How to make a circle countdown timer?

Question

Java

I tried to do something like this:

new CountDownTimer(11000, 1000) {
            @SuppressLint("SetTextI18n")
            public void onTick(long l) {
                donutProgress.setProgress(l/1000);
                text.setText(String.valueOf(l / 1000));

            public void onFinish() {
                text.setText("Готово");
        }.start();

donutProgress is a third party library that makes a circular progress bar.
This works in principle, but the progress bar turns out to be jerky, that is, there are no intermediate positions between integers.
I need something like this:

Answer 1

You can use PropertyAnimation, changing the progress not immediately, but gradually for the widget.
For example, you need progress 30 - ObjectAnimator.ofInt(widget, "progress", 0..30).setDuration(100l).start()
If you want it yourself, Paint has a drawArc method. If you remember school geometry, you can write it in a couple of minutes.