java - Speak Failed Not Bound to TTS Engine -

so had original activity same exact code speaking, had move code activity. difference can tell text speech not called in asynchronous method. speaking occurs in speakfull method. these errors:

speak failed: not bound tts engine isspeaking failed: not bound tts engine 

i'm new android development, i've searched through other solutions problem, , can't seem find solution make mine work. advice, or appreciated.

code:

   package com.example.webview;  import android.os.bundle; import android.app.activity; import android.content.context; import android.content.dialoginterface; import android.content.dialoginterface.onclicklistener; import android.content.intent; import android.speech.tts.texttospeech; import android.text.method.scrollingmovementmethod; import android.view.menu; import android.view.view; import android.widget.button; import android.widget.textview;  public class readout extends activity implements texttospeech.oninitlistener, onclicklistener {       boolean paused = false;     string lefttoread = null;     string res = null;      @suppresswarnings("deprecation")     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.read_out);         intent intent = getintent();         res = intent.getextras().getstring("response");         textview textv = (textview) findviewbyid(r.id.textview1);         textv.settext(res);         textv.setmovementmethod(new scrollingmovementmethod());         android.view.display display = ((android.view.windowmanager)getsystemservice(context.window_service)).getdefaultdisplay();          textv.setheight((int)(display.getheight()*0.76));         lefttoread = speakfull(res);     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         return true;     }      public string speakfull(string text){         system.out.println("speaking: " + text);         texttospeech tts = new texttospeech(this, this);         system.out.println("speaking");         string[] sentences = text.split("\n|\\.(?!\\d)|(?<!\\d)\\."); // regex splits body of text sentences of body stored in string array.         for(int = 0; < sentences.length; i++){             if(!tts.isspeaking() && !paused){                 system.out.println("speaking: " + i);                 tts.speak(sentences[i], texttospeech.queue_flush, null);             }else if(paused){                 system.out.println("paused");                 string paused = "";                 for(int j = - 1; j < sentences.length; j++){                     paused += sentences[j];                 }                 return paused;             }else{                 i--;             }             if(i == sentences.length - 1){                 return "message 001: complete";             }         }         return null;     }      @override     public void oninit(int arg0) {         // todo auto-generated method stub      }      public void clickpause(view v){         if(paused){             paused = false;             button b = (button) findviewbyid(r.id.button1);             b.settext("play");         }else{             paused = true;             button b = (button) findviewbyid(r.id.button1);             b.settext("pause");             if(lefttoread == null){                 lefttoread = speakfull(res);             }else{                 lefttoread = speakfull(lefttoread);             }         }     }      @override     public void onclick(dialoginterface arg0, int arg1) {         // todo auto-generated method stub      }  } 

you can call speak() after oninit() called. move tts speak code in oncreate oninit()

@override public void oninit(int status) {     if (status == texttospeech.success) {          lefttoread = speakfull(res);  } 

and initialize pause true boolean paused = true;