字母跳动动画

ViewFragment.java

TextView tvChar = view.findViewById(R.id.char_tv);

        ValueAnimator animator = ValueAnimator.ofObject((fraction, startValue, endValue) -> {
            char start = (Character) startValue;
            char end = (Character) endValue;
            return (int) (start + (end - start) * fraction);
        }, 'A', 'Z');

        animator.addUpdateListener(animation -> {
            int s = (Integer) animation.getAnimatedValue();
            char ss = (char) s;
            com.apkfuns.logutils.LogUtils.w("ss==" + ss);
            tvChar.setText(String.format("%s", ss));
        });

        animator.setDuration(10000);
        animator.setInterpolator(new LinearInterpolator());
        animator.start();