Styjun

Hello I'm trying to make TextToSpeech work through Accessibility Stream added in API 26.
I've tried to use the bundle parameters as stated in docs but the code crashes the TTS Engine.

Here's the code:

Bundle mParamsBundle = new Bundle();
if (Build.VERSION.SDK_INT >= 26) 
 mParamsBundle.putString(TextToSpeech.Engine.KEY_PARAM_STREAM,
 String.valueOf(AudioManager.STREAM_ACCESSIBILITY));


mTextToSpeech.speak(sentence,
 modeAddToQueue ? TextToSpeech.QUEUE_ADD : TextToSpeech.QUEUE_FLUSH,
 mParamsBundle, null);

TTS always crash an this log shows:

I/TextToSpeech: Asked to disconnect from ComponentInfocom.google.android.tts/com.google.android.tts.service.GoogleTTSService

I/TextToSpeech: Connected to ComponentInfocom.google.android.tts/com.google.android.tts.service.GoogleTTSService

I/TextToSpeech: Set up connection to ComponentInfocom.google.android.tts/com.google.android.tts.service.GoogleTTSService

What am i doing wrong here? Help would be appreciated

Full Code:

import android.content.Context;
import android.media.AudioManager;
import android.os.Build;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;

import java.util.Locale;

public class TextToSpeechHelper implements TextToSpeech.OnInitListener 

 final private static float SPEECH_RATE = 0.9f;
 private TextToSpeech mTextToSpeech;
 private Bundle mParamsBundle;
 private Locale mLocale;

 public TextToSpeechHelper(Context context, Locale locale) 
 mTextToSpeech = new TextToSpeech(context, this);
 mLocale = locale;
 mParamsBundle = new Bundle();

 if (Build.VERSION.SDK_INT >= 26) 
 mParamsBundle.putString(TextToSpeech.Engine.KEY_PARAM_STREAM,
 String.valueOf(AudioManager.STREAM_ACCESSIBILITY));
 
 

 public void speak(String sentence) 
 speak(sentence, true);
 

 public void speak(String sentence, boolean modeAddToQueue) 
 if (Build.VERSION.SDK_INT >= 21) 
 mTextToSpeech.speak(sentence,
 modeAddToQueue ? TextToSpeech.QUEUE_ADD : TextToSpeech.QUEUE_FLUSH,
 mParamsBundle, null);
 else 
 mTextToSpeech.speak(sentence,
 modeAddToQueue ? TextToSpeech.QUEUE_ADD : TextToSpeech.QUEUE_FLUSH,null);
 
 

 public boolean isSpeaking() 
 return mTextToSpeech.isSpeaking();
 

 public void release() 
 mTextToSpeech.shutdown();
 

 @Override
 public void onInit(int status) 
 if(status != TextToSpeech.ERROR) 
 mTextToSpeech.setLanguage(mLocale);
 //mTextToSpeech.setSpeechRate(SPEECH_RATE);