0
我試圖使用iOS語音將文本API和文本一起使用到語音API。基本上用戶會說話，他們說的話將會在textview中被轉錄。然後用戶將按下一個按鈕，該按鈕將從文本視圖中的轉錄文本中提供文本到語音。我的錯誤是當用戶按下語音到文本按鈕時，文本到語音按鈕停止工作。但是，如果我沒有按語音到文本按鈕，並通過鍵盤在文本視圖中輸入一些文本，則文本到語音按鈕的作用。我猜這是與文字按鈕的演講有問題。我的代碼沒有出現任何錯誤，我對發生的事情感到困惑。文本到語音錯誤，與文本按鈕的語音衝突
import UIKit
import Speech
import AVFoundation
class SpeechRecognitionViewController: UIViewController, SFSpeechRecognizerDelegate, UIPickerViewDataSource, UIPickerViewDelegate {
private var speechRecognizer: SFSpeechRecognizer!
private var recognitionRequest: SFSpeechAudioBufferRecognitionRequest!
private var recognitionTask: SFSpeechRecognitionTask!
private let audioEngine = AVAudioEngine()
private var locales: [Locale]!
private let defaultLocale = Locale(identifier: "en-US")
@IBOutlet weak var recordBtn: UIButton!
@IBOutlet weak var speaker: UIButton!
@IBOutlet weak var textView: UITextField!
//@IBOutlet weak var textView: UITextView!
//@IBOutlet private weak var recordBtn : UIButton!
//@IBOutlet private weak var picker: UIPickerView!
@IBOutlet weak var picker: UIPickerView!
override func viewDidLoad() {
super.viewDidLoad()
recordBtn.isEnabled = false
locales = SFSpeechRecognizer.supportedLocales().map({$0})
let index = NSArray(array: locales).index(of: defaultLocale)
picker.selectRow(index, inComponent: 0, animated: false)
prepareRecognizer(locale: defaultLocale)
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
SFSpeechRecognizer.requestAuthorization { authStatus in
/*
The callback may not be called on the main thread. Add an
operation to the main queue to update the record button's state.
*/
OperationQueue.main.addOperation {
switch authStatus {
case .authorized:
self.recordBtn.isEnabled = true
case .denied:
self.recordBtn.isEnabled = false
self.recordBtn.setTitle("User denied access to speech recognition", for: .disabled)
case .restricted:
self.recordBtn.isEnabled = false
self.recordBtn.setTitle("Speech recognition restricted on this device", for: .disabled)
case .notDetermined:
self.recordBtn.isEnabled = false
self.recordBtn.setTitle("Speech recognition not yet authorized", for: .disabled)
}
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
private func prepareRecognizer(locale: Locale) {
speechRecognizer = SFSpeechRecognizer(locale: locale)!
speechRecognizer.delegate = self
}
private func startRecording() throws {
// Cancel the previous task if it's running.
if let recognitionTask = recognitionTask {
recognitionTask.cancel()
self.recognitionTask = nil
}
let audioSession = AVAudioSession.sharedInstance()
try audioSession.setCategory(AVAudioSessionCategoryRecord)
try audioSession.setMode(AVAudioSessionModeMeasurement)
try audioSession.setActive(true, with: .notifyOthersOnDeactivation)
recognitionRequest = SFSpeechAudioBufferRecognitionRequest()
guard let inputNode = audioEngine.inputNode else { fatalError("Audio engine has no input node") }
guard let recognitionRequest = recognitionRequest else { fatalError("Unable to created a SFSpeechAudioBufferRecognitionRequest object") }
// Configure request so that results are returned before audio recording is finished
recognitionRequest.shouldReportPartialResults = true
// A recognition task represents a speech recognition session.
// We keep a reference to the task so that it can be cancelled.
recognitionTask = speechRecognizer.recognitionTask(with: recognitionRequest) { result, error in
var isFinal = false
if let result = result {
self.textView.text = result.bestTranscription.formattedString
isFinal = result.isFinal
}
if error != nil || isFinal {
self.audioEngine.stop()
inputNode.removeTap(onBus: 0)
self.recognitionRequest = nil
self.recognitionTask = nil
self.recordBtn.isEnabled = true
self.recordBtn.setTitle("Start Recording", for: [])
}
}
let recordingFormat = inputNode.outputFormat(forBus: 0)
inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer: AVAudioPCMBuffer, when: AVAudioTime) in
self.recognitionRequest?.append(buffer)
}
audioEngine.prepare()
try audioEngine.start()
textView.text = "(listening...)"
}
// =========================================================================
// MARK: - UIPickerViewDataSource
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return locales.count
}
// =========================================================================
// MARK: - UIPickerViewDelegate
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return locales[row].identifier
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
let locale = locales[row]
prepareRecognizer(locale: locale)
}
// =========================================================================
// MARK: - SFSpeechRecognizerDelegate
public func speechRecognizer(_ speechRecognizer: SFSpeechRecognizer, availabilityDidChange available: Bool) {
if available {
recordBtn.isEnabled = true
recordBtn.setTitle("Start Recording", for: [])
} else {
recordBtn.isEnabled = false
recordBtn.setTitle("Recognition not available", for: .disabled)
}
}
// =========================================================================
// MARK: - Actions
@IBAction func recordbuttontapped(_ sender: Any) {
if audioEngine.isRunning {
audioEngine.stop()
recognitionRequest?.endAudio()
recordBtn.isEnabled = false
recordBtn.setTitle("Stopping", for: .disabled)
} else {
try! startRecording()
recordBtn.setTitle("Stop recording", for: [])
}
}
@IBAction func speaktome(_ sender: Any) {
let something = textView.text!
let utterance = AVSpeechUtterance(string: something)
utterance.voice = AVSpeechSynthesisVoice(language: "en-US")
let synthesizer = AVSpeechSynthesizer()
synthesizer.speak(utterance)
}
}
嗨，謝謝你的回覆，請你給我舉一個例子，說明如何用提供的代碼來做到這一點，或者你可以指示我進一步說明。將不勝感激。謝謝 – aneey123