如何使用按钮激活语音转文本

Question

我想实现一个按钮，当点击该按钮时，它将激活android的语音到文本转换器，就像android键盘提供的一样。具体来说，我想要一个按钮，让应用程序实时转录用户所说的内容，并逐字（实时）记录在editText框中。做这件事最好的方法是什么？

感谢

Answer 1

如果您还没有检查Api demos中的Voice Recognition样本，您应该继续检查它。它应该会让您领先一步。演示可在/android-sdk/samples/...文件夹中找到。如果你还没有安装它们，下面是如何将android api演示应用程序安装到我的手机中。

以下（任何其他）教程也将帮助您开始：

1） 安卓语音识别教程

2） 安卓系统：使用API 的语音转文本

以下可能也是一个不错的阅读：

将文本到语音和语音识别添加到您的Android应用程序并使用Android语音识别API。

希望这能有所帮助。

Answer 2

在应用程序中，使用ACTION_RECOGNIZE_SPEECH操作调用startActivityForResult()。这将启动语音识别活动，然后您可以在onActivityResult()中处理结果。

private static final int SPEECH_REQUEST_CODE = 0;
// Create an intent that can start the Speech Recognizer activity
private void displaySpeechRecognizer() {
    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
// Start the activity, the intent will be populated with the speech text
    startActivityForResult(intent, SPEECH_REQUEST_CODE);
}
// This callback is invoked when the Speech Recognizer returns.
// This is where you process the intent and extract the speech text from the intent.
@Override
protected void onActivityResult(int requestCode, int resultCode,
        Intent data) {
    if (requestCode == SPEECH_REQUEST_CODE && resultCode == RESULT_OK) {
        List<String> results = data.getStringArrayListExtra(
                RecognizerIntent.EXTRA_RESULTS);
        String spokenText = results.get(0);
        // Do something with spokenText
    }
    super.onActivityResult(requestCode, resultCode, data);
}

更多信息可以在参考中找到

Answer 3

private void startVoiceRecognitionActivity()
{
    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Voice recognition Demo...");
    startActivityForResult(intent, REQUEST_CODE);
}
/**
 * Handle the results from the voice recognition activity.
 */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK)
    {
        // Populate the wordsList with the String values the recognition engine thought it heard
        ArrayList<String> matches = data.getStringArrayListExtra(
                RecognizerIntent.EXTRA_RESULTS);
        myEditText.setText(matches.get(0));
    }
    super.onActivityResult(requestCode, resultCode, data);
}