Android识别中的请求码是什么API

Question

            Intent recIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
            recIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                    RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
            recIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.ENGLISH);
            recIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Need to speak");
            try {
                startActivityForResult(intentRec, REQ_CODE);
            } catch (ActivityNotFoundException a) {
                Toast t = Toast.makeText(getApplicationContext(),
                        "Opps! Your device doesn't support Speech to Text",
                        Toast.LENGTH_SHORT);
                t.show();
            }

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch(resultCode) {
        case REQ_CODE:
            if (resultCode == RESULT_OK && null != data) {
                ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
                Toast.makeText(getApplicationContext(), String.valueOf(data.hasExtra(RecognizerIntent.EXTRA_RESULTS)), Toast.LENGTH_SHORT);
            }
        break;
    }
}

我一直在学习识别教程API，但我仍然不明白请求代码是什么以及为什么代码不再有效，它没有显示任何错误甚至没有响应我的行为是假的那么我该如何使用请求代码呢？代码没有显示任何输出。

Answer 1

您需要对语音到文本进行初始设置，并且每当您尝试说话时都需要调用 speak 方法。按照以下代码：

    private var mTextToSpeechListener: TextToSpeech? = null
    val REQUEST_CODE_SPEECH_INPUT = 5003

 /**
 * Showing google speech input dialog
 */
private fun speechToTextOutput() {
    val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
    intent.putExtra(
        RecognizerIntent.EXTRA_LANGUAGE_MODEL,
        RecognizerIntent.LANGUAGE_MODEL_FREE_FORM
    )
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault())
    intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Say something")
    try {
        startActivityForResult(intent, REQUEST_CODE_SPEECH_INPUT)
    } catch (exp: ActivityNotFoundException) {
        Lg.d(TAG, "speechToTextOutput: $exp")
    }

}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if (resultCode == Activity.RESULT_OK) {
        when (requestCode) {
            REQUEST_CODE_SPEECH_INPUT -> {
                val resultSpeech = data!!
                    .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)
                if (resultSpeech != null && resultSpeech.size > 0) {
                    mBinding.txtSpeechToText.text = resultSpeech.get(0)
                }
            }
        }
    }
}

Android识别中的请求码是什么API

What is the request code in Android recognition API

java

android

voice