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我正在構建一個使用語音命令來執行某些功能的應用程序。我從here用「Ok Google」這樣的詞組開始語音識別？
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);
}
一些代碼工作。然而，這種方法需要通過點擊一個按鈕來激活。有沒有辦法通過語音命令啓動語音識別器？像Google Now一樣，您可以只說「Ok Google」，那麼它將打開語音識別器活動並偵聽命令？
謝謝。