RingProgressBar.java 文件源码

private void initAnimatior() {
    pathInterpolatorCompat = PathInterpolatorCompat.create(0.7f, 0f, 0.3f, 1f);
    mAnimator = ValueAnimator.ofInt(0, 359);
    mAnimator.setDuration(mDuration);
    mAnimator.setRepeatCount(-1);
    mAnimator.setInterpolator(pathInterpolatorCompat);
    mAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            mCurrentAngle = (int) animation.getAnimatedValue();

            invalidate();
        }
    });
}