From http://stackoverflow.com/questions/26502819/animate-textview-to-increase-integer-and-stop-at-some-point/26503510#26503424

textview_text_animation

public void animateTextView(int initialValue, int finalValue, final TextView textview) {
        DecelerateInterpolator decelerateInterpolator = new DecelerateInterpolator(0.8f);
        int start = Math.min(initialValue, finalValue);
        int end = Math.max(initialValue, finalValue);
        int difference = Math.abs(finalValue - initialValue);
        Handler handler = new Handler();
        for (int count = start; count <= end; count++) {
            int time = Math.round(decelerateInterpolator.getInterpolation((((float) count) / difference)) * 100) * count;
            final int finalCount = ((initialValue > finalValue) ? initialValue - count : count);
            handler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    textview.setText(finalCount + "");
                }
            }, time);
        }
    }