Question

I have an application using TTS very heavily. It’s working fine, but I need to tweak it.

I am using a TTS object in every screen and this is not good. I wish I could creat the TTS object just once (like a Singleton) and them, use it throughout all my activities.

Here is the base code for this to work:

    public class SimOuNaoActivity extends Activity implements OnInitListener{
    public TextToSpeech tts;
        private int MY_DATA_CHECK_CODE = 0;


        @Override
        public void onCreate(Bundle savedInstanceState) {

          super.onCreate(savedInstanceState);
    Intent checkIntent = new Intent();
    checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
    startActivityForResult(checkIntent, MY_DATA_CHECK_CODE);
    tts.speak("Testing 1,2,3", TextToSpeech.QUEUE_ADD, null);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == MY_DATA_CHECK_CODE) {
        if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
            tts = new TextToSpeech(this, this);
        } else {
            // missing data, install it
            Intent installIntent = new Intent();
            installIntent
                    .setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
            startActivity(installIntent);
        }
    }

}

@Override
public void onInit(int status) {
    if (status == TextToSpeech.SUCCESS) {
        // Toast.LENGTH_LONG).show();
    } else if (status == TextToSpeech.ERROR) {
        // Toast.LENGTH_LONG).show();
    }
}

@Override
public void onDestroy() {
    if (tts != null) {
        tts.stop();
        tts.shutdown();
    }
    super.onDestroy();
       System.gc();
    }

    }

What is the correct approach to have the TTS object available in all my activities? Have in mind that it uses some methods like startActivityForResult, etc… so… I would like to know what I can do to make this work fine.

Can anyone help me, please?

Any help is appreciatted!

Thanks!

Answer 1

Have a look here to share stuff between activities and program with nicer design in android :
Intent.putExtras size limit?