ViewTransformer.java 文件源码

@UiThread
public void collapse() {
    ValueAnimator animator = ValueAnimator.ofInt(Views.measureHeight(view), 0);
    animator.setInterpolator(new LinearOutSlowInInterpolator());
    animator.setDuration(Durations.MEDIUM);

    animator.addUpdateListener(this);
    animator.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animation) {
            view.setVisibility(View.GONE);
        }
    });

    animator.start();
}