gistfile1.txt

public interface MyListener{
    public void heard(String response);
}
 
public void launchTask()
{
    new MyTask(listener).execute();
}
 
MyListener listener = new MyListener(){
    public void heard(response){
                     //Do whatever you wanted       
    }
    
}
 
public class MyTask extends AsyncTask<Void, Void, Void>{
                        private MyListener listener;
                        
                        public MyTask(MyListener listener){
                                                this.listener = listener;
                        }
                        ...
                        
                        protected void onPostExecute(){
                                                listener.heard("Word up");
                        }
}