，它不会让我因为它超过字符限制，但我会发布所有动画并解释流程
这是用于触摸 ImageView 的 touchended 覆盖方法，它也是第一个动画开始的地方。
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
timesRubbed += 1
if timesRubbed == 1{
player?.stop()
//Toast(text: keepRubbing).show()
self.view.makeToast(keepRubbing, duration: 3.0, position: .top)
}
if timesRubbed == 2{
player?.stop()
//Toast(text: keepAgain).show()
self.view.makeToast(keepAgain, duration: 3.0, position: .top)
}
if timesRubbed == 3{
player?.stop()
timesRubbed += 1
playSoundComeOut()
CATransaction.begin()
CATransaction.setCompletionBlock {
print("after animation 1")
DispatchQueue.main.async {
CATransaction.begin()
CATransaction.setCompletionBlock{
print("after circle animation")
//UIView.animate(withDuration: 3.0, animations: {
//animation 2
print("second animation")
//self.imageView.stopAnimating()
self.imageView.image = self.talkingImages.last
self.imageView.animationImages = self.talkingImages
self.imageView.animationDuration = 0.25
self.imageView.animationRepeatCount = 0
self.imageView.startAnimating()
print("should have animated")
//})
let utterance = AVSpeechUtterance(string: self.greeting)
//utterance.voice = AVSpeechSynthesisVoice(language: "en-GB")
//utterance.rate = 0.1
self.synthesizer.speak(utterance)
//CATransaction.commit()
}
//UIView.animate(withDuration: 3.0, animations: {
//animation 2
print("second animation")
self.imageView.stopAnimating()
self.imageView.image = self.circleImages.last
self.imageView.animationImages = self.circleImages
self.imageView.animationDuration = 1.5
self.imageView.animationRepeatCount = 2
self.imageView.startAnimating()
print("should have animated")
//})
CATransaction.commit()
}
}
//UIView.animate(withDuration: 6.0, animations: {
//animation 1
if self.imageView.isFocused{
print("imageview is focused")
}else{
print("not focused")
}
self.imageView.image = self.comingOutImages.last
self.imageView.animationImages = self.comingOutImages
self.imageView.animationDuration = 6.0
self.imageView.animationRepeatCount = 1
self.imageView.startAnimating()
// })
CATransaction.commit() }
}
然后在该动画序列的结尾，它转到 SpeechSynthesizer 方法，其中
spoken == 0然后它执行handleSend()上面发布的方法，然后返回到上面的 SpeechSynthesizer 方法，其中 speak == 1如果您需要更多信息，请告诉我
最佳答案
我最终为最后一个动画做了这个并且它有效
self.imageView.stopAnimating()
self.imageView.image = self.goingInImages.last
self.imageView.layer.removeAllAnimations()
let animation = CAKeyframeAnimation(keyPath: #keyPath(CALayer.contents))
animation.values = self.goingInImages.map {$0.cgImage!}
//animation.keyTimes = [0.0, 0.25, 0.5, 0.75, 1.0]
animation.calculationMode = .discrete
animation.duration = 6.0
animation.repeatCount = 1
self.imageView.layer.add(animation, forKey: nil)
关于ios - 动画播放与否取决于链接动画的 animationRepeatCount，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60766734/