Question

I’ve got an activity that keeps reading words to the user, and using onUtteranceCompleted with textTospeech to display something when the code is completed.

Inside onUtteranceCompleted I have this code to delay a function with a second:

Runnable task = new Runnable() {
    public void run() {
        //runs on ui
        runOnUiThread(new Runnable() {
            public void run() {
                readWord();
            }
        });
    }
};
worker.schedule(task, 1, TimeUnit.SECONDS);

This seems like it works well, but I think it is causing a problem.
When I rotate the screen of my phone (I guess this starts a new activity).
I hear some words being read in the background. I guess this is because of runOnUiThread() which makes the activity continue in the background.

How could I avoid 2 activities running ? I would prefer if I don’t have to stop the screen from rotating on doing some weird patch!

Thank you

EDIT:

public void readWord() {
    if (this.readingOnPause) {
        return;
    }

    txtCurrentWord.setText(currentItem[1]);

    this.hashAudio.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,"word");
    this.tts.setLanguage(Locale.US);
    this.tts.speak(this.currentItem[1], TextToSpeech.QUEUE_FLUSH,this.hashAudio);
}

EDIT2:

instantiation of worker:

private static final ScheduledExecutorService worker = Executors.newSingleThreadScheduledExecutor();

Answer 1

Ok so this is a fix I’ve come up with, if someone has a better solution, I’m listening.

1. I’ve added android:configChanges="keyboardHidden|orientation" inside the activity in the androidmanifest

2.

and then a function that is called when the screen is rotate:

@Override
public void onConfigurationChanged(Configuration newConfig)
{
  super.onConfigurationChanged(newConfig);
  setContentView(R.layout.streaming);

  initializeUI(); //contains all the findViewByID etc...
}