Question

From the BroadcastReceiver I want to call a activity without graphic. Without graphic because it will speak some words.

Intent iSpeechIntent = new Intent(context, TTS.class);                          
iSpeechIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(iSpeechIntent);

but activity cycle is not finished correctly. onDestroy() method is never executed. Why?

@Override
    public void onDestroy() {
        // Don't forget to shutdown!
        if (tts != null) {
            tts.stop();
            tts.shutdown();
        }
        super.onDestroy();
    }

And is OK if i am using activity without graphic XML just for speak some text with TTSEngine?

Answer 1

You misunderstood Activity lifecycle. onDestroy() is NOT called when your activity is dismissed. And dismissing it (i.e. by starting another activity) does NOT equal destroying activity (however you may enforce destroy of activity, by calling finish() – and then your onDestroy() method will be invoked). You may want to move your code to onPause() and onResume() respectively or maybe you shall use IntentService instead, if you dot require any UI for the task.