Android/java - How to do that loop wait to do action

Question

I try to do app which show elements. Each element should start showing when the before element was hidden. Each element is showing 2 seconds. Code:

public void gameStart()
{
    do
    {
        data = random.nextInt(6) + 1;

                if (data == 1)
                {
                    CountDownTimer cdt = new CountDownTimer(2000, 1000)
                    {

                        @Override
                        public void onTick(long millisUntilFinished)
                        {
                            element1.setVisibility(View.VISIBLE);

                        }

                        @Override
                        public void onFinish()
                        {
                            element1.setVisibility(View.GONE);

                        }
                    }.start();
                {
                    CountDownTimer cdt = new CountDownTimer(2000, 1000)
                    {

                        @Override
                        public void onTick(long millisUntilFinished)
                        {
                            element2.setVisibility(View.VISIBLE);

                        }

                        @Override
                        public void onFinish()
                        {
                            element2.setVisibility(View.GONE);

                        }   
                    }.start();

                } else if (data == 3)
                {
                    CountDownTimer cdt = new CountDownTimer(2000, 1000)
                    {

                        @Override
                        public void onTick(long millisUntilFinished)
                        {
                            element3.setVisibility(View.VISIBLE);
                        }

                        @Override
                        public void onFinish()
                        {
                            element3.setVisibility(View.GONE);

                        }
                    }.start();

                } else if (data == 4)
                {
                    CountDownTimer cdt = new CountDownTimer(2000, 1000)
                    {

                        @Override
                        public void onTick(long millisUntilFinished)
                        {
                            element4.setVisibility(View.VISIBLE);

                        }

                        @Override
                        public void onFinish()
                        {
                            element4.setVisibility(View.GONE);

                        }
                    }.start();

                } else if (data == 5)
                {
                    CountDownTimer cdt = new CountDownTimer(2000, 1000)
                    {

                        @Override
                        public void onTick(long millisUntilFinished)
                        {
                            element5.setVisibility(View.VISIBLE);
                        }

                        @Override
                        public void onFinish()
                        {
                            element5.setVisibility(View.GONE);

                        }
                    }.start();


                } else if (data == 6)
                {
                    CountDownTimer cdt = new CountDownTimer(2000, 1000)
                    {

                        @Override
                        public void onTick(long millisUntilFinished)
                        {
                            element6.setVisibility(View.VISIBLE);
                        }

                        @Override
                        public void onFinish()
                        {
                            element6.setVisibility(View.GONE);

                        }
                    }.start();


                }



                id = id + 1;
                text.setText("cos " + id);




    } while (id < 3);

All elements are being shown in the same time. And I try add

Thread.sleep(2500);

But this stoped the action in window. I try add this after code:

Timer timer = new Timer();

timer.schedule( new TimerTask() {
    public void run() {
    }
 }, 0, 60*1000);

But loop wasn't stay. I try do it with notify() and wait(), but it also don't work.

Don't suggest me to do do next action in onFinish() because this must be repeat a lot. Anybody have another idea?

EDIT I also use Handler but it don't work

Answer 1

I would recommend you not to implement this code in the main thread. Create an async task, which hides a button and on postExequte calls itself.