DetailActivity.java 文件源码

private void animateFAB(boolean start, View fab)
{
    ViewCompat.animate(fab)
        .scaleX(start ? 1.0f : 0.0f)
        .scaleY(start ? 1.0f : 0.0f)
        .alpha(start ? 1.0f : 0.0f)
        .setDuration(start ? 300 : 100)
        .setInterpolator(new AnticipateOvershootInterpolator())
        .withLayer()
        .start();
}