Text To Speech app UI is slow android

Question

In my app I am using TTS. I have 20 different activities which are changed when the user swipe left or right. According the activity, a text is spoken. I am executing tts wi

Answer 1

I had the same problem and was about to comment on seeing the following logcat error ...skipped x many frames. The application may be doing too much work on its main thread.

Of course I was sure TTS was being called from another thread which I checked using Thread.currentThread().getName() But it turns out however that OnInit was indeed still running on the main thread and it looks like setting the language is an expensive operation. A quick change to run contents of onInit in a new thread and the UI freezing/choreographer complaining stopped:

@Override
public void onInit(int status) {
   new Thread(new Runnable() {
      public void run() {
         if(status != TextToSpeech.ERROR) // initialization me error to nae ha
         {
            tts.setPitch(1.1f); // saw from internet
            tts.setSpeechRate(0.4f); // f denotes float, it actually type casts 0.5 to float
            tts.setLanguage(Locale.US);
         }
      }
   }
}).start()