ios - 动画播放与否取决于链接动画的 animationRepeatCount

Question

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

Answer 1

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)