如何检测语音到文本是否在Android上可用? [英] How to detect if speech to text is available on android?
问题描述
我相信我已经弄清楚了如何检测android设备是否具有麦克风,例如:
I believe I have figured out how to detect if an android device has a microphone, like so:
Intent speechIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
List<ResolveInfo> speechActivities = packageManager.queryIntentActivities(speechIntent, 0);
TextView micAvailView = (TextView) findViewById(R.id.mic_available_flag);
if (speechActivities.size() != 0) { //we have a microphone
}
else { //we do not have a microphones
}
但是,如何检测android设备是否具有语音转文本功能?还是应该使用上述方法来检测?如果是这样,如何检测设备是否有麦克风?
However, how does one detect whether the android device has speech-to-text capability? Or should the above be used to detect that? If so, how does one detect if the device has a microphone?
感谢您提供任何反馈意见.
Any feedback is appreciated, thanks.
推荐答案
您随附的代码确实用于检测音频识别是否可用[1]:
The code you attached is indeed used to detect if audio recognition is available [1]:
// Check to see if a recognition activity is present
PackageManager pm = getPackageManager();
List activities = pm.queryIntentActivities(
new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
if (activities.size() != 0) {
speakButton.setOnClickListener(this);
} else {
speakButton.setEnabled(false);
speakButton.setText("Recognizer not present");
}
要测试是否存在麦克风,只需遵循[2]中的代码和[3]中的文档,在调用prepare()时,如果麦克风不可用,则应获得IOException:
To test if a mic is present, just follow the code in [2] and the docs at [3], when calling prepare() you should get an IOException if the mic is not available:
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(path);
recorder.prepare();
[1] http://developer.android.com/resources/articles /speech-input.html
[2] http://developer.android.com/guide/topics/media/index.html#capture
[3] http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html
[1] http://developer.android.com/resources/articles/speech-input.html
[2] http://developer.android.com/guide/topics/media/index.html#capture
[3] http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html
这篇关于如何检测语音到文本是否在Android上可用?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!