小賢的部落格

import UIKit
import AVFoundation

extension Date {
    func toString(format: String) -> String {
        let dateFormat = DateFormatter()
        dateFormat.dateFormat = format
        
        return dateFormat.string(from: self)
    }
}

class ViewController: UIViewController {
    
    @IBOutlet weak var textView: UITextView!
    
    let synth = AVSpeechSynthesizer()
    var timer = Timer()
    
    @IBAction func startHandler(_ sender: UIButton) {
        
        timer.invalidate()
        timer = Timer.scheduledTimer(withTimeInterval: 5, repeats: true) { [weak self] (timer) in
            
            guard let weakSelf = self else {
                return
            }
            
            let text = "現在時刻：" + Date().toString(format: "HH:mm")
            weakSelf.textView.text = text
            
            let myUtterance = AVSpeechUtterance(string: text)
            myUtterance.voice = AVSpeechSynthesisVoice(language: "zh-TW")
            myUtterance.rate = 0.5
            weakSelf.synth.speak(myUtterance)
        }
        
        timer.fire()
    }
    
    @IBAction func endHandler(_ sender: UIButton) {
        timer.invalidate()
        synth.stopSpeaking(at: .word)
    }
}

這是一個可以一直報時的簡易程式

參考資料：

https://code.tutsplus.com/tutorials/create-a-text-to-speech-app-with-swift--cms-22229