执行方法之前的延迟

Question

I start an activity from another activity with an intent. This second activity doesn't have any UI, it just initializes some variables and executes automatically a method that makes some processing.

First I start this method calling it from onCreate, but inside the method I use some functionalities that must implement some interfaces, so, I think that these methods are being executed before they have had time to initialize.

So my question is about how to start automatically a method when I start a new activity, but giving to it some time before starting, to let the implemented interfaces initialize.

UPDATE--

public class GameActivity extends Activity implements TextToSpeech.OnInitListener {

    private static TextToSpeech tts;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.game);

        tts = new TextToSpeech(this, this);
        //...
        SpeechWhenMotion();
    }


    public void SpeechWhenMotion() {
        //...
        tts.speak("Inicializando...", TextToSpeech.QUEUE_ADD, null);
        //...
    }

It doesn't speak because it does not have time to call onInit method from onInitListener.

Answer 1

You should move your call to SpeechWhenMotion() from onCreate() to the onInit() method from TextToSpeech.OnInitListener . The whole point of the TextToSpeech.OnInitListener is that you get the callback to onInit() when the initialisation is complete.

You are correct that calling it in onCreate() is too early - you must wait for onInit().