macOS:Mojave 10.14.4 Beta
iOS:12.2试用版
Xcode:10.2测试版
我使用的是AVSpeechSynthesizer
,但是下面的代码无法从暂停位置恢复。
// The pause functionality works fine
if (synth.isSpeaking) {
synth.pauseSpeaking(at: AVSpeechBoundary.word)
}
// But continueSpeaking always starting from the beginning.
if (synth.isPaused) {
synth.continueSpeaking();
}
如何从离开的地方继续?我想念什么吗?
答案 0 :(得分:1)
我实现了以下代码来检查您的问题(Mojave 10.14.4
,iOS 12.2
,Xcode 10.2.1
和swift 5.0
下的测试):
class SpeechSynthesis: UIViewController {
var synthesizer = AVSpeechSynthesizer()
var playQueue = [AVSpeechUtterance]()
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
for i in 1...10 {
let stringNb = "number " + String(i) + " of the speech synthesizer."
let utterance = AVSpeechUtterance(string: stringNb)
playQueue.append(utterance)
}
for utterance in playQueue {
synthesizer.speak(utterance)
}
}
@IBAction func pauseButton(_ sender: UIButton) {
if (synthesizer.isSpeaking == true) {
if (synthesizer.pauseSpeaking(at: .immediate) == true) {
print("PAUSE")
} else {
print("P.R.O.B.L.E.M. when pausing.")
}
}
}
@IBAction func resumeButton(_ sender: UIButton) {
if (synthesizer.isPaused == true) {
if (synthesizer.continueSpeaking() == true) {
print("CONTINUE")
} else {
print("P.R.O.B.L.E.M. when resuming.")
}
}
}
}
我注意到边界.word
的另一个问题在触发时并不总是暂停,但是当此约束更改为.immediate
时,一切都从暂停位置恢复
但是,当它很少在边界.word
处暂停时,它也always resumes从其暂停处开始。
我不知道您的问题来自哪里,但是有了上述配置和此代码段,语音合成器从暂停的位置恢复。