之前用OC一直不能播放声音,改为用swift就可以播放声音啦
let utterance =AVSpeechUtterance(string: text)
utterance.voice = AVSpeechSynthesisVoice(language: AVSpeechSynthesisVoice.currentLanguageCode())
utterance.rate=0.5
utterance.volume=0.8
utterance.pitchMultiplier=0.1
self.synthesizer.speak(utterance)
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