PlayPauseDrawable.java 文件源码

private void toggle() {
    if (animator != null) {
        animator.cancel();
    }

    animator = ObjectAnimator.ofFloat(this, PROGRESS, isPlay ? 1.0F : 0.0F, isPlay ? 0.0F : 1.0F);
    animator.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animation) {
            isPlay = !isPlay;
        }
    });

    animator.setInterpolator(new DecelerateInterpolator());
    animator.setDuration(200);
    animator.start();
}