目前我正在进行一个项目，需要使用Google Cloud Speech API和TextToSpeech。我尝试使用RecognizerIntent进行了一些操作，但我想尝试使用Cloud Speech API。
如果有教程材料或指南会非常有帮助，我已经查看了示例应用，但我在寻找教程、指南或任何能解释相关内容的东西。
这是我使用TTS和RecognizerIntent的解决方案。
private TextToSpeech tts;private TextToSpeech secondTTS;private TextView speechInputTextView,correctAnswerTextView,wrongAnswerTextView,currentQuestionTextView;private ArrayList<String> correctAnswersArrayList, questionArrayList, sayCorrectArrayList, sayWrongArrayList ,toSay ,toASk;private MediaPlayer mediaPlayer;private DBHelper dbHelper;private SQLiteDatabase sqlDB;private int correctACount,wrongACount,currentQuestion, Unit;private boolean isStarted;private String currentLanguage ;private static int TOTAL_QUESITONS;private final static int REQ_CODE_SPEECH_INPUT = 100;private final static String PAUSE_COMMAND = "pos";private final static String STOP_COMMAND = "stop";private final static String RESTART_COMMNAD = "restart";private final static String REPEAT_COMMAND = "repeat";private final static String EXIT_COMMAND = "exit";@Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_unit); isStarted = true; mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.unitonemp3); currentQuestion = 0; speechInputTextView = (TextView) findViewById(R.id.speechInput); correctAnswerTextView = (TextView) findViewById(R.id.correctAnswers_TextView); currentQuestionTextView = (TextView) findViewById(R.id.currentQuestion_TextView); wrongAnswerTextView = (TextView) findViewById(R.id.wrongAnswer_TextView); Unit = 1; currentLanguage = getIntent().getBundleExtra("resultBundle").getString("language"); Button next = (Button) findViewById(R.id.nextButton); Button changeUnitButton = (Button) findViewById(R.id.changeUnitButton); Button playButton = (Button) findViewById(R.id.playButton); Button pauseButton = (Button) findViewById(R.id.pauseButton); playButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { startSayWithID(questionArrayList.get(currentQuestion), 1000, "say"); } }); pauseButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { tts.stop(); secondTTS.stop(); Intent pauseI = new Intent(UnitActivity.this, PauseActivity.class); Bundle resultBundle = new Bundle(); resultBundle.putInt("npc", currentQuestion); pauseI.putExtra("resultBundle", resultBundle); startActivity(pauseI); } }); tts = new TextToSpeech(this, this); secondTTS = new TextToSpeech(this, this); changeUnitButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { secondTTS.stop(); tts.stop(); Unit ++; mediaPlayer.start(); } }); Bundle extras = getIntent().getExtras(); if (extras != null) { currentQuestion = getIntent().getBundleExtra("resultBundle").getInt("npc"); } ImageView micButton = (ImageView) findViewById(R.id.micButton); micButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (!tts.isSpeaking()) { currentQuestion = 13; startSayWithID(questionArrayList.get(currentQuestion), 1000, "questionID"); } } }); String[] sayCorrectList = getResources().getStringArray(R.array.sayCorrect); String[] sayWrongList = getResources().getStringArray(R.array.satWrong); String[] listToSay = getResources().getStringArray(R.array.toSay); String[] listToAsk = getResources().getStringArray(R.array.toAsk); toSay = new ArrayList<>(Arrays.asList(listToSay)); toASk = new ArrayList<>(Arrays.asList(listToAsk)); questionArrayList = new ArrayList<>(); correctAnswersArrayList = new ArrayList<>(); addGerCorrect(); addEngQuestions(); sayCorrectArrayList = new ArrayList<>(Arrays.asList(sayCorrectList)); sayWrongArrayList = new ArrayList<>(Arrays.asList(sayWrongList)); TOTAL_QUESITONS = questionArrayList.size(); mediaPlayer.start(); mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { startSayWithID("Welcome",1000,"instruction"); } }); next.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { for(int i = 0 ; i< questionArrayList.size();i++){ Log.d(" question List "," item :"+"pisition "+i+ "" +questionArrayList.get(i)); } currentQuestion++; tts.stop(); secondTTS.stop(); startSayWithID("",1000,"instruction"); } }); tts.setOnUtteranceProgressListener(new UtteranceProgressListener() { @Override public void onStart(String utteranceId) { } @Override public void onDone(final String utteranceId) { runOnUiThread(new Runnable() { @Override public void run() { if (utteranceId.contains("say")) { if (correctAnswersArrayList.get(currentQuestion).contains("tensa23")) { startSayWithID(questionArrayList.get(currentQuestion), 1000, "say"); currentQuestion++; Log.d("Current ", "current Question" + currentQuestion + "" + correctAnswersArrayList.get(currentQuestion)); }else startSayWithID(questionArrayList.get(currentQuestion), 1000, "question"); } if (utteranceId.contains("instruction")) { if (correctAnswersArrayList.get(currentQuestion).contains("tensa23")) { startSayWithID(questionArrayList.get(currentQuestion), 1000, "say"); currentQuestion++; Log.d("Current ","current Question"+currentQuestion +""+correctAnswersArrayList.get(currentQuestion)); } else if (questionArrayList.get(currentQuestion).contains("?")) { startSayWithID(toASk.get(new Random().nextInt(toASk.size())), 1000, "say"); } else { startSayWithID(toSay.get(new Random().nextInt(toSay.size())), 1000, "say"); } } if (utteranceId.contains("question")) { if(questionArrayList.get(currentQuestion).contains("?")){ startSayWithID("in Spanish you ask",1000,"german"); }else{ startSayWithID("In Spanish you say",1000,"german"); } } if (utteranceId.contains("german")) { secondTTS.speak(correctAnswersArrayList.get(currentQuestion),TextToSpeech.QUEUE_FLUSH,null,"ask"); } if(utteranceId.contains("ask")){ startAsk(1000); } } }); } @Override public void onError(String utteranceId) { } }); secondTTS.setOnUtteranceProgressListener(new UtteranceProgressListener() { @Override public void onStart(String utteranceId) { } @Override public void onDone(final String utteranceId) { runOnUiThread(new Runnable() { @Override public void run() { if(utteranceId.contains("ask")){ startAsk(1000); } } }); } @Override public void onError(String utteranceId) { } }); // end of MainActivity}private void promptSpeechInput() { Intent prompIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); prompIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "es-ES"); prompIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "How do you say \n" +questionArrayList.get(currentQuestion)); try { startActivityForResult(prompIntent, REQ_CODE_SPEECH_INPUT); } catch (ActivityNotFoundException a) { makeText(getApplicationContext(), "speech not supported", Toast.LENGTH_SHORT).show(); }}@Overridepublic void onInit(int status) { if (status == TextToSpeech.SUCCESS) { tts.setLanguage(Locale.US); switch (currentLanguage){ case "Spanish" : secondTTS.setLanguage(new Locale("es","Es")); break; case "Italian" : secondTTS.setLanguage(Locale.ITALY); break; case "German" : secondTTS.setLanguage(Locale.GERMAN); break; case "French" : secondTTS.setLanguage(Locale.FRENCH); break; } }}protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { case REQ_CODE_SPEECH_INPUT: { if (resultCode == RESULT_OK && null != data) { ArrayList<String> result = data .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS); speechInputTextView.setText(result.get(0)); } } String inputSpeechToString = speechInputTextView.getText().toString().toLowerCase(); if (currentQuestion < TOTAL_QUESITONS && inputSpeechToString.contains(correctAnswersArrayList.get(currentQuestion))) { currentQuestion++; correctACount++; correctAnswerTextView.setText(String.valueOf(correctACount)); currentQuestionTextView.setText(String.valueOf(currentQuestion)); Log.d("Onactivity ", "CurrentQ = " + currentQuestion); startSayWithID(sayCorrectArrayList.get(new Random().nextInt(sayCorrectArrayList.size())), 1000, "instruction"); } else if (inputSpeechToString.contains(STOP_COMMAND)) { Intent stopIntent = new Intent(UnitActivity.this, PauseActivity.class); Bundle resultBundle = new Bundle(); resultBundle.putBoolean("isStarted", isStarted); stopIntent.putExtra("resultBundle", resultBundle); startActivity(stopIntent); } else if (inputSpeechToString.contains(PAUSE_COMMAND)) { Intent pauseI = new Intent(UnitActivity.this, PauseActivity.class); Bundle resultBundle = new Bundle(); resultBundle.putInt("npc", currentQuestion); pauseI.putExtra("resultBundle", resultBundle); startActivity(pauseI); } else if (inputSpeechToString.contains(RESTART_COMMNAD)) { currentQuestion = 0; startSayWithID("Restarted", 1000, "say"); } else if (inputSpeechToString.contains(REPEAT_COMMAND)) { startSayWithID(questionArrayList.get(currentQuestion), 1000, "question"); } else if (inputSpeechToString.contains(EXIT_COMMAND)) { Intent homeIntent = new Intent(Intent.ACTION_MAIN); homeIntent.addCategory(Intent.CATEGORY_HOME); homeIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(homeIntent); } else { startSayWithID(sayWrongArrayList.get(new Random().nextInt(sayWrongArrayList.size())), 1000, "instruction"); wrongACount++; wrongAnswerTextView.setText(String.valueOf(wrongACount)); Log.d("Onactivity ", "CORRECT = " + correctAnswersArrayList.get(currentQuestion)); Log.d("Onactivity ", "You said : " + inputSpeechToString); } }}回答：
在安卓上设置Google Speech云服务并不是一个简单的1、2、3步骤的过程，但我会给你一些指导。
- 从这里下载示例项目，使用语音示例。https://github.com/GoogleCloudPlatform/android-docs-samples/tree/master/speech/Speech
- 设置一个Google云项目，启用语音API，并将其链接到你的Gmail账户的计费（你每个月可以免费获得60分钟的语音识别）。
- 生成一个认证JSON文件，并将其放入示例项目的“raw”文件夹中。
- 在你的电脑上设置Google云服务并获取一个访问令牌。将该访问令牌插入到你的SpeechService.java类中。
*关于步骤3和4的文档：https://cloud.google.com/speech/docs/getting-started
*如果你在尝试将示例项目复制到你自己的项目时遇到问题，请查看这个：在安卓中无法导入com.google.cloud.speech.v1.SpeechGrpc
具体步骤太长了，无法一一列出，我甚至都记不全，如果你遇到具体问题，请告诉我。
