/**
     * 設定瀑布流佈局中的某個item，獨佔一行、佔一列、佔兩列、等等
     * @param mStaggeredGridLayoutManager
* @param position 目標item所在的位置
     * @param TARGET_ITEM_TYPE 目標item的條目型別
     * @param parentView 該item的整個佈局
     */
private void setStaggeredItemSpanCount(StaggeredGridLayoutManager mStaggeredGridLayoutManager,int 
 
position,int TARGET_ITEM_TYPE,View parentView){
    int type = getItemViewType(position);
    if(type == TARGET_ITEM_TYPE){
        StaggeredGridLayoutManager.LayoutParams layoutParams =
                new StaggeredGridLayoutManager.LayoutParams(
                        ViewGroup.LayoutParams.MATCH_PARENT
 
,
ViewGroup.LayoutParams.WRAP_CONTENT);
layoutParams.setFullSpan(true);
parentView.setLayoutParams(layoutParams);
}
}