RecycleView 瀑布流滑动移位

RecycleView StaggeredLayoutManager(瀑布流)滑动的时候，默认会出现item移动的问题，需以下来个步骤来解决：

　　附上StaggeredLayoutManager中的一段源码：

　　　　

 /**
      * Does not do anything to hide gaps.
      */
     public static final int GAP_HANDLING_NONE = 0;

     @Deprecated
     public static final int GAP_HANDLING_LAZY = 1;

     /**
      * When scroll state is changed to {@link RecyclerView#SCROLL_STATE_IDLE}, StaggeredGrid will
      * check if there are gaps in the because of full span items. If it finds, it will re-layout
      * and move items to correct positions with animations.
      * <p>
      * For example, if LayoutManager ends up with the following layout due to adapter changes:
      * <pre>
      * AAA
      * _BC
      * DDD
      * </pre>
      * <p>
      * It will animate to the following state:
      * <pre>
      * AAA
      * BC_
      * DDD
      * </pre>
      */
     public static final int GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS = 2;

StaggeredLayoutManager

1： 滑动中，不处理 gap：

　　　mStaggeredLayoutManager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_NONE);

　2： 给每个 item,设置大小：

　　　viewHolder.cardView.setLayoutParams(layoutParams);