If you want to create handler , here is the code snippet that can help you out.

Step :-1 Create the object for Handler.

private Handler myHandler = new Handler();

Step :-2 Create the Runnable Thread.

 private Runnable myRunnableThread = new Runnable()
      {
        public void run()
           {
             try {
                  /*Here you can perform the task you want to play at the backgroubd*/
                  Log.d("MyMessage", "I am on thr running thread");
                 }
              catch (Exception ex)
                 {
                   finish();
                 }
             }
        };

Step 3:-Now you can call the handler where you want to run the thread.

    /*call postDelayed method of Handler that takes 2 argument "runnable thread" and
      "milliseconds" after which you want to run the thread */

myHandler.postDelayed(myRunnableThread, 1);