how to get result from thread in android?

Question

I have a main class, a worker thread class and it separated. In main thread, I pass input to worker thread and ask for it to work. When it finish, I want it to send back result

Answer 1

Maybe you should try AsynTask, it is designed for just that:

 private class MyThread extends AsyncTask {
     protected Long doInBackground(URL... urls) {
            // Calculate and return retulst
     }


     protected void onPostExecute(Long result) {
         // This is executed in main Thread, use the result
     }
 }  

You execute this thread like this:

new MyThread().execute(params, ...);

See http://developer.android.com/reference/android/os/AsyncTask.html