讓開不了口的 App 開口說話 !

利用 AVSpeechSynthesizer 講話

import UIKit
import AVFAudio

class ViewController: UIViewController {
    
    let synthesizer = AVSpeechSynthesizer()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }
    
    @IBAction func speak(_ sender: Any) {
        let utterance =  AVSpeechUtterance(string: "I love swift")
        utterance.pitchMultiplier = 2
        utterance.rate = 0.1
        synthesizer.speak(utterance)
    }
}

AVSpeechUtterance 是要講的話，AVSpeechSynthesizer 是發出聲音的合成器。呼叫 AVSpeechSynthesizer 的 speak function 講話，pitchMultiplier 控制講話的音調，範圍是 0.5 ~ 2，rate 控制講話的速度，範圍是 0 ~ 1。

說中文

import UIKit
import AVFAudio

class ViewController: UIViewController {
    
    let synthesizer = AVSpeechSynthesizer()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }
    
    @IBAction func speak(_ sender: Any) {
        let utterance =  AVSpeechUtterance(string: "我愛彼得潘")
        utterance.voice = AVSpeechSynthesisVoice(language: "zh-TW")
        synthesizer.speak(utterance)
    }
}

AVSpeechSynthesisVoice 控制講話聲音的語言，設定 voice 才能講英文以外的語言。

語言字串列表可參考以下連結。