如何使用Swift以编程方式打开iPhone上的发言屏幕？

import Speech

SFSpeechRecognizer.requestAuthorization { (authStatus) in
    if authStatus == .authorized {
        // 用户已授权，可以进行语音识别
    }
}

let speechRecognizer = SFSpeechRecognizer(locale: Locale(identifier: "zh-CN"))

let recognitionRequest = SFSpeechAudioBufferRecognitionRequest()

let audioEngine = AVAudioEngine()
let inputNode = audioEngine.inputNode
let recordingFormat = inputNode.outputFormat(forBus: 0)

inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer, time) in
    recognitionRequest.append(buffer)
}

audioEngine.prepare()
try audioEngine.start()

let recognitionTask = speechRecognizer?.recognitionTask(with: recognitionRequest, resultHandler: { (result, error) in
    if let result = result {
        // 处理语音识别结果
        let transcription = result.bestTranscription.formattedString
        print(transcription)
    } else if let error = error {
        // 处理错误
        print(error.localizedDescription)
    }
})

audioEngine.stop()
inputNode.removeTap(onBus: 0)
recognitionRequest.endAudio()
recognitionTask?.cancel()