TTS(Text To Speech) 사용하기

음... 반복이의 단어들을 자동으로 읽어주기 위해서 TTS 기능을 추가했다.
약간의 에러가 있어서 해매기는 했지만 지금은 잘 작동이 된다. (음... ㅋㅋ)

TTS 사용을 위한 Sample 코드와 에러를 해결했던 나의 Know-how를 적어 본다.

1. Sample Code (http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/app/TextToSpeechActivity.html)

 /*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.example.android.apis.app;

import android.app.Activity;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.example.android.apis.R;

import java.util.Locale;
import java.util.Random;

public class TextToSpeechActivity extends Activity implements TextToSpeech.OnInitListener {

   private static final String TAG = "TextToSpeechDemo";

   private TextToSpeech mTts;
   private Button mAgainButton;

   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.text_to_speech);

       // Initialize text-to-speech. This is an asynchronous operation.
       // The OnInitListener (second argument) is called after initialization completes.
       mTts = new TextToSpeech(this,
           this  // TextToSpeech.OnInitListener
           );

       // The button is disabled in the layout.
       // It will be enabled upon initialization of the TTS engine.
       mAgainButton = (Button) findViewById(R.id.again_button);

       mAgainButton.setOnClickListener(new View.OnClickListener() {
           public void onClick(View v) {
               sayHello();
           }
       });
   }

   @Override
   public void onDestroy() {
       // Don't forget to shutdown!
       if (mTts != null) {
           mTts.stop();
           mTts.shutdown();
       }

       super.onDestroy();
   }

   // Implements TextToSpeech.OnInitListener.
   public void onInit(int status) {
       // status can be either TextToSpeech.SUCCESS or TextToSpeech.ERROR.
       if (status == TextToSpeech.SUCCESS) {
           // Set preferred language to US english.
           // Note that a language may not be available, and the result will indicate this.
           int result = mTts.setLanguage(Locale.US);
           // Try this someday for some interesting results.
           // int result mTts.setLanguage(Locale.FRANCE);
           if (result == TextToSpeech.LANG_MISSING_DATA ||
               result == TextToSpeech.LANG_NOT_SUPPORTED) {
              // Lanuage data is missing or the language is not supported.
               Log.e(TAG, "Language is not available.");
           } else {
               // Check the documentation for other possible result codes.
               // For example, the language may be available for the locale,
               // but not for the specified country and variant.

               // The TTS engine has been successfully initialized.
               // Allow the user to press the button for the app to speak again.
               mAgainButton.setEnabled(true);
               // Greet the user.
               sayHello();
           }
       } else {
           // Initialization failed.
           Log.e(TAG, "Could not initialize TextToSpeech.");
       }
   }

   private static final Random RANDOM = new Random();
   private static final String[] HELLOS = {
     "Hello",
     "Salutations",
     "Greetings",
     "Howdy",
     "What's crack-a-lackin?",
     "That explains the stench!"
   };

   private void sayHello() {
       // Select a random hello.
       int helloLength = HELLOS.length;
       String hello = HELLOS[RANDOM.nextInt(helloLength)];
       mTts.speak(hello,
           TextToSpeech.QUEUE_FLUSH,  // Drop all pending entries in the playback queue.
           null);
   }

}

2. 에러 처리
에러는 "Language is not supported." 이다.
내가 사용하는 폰의 언어 설정은 한국어로 되어 있다.
당연히 지역도 한국으로 되어 있을 것이다.
하지만 Locale.US를 사용하면 지역과 언어가 en_US 가 된다.
따라서 폰의 언어 설정을 영어로 변경하여야 아무런 에러 없이 실행이 된다.
그럼 한국어 설정에서 영어 설정을 사용하려면????
바로 Locale.US => Locale.ENGLISH로 수정하면 된다.
그러면 한국어 설정에서도 TTS에 영어를 적용할 수 있다.

그럼 여기까지 TTS 활용 방법이였다.

모두들 즐거운 하루되세요.