LinearLayout ll = (LinearLayout) findViewById(R.id.ll);
//两行代码设置布局动画：
ILayoutAnimationController controller = ILayoutAnimationController.generateController(AnimationUtils.loadAnimation(this,R.anim.activity_open_enter),0.8f,ILayoutAnimationController.IndexAlgorithm.INDEXSIMPLEPENDULUM);
ll.setLayoutAnimation(controller);

//一行代码直接搞定：
ILayoutAnimationController.setLayoutAnimation(ll,R.anim.activity_open_enter,0.8f,ILayoutAnimationController.IndexAlgorithm.INDEXSIMPLEPENDULUM);

方法setLayoutAnimation中各参数介绍：
/**
 * 根据传入的动画资源ID、单个子View动画延时、子View动画执行顺序算法枚举值 创建一个新的CustomLayoutAnimationController实例，
 * 将此实例作为参数为viewGroup设置布局动画
 * @param viewGroup
 * @param animResId
 * @param delay
 * @param indexAlgorithm
 */
public static void setLayoutAnimation(@NonNull ViewGroup viewGroup,@AnimRes int animResId, float delay,@Nullable final IndexAlgorithm indexAlgorithm){
    Animation animation = AnimationUtils.loadAnimation(viewGroup.getContext(),animResId);
    setLayoutAnimation(viewGroup,animation,delay,indexAlgorithm);
}