Android TextTospeech:说话失败:不绑定到TTS引擎

Question

我的textTospeech在第一次运行中正常工作，但是在应用程序使用" Back"键关闭并重新打开时，它在应用程序后不起作用。该错误是TextToSpeech: speak failed: not bound to TTS engine和onInit中的status是ERROR

我有一个可以处理TTS的课程：

public class VoiceGenerator {
    public TextToSpeech tts;
    private Context context;
    private String TAG = "Voice Generator";
    private static VoiceGenerator instance;
    private VoiceGenerator(Context context){
        this.context = context;
    }
    public static VoiceGenerator getInstance(Context context){
        if (instance == null) {
            instance = new VoiceGenerator(context);
        }
        return instance;
    }
    public void initializeTTS() {
        if (tts == null) {
            Log.d(TAG, "initialize tts");
            tts = new TextToSpeech(context, new TextToSpeech.OnInitListener() {
                @Override
                public void onInit(int status) {
                    if (status != TextToSpeech.ERROR) {
                        Log.d(TAG, "initialize tts success");
                        tts.setLanguage(...);                           
                    }      
                }
            });    
        }
    }
    public void speak(){
        tts.speak(...)
    }
    public void shutdown(){
        if(tts != null) {   
            tts.stop();
            tts.shutdown();
            tts=null;
            Log.d(TAG, "TTS Destroyed");
        }
    }
}

我在ongreate中获得了语音加工的实例：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);   
    voiceGenerator = VoiceGenerator.getInstance(this);
}

onstart中的tts初始化：

@Override
protected void onStart(){
    super.onStart();
    voiceGenerator.initializeTTS();
}

并将其关闭在ondestroy中：

@Override
protected void onDestroy() {
super.onDestroy();
voiceGenerator.shutdown();    
}

关于我做错了什么的想法？

Answer 1

您需要在MainActivity上实现TextToSpeech.OnInitListener。这是一个很好的例子。

代码：

public class MainActivity extends ActionBarActivity  implements TextToSpeech.OnInitListener{
    private TextToSpeech engine;
    private EditText text;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        text = (EditText) findViewById(R.id.text);
        engine = new TextToSpeech(this, this);
    }

    public void speakText(View v) {
        String textContents = text.getText().toString();
        engine.speak(textContents, TextToSpeech.QUEUE_FLUSH, null, null);
    }
    @Override
    public void onInit(int i) {

        if (i == TextToSpeech.SUCCESS) {
            //Setting speech Language
            engine.setLanguage(Locale.ENGLISH);
            engine.setPitch(1);
        }
    }
}

Answer 2

使用onResume

@Override
protected void onResume() {
super.onResume();
myTTS = new TextToSpeech(this, this);
     }
}

Answer 3

简单解决方案，并非所有设备都支持TextTospeach，请尝试使用不同的设备，

Answer 4

您只能让引擎说话，在完成OnInit之后，请在OnInit（）中关注：

：

   if (status == TextToSpeech.SUCCESS) {
     tts.speak("Hello World", TextToSpeech.QUEUE_FLUSH, null);      
   }