Calling functions after a delay.

How to set delay

 //Here's a runnable/handler combo
                Runnable mMyRunnable = new Runnable()
                {
                    @Override
                    public void run()
                    {
                        //Your function or code segment will be here !
                    }
                };

                Handler myHandler = new Handler();
                myHandler.postDelayed(mMyRunnable, 900); //Message will be delivered in 0.9 second.