Android TTS onUtteranceCompleted回调未被调用

Question

我正在尝试让Android TTS API读取我的“话语”，然后调用onUtteranceCompleted()侦听器，但未成功。我已经注册了我的TTS对象，并且它返回了SUCCESS，所以我永远也搞不懂为什么我的回调没有被调用。

我试着寻找帮助，但似乎其他人也有困难。我错过了什么简单的东西吗？

感谢你能提供的任何帮助。

package com.test.mytts;

import java.util.HashMap;

import android.app.Activity;
import android.media.AudioManager;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.speech.tts.TextToSpeech.OnUtteranceCompletedListener;
import android.widget.TextView;
import android.widget.Toast;

public class MyTTS extends Activity implements OnInitListener, OnUtteranceCompletedListener
{   
    TextView tv;
    private TextToSpeech _tts;

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        tv = new TextView(this);

        tv.setText("MyTTS: ");

        super.onCreate(savedInstanceState);
        setContentView(tv);

        _tts = new TextToSpeech(this, this);
    }

    @Override
    public void onInit(int status) 
    {
        HashMap<String, String> myHashAlarm = new HashMap<String, String>();

        myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_STREAM, String.valueOf(AudioManager.STREAM_NOTIFICATION));
        myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, "test");

        if (status == TextToSpeech.SUCCESS)
        {
            Toast.makeText(this, "Trying to speak...", Toast.LENGTH_SHORT).show();

            int result = _tts.setOnUtteranceCompletedListener(this);

            tv.append(String.valueOf(result));

            _tts.setSpeechRate((float) .5);

            _tts.speak("Testing one, two, three", TextToSpeech.QUEUE_ADD, myHashAlarm);
        }
        else
            Toast.makeText(this, "Failed to initialize TTS.", Toast.LENGTH_SHORT).show();

    }

    @Override
    public void onUtteranceCompleted(String utteranceId) 
    {
        Toast.makeText(this, "onUtteranceCompleted", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onDestroy()
    {
        super.onDestroy();
        _tts.shutdown();
    }
}

Answer 1

在tts对象的onInit函数中调用setOnUtteranceCompletedListener。

如果要在调用onUtteranceCompleted函数时对UI进行任何更改，请在runOnUIThread方法中添加代码。

并且一定要记住在调用to ()函数时添加Hashmap param值

示例：

TextToSpeech tts= new TextToSpeech(context, new OnInitListener() {

 @Override
 public void onInit(int status) {

    mTts.setOnUtteranceCompletedListener(new OnUtteranceCompletedListener() {

        @Override
        public void onUtteranceCompleted(String utteranceId) {

            runOnUiThread(new Runnable() {

                @Override
                public void run() {
                //UI changes
                }
            });
        }
    });

 }
});


HashMap<String, String> params = new HashMap<String, String>();

params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,"stringId");

tts.speak("Text to Speak",TextToSpeech.QUEUE_FLUSH, params);

Answer 2

我认为除非您指定一个带有id的语句，例如：

map.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, utteranceid);

将不会调用您的话语完成方法。

在这种情况下，map是您在说话时传递给引擎的Hashmap。

Answer 3

这将适用于API级别的>=15。

import java.util.HashMap;
import java.util.Locale;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.speech.tts.UtteranceProgressListener;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity implements OnInitListener{

    private static final int CHECK_TTS_DATA = 0X123;
    protected static final String TAG = MainActivity.class.getSimpleName();
    private TextToSpeech textToSpeech;
    private Button buttonSayIt;
    private EditText editTextTts;
    String tts;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        buttonSayIt=(Button) findViewById(R.id.buttonSayIt);
        editTextTts=(EditText) findViewById(R.id.editTextTts);
        buttonSayIt.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                tts=editTextTts.getText().toString();
                Log.d(TAG, tts);
                speach(tts,"you_utterance_id");
            }
        });
        //check for TTs data
        Intent checkTtsDataIntent=new Intent();
        checkTtsDataIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
        startActivityForResult(checkTtsDataIntent, CHECK_TTS_DATA);

    }

    protected void speach(String tts,String utteranceId) {
        HashMap<String, String> params = new HashMap<String, String>();
        params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,utteranceId);
        textToSpeech.speak(tts,TextToSpeech.QUEUE_FLUSH,params);
    }

    @Override
    public void onInit(int status) {
        if(status==TextToSpeech.SUCCESS){
            if(textToSpeech.isLanguageAvailable(Locale.US)==TextToSpeech.LANG_AVAILABLE){
                textToSpeech.setLanguage(Locale.US);
            }
        }else if(status==TextToSpeech.ERROR){
            Toast.makeText(this, "Sorry Text To Speach faild", Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if(requestCode==CHECK_TTS_DATA){
            if(resultCode==TextToSpeech.Engine.CHECK_VOICE_DATA_PASS){
                textToSpeech=new TextToSpeech(this, this);      
                textToSpeech.setOnUtteranceProgressListener(utteranceProgressListener);
            }else{
                Intent installTtsIntent=new Intent();
                installTtsIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                startActivity(installTtsIntent);
            }
        }
    }

    UtteranceProgressListener utteranceProgressListener=new UtteranceProgressListener() {

        @Override
        public void onStart(String utteranceId) {
            Log.d(TAG, "onStart ( utteranceId :"+utteranceId+" ) ");
        }

        @Override
        public void onError(String utteranceId) {
            Log.d(TAG, "onError ( utteranceId :"+utteranceId+" ) ");
        }

        @Override
        public void onDone(String utteranceId) {
            Log.d(TAG, "onDone ( utteranceId :"+utteranceId+" ) ");
        }
    };

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}