I'm trying to build a count-down timer function in my app, however, it doesn't run as expected.

timer = new CountDownTimer(100, 10) {
                            @Override
                            public void onTick(long l) {
                                Log.d(TAG, "onTick: " + l);
                            }
                            @Override
                            public void onFinish() {
                                
                            }
                        }.start();

My expectations are that it would count down gradually from 100,90,80...till 0

Although the output timer is showing quite random times (34 then 18 then 8..etc). How can I achieve what I want?

It's difficult to explain the exact idea I'm trying to achieve but basically, I'm using touch listeners to hover over an item which in turn loads a few other items in the view. For some reason, there should be an intentional delay of around 100ms before these items could be displayed. I'm trying to build a progress bar that tells the user that something is loading rather than giving the impression that the screen is just stuck. I hope that helps to give a better idea of what I'm trying to achieve