안드로이드 구글 음성API[SpeechRecognizer tutorial]

구글 음성 API 흔히 적혀있는 SPEECH TO TEXT에 대한 Tutorial 파일입니다.

Gradle에 다른 특별한 셋팅은 없네요. 필요한 권한은 인터넷과 오디오 부분입니다.

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

Intent 데이터중에 RecognizerIntent가 있는데 그 데이터들을 셋팅하여 startActivityResult를 사용하여 구글 음성API를 사용하시고 onActivityResult로 데이터를 받아 사용하시면 되겠습니다.

public class GoogleActivity extends Activity implements RecognitionListener{

    private SpeechRecognizer speech;

    private Intent recognizerIntent;
    private final int RESULT_SPEECH = 1000;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_google);

        speech = SpeechRecognizer.createSpeechRecognizer(this);
        speech.setRecognitionListener(this);

        findViewById(R.id.btn_start).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                recognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
                recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, "ko-KR"); //언어지정입니다.
                recognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getPackageName());
                recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
                recognizerIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 5);   //검색을 말한 결과를 보여주는 갯수
                startActivityForResult(recognizerIntent, RESULT_SPEECH);
            }
        });
    }


    @Override
    public void onEndOfSpeech() {

    }

    @Override
    public void onReadyForSpeech(Bundle bundle) {

    }

    @Override
    public void onResults(Bundle results) {
        ArrayList<String> matches = results
                .getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);

        for(int i = 0; i < matches.size() ; i++){
            Log.e("GoogleActivity", "onResults text : " + matches.get(i));
        }

    }

    @Override
    public void onError(int errorCode) {

        String message;

        switch (errorCode) {

            case SpeechRecognizer.ERROR_AUDIO:
                message = "오디오 에러";
                break;

            case SpeechRecognizer.ERROR_CLIENT:
                message = "클라이언트 에러";
                break;

            case SpeechRecognizer.ERROR_INSUFFICIENT_PERMISSIONS:
                message = "퍼미션없음";
                break;

            case SpeechRecognizer.ERROR_NETWORK:
                message = "네트워크 에러";
                break;

            case SpeechRecognizer.ERROR_NETWORK_TIMEOUT:
                message = "네트웍 타임아웃";
                break;

            case SpeechRecognizer.ERROR_NO_MATCH:
                message = "찾을수 없음";;
                break;

            case SpeechRecognizer.ERROR_RECOGNIZER_BUSY:
                message = "바쁘대";
                break;

            case SpeechRecognizer.ERROR_SERVER:
                message = "서버이상";;
                break;

            case SpeechRecognizer.ERROR_SPEECH_TIMEOUT:
                message = "말하는 시간초과";
                break;

            default:
                message = "알수없음";
                break;
        }

        Log.e("GoogleActivity", "SPEECH ERROR : " + message);
    }

    @Override
    public void onRmsChanged(float v) {

    }

    @Override
    public void onBeginningOfSpeech() {

    }

    @Override
    public void onEvent(int i, Bundle bundle) {

    }

    @Override
    public void onPartialResults(Bundle bundle) {

    }

    @Override
    public void onBufferReceived(byte[] bytes) {

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        switch (requestCode) {
            case RESULT_SPEECH : {
                if (resultCode == RESULT_OK && null != data) {
                    ArrayList<String> text = data
                            .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

                    for(int i = 0; i < text.size() ; i++){
                        Log.e("GoogleActivity", "onActivityResult text : " + text.get(i));
                    }
                }

                break;
            }
        }
    }
}