最简单的方法是修改skeleton.drawOrder。这是对Slot的引用列表，你可以根据自己的喜好重新排序。
The easiest way is to change skeleton.drawOrder. This is a list of references to the Slots which you can re-order as you like.
只要确保你没有设置了绘制顺序关键帧的动画，这样当动画播放时就会覆盖绘制顺序。
Just be sure that you don't have animations which have draw-order keyframes set, which would then overwrite the draw order when the animation is played.
