STT 과제 - 안드로이드 google STT API 활용

1. AndroidManifest.xml 파일에 인터넷과 오디오 접근 허용을 위한 문장을 추가한다.

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

 

2. activity_main.xml 파일에 Textview 와 Button 을 하나씩 추가한다.

Textview : stt 결과를 출력하기 위함

Button : stt 명령을 시작하기 위함

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/sttResult"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="STT 결과"
        android:textSize="30sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.405" />

    <Button
        android:id="@+id/sttStart"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="154dp"
        android:layout_marginTop="62dp"
        android:text="STT Button"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/sttResult" />


</androidx.constraintlayout.widget.ConstraintLayout>

 

3. MainActivity.java 파일에 STT 기능을 추가한다.

package com.example.testapp;

import android.Manifest;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    Intent intent;
    SpeechRecognizer mRecognizer;
    Button sttBtn;
    TextView textView;
    final int PERMISSION = 1;

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

        if ( Build.VERSION.SDK_INT >= 23 ){
            // 퍼미션 체크
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.INTERNET,
                    Manifest.permission.RECORD_AUDIO},PERMISSION);
        }

        textView = findViewById(R.id.sttResult);
        sttBtn = findViewById(R.id.sttStart);

        intent=new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,getPackageName());
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE,"ko-KR");
        sttBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mRecognizer=SpeechRecognizer.createSpeechRecognizer(MainActivity.this);
                mRecognizer.setRecognitionListener(listener);
                mRecognizer.startListening(intent);
            }
        });
    }

    private RecognitionListener listener = new RecognitionListener() {
        @Override
        public void onReadyForSpeech(Bundle params) {
            Toast.makeText(getApplicationContext(),"음성인식을 시작합니다.",Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onBeginningOfSpeech() {}

        @Override
        public void onRmsChanged(float rmsdB) {}

        @Override
        public void onBufferReceived(byte[] buffer) {}

        @Override
        public void onEndOfSpeech() {}

        @Override
        public void onError(int error) {
            String message;

            switch (error) {
                case SpeechRecognizer.ERROR_AUDIO:
                    message = "오디오 에러";
                    break;
                case SpeechRecognizer.ERROR_CLIENT:
                    message = "클라이언트 에러";
                    break;
                case SpeechRecognizer.ERROR_INSUFFICIENT_PERMISSIONS:
                    message = "퍼미션 없음";
                    break;
                case SpeechRecognizer.ERROR_NETWORK:
                    message = "네트워크 에러";
                    break;
                case SpeechRecognizer.ERROR_NETWORK_TIMEOUT:
                    message = "네트웍 타임아웃";
                    break;
                case SpeechRecognizer.ERROR_NO_MATCH:
                    message = "찾을 수 없음";
                    break;
                case SpeechRecognizer.ERROR_RECOGNIZER_BUSY:
                    message = "RECOGNIZER가 바쁨";
                    break;
                case SpeechRecognizer.ERROR_SERVER:
                    message = "서버가 이상함";
                    break;
                case SpeechRecognizer.ERROR_SPEECH_TIMEOUT:
                    message = "말하는 시간초과";
                    break;
                default:
                    message = "알 수 없는 오류임";
                    break;
            }

            Toast.makeText(getApplicationContext(), "에러가 발생하였습니다. : " + message,Toast.LENGTH_SHORT).show();
        }

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

            for(int i = 0; i < matches.size() ; i++){
                textView.setText(matches.get(i));
            }
        }

        @Override
        public void onPartialResults(Bundle partialResults) {}

        @Override
        public void onEvent(int eventType, Bundle params) {}
    };
}

 

4. 결과 

 

 

 

 

https://medium.com/wasd/creating-an-android-google-stt-application-4cea24ee97af

 

Creating an Android Google STT application

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