text to speech - synthesizeToFile failed: not bound to TTS engine , when using TextToSpeech in android

Question

I am using Android TextToSpeech API, I want to save the convert text2speech as a file on the SD-card memory, but I got the error:

 synthesizeToFile failed: not bound to TTS engine

My code to use TTS is :

public void onActivityResult(int requestCode, int resultCode, Intent intent) {


        if (requestCode == MY_DATA_CHECK_CODE) {
            if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
                tts = new TextToSpeech(this, this);

                if(getIntent() != null){
                    if(getIntent().getExtras()!=null){
                        String d = getIntent().getExtras().getString("data");

                        String data[] = d.split("-");
                        bookName = data[0];
                        loadPage(data[0], Integer.parseInt(data[1]));
                    }
                }
                Log.d("TTS","Data is loaded");

            }
            else {
                Intent installTTSIntent = new Intent();
                installTTSIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                startActivity(installTTSIntent);
            }
        }
    }

where inside the loadPage() function a call the synthesizeToFile function as below :

String tempDestFile = appTmpPath.getAbsolutePath() +"/"+ fileName;
tts.synthesizeToFile(speakTextTxt, myHashRender, tempDestFile);

Answer 1

You have to wait until after onInit is called before you can call speak, synthesizeToFile etc... put your loadPage method in onInit after checking for success there.