RecyclerView网格布局瀑布流布局设置间距

        adapter.addHeaderView(headerView, 0);
        adapter.getHeaderLayout().setId(R.id.author_head_view);

        recycleView.addItemDecoration(new RecyclerView.ItemDecoration() {
            @Override
            public void getItemOffsets(@NotNull Rect outRect, @NotNull final View view, @NotNull final RecyclerView parent, @NotNull RecyclerView.State state) {
                super.getItemOffsets(outRect, view, parent, state);
                if (view.getId() != R.id.author_head_view) {
                    int dLong = ScreenUtils.dip2px(AuthorActivity.this, 13);
                    int dShort = ScreenUtils.dip2px(AuthorActivity.this, 2);
                    int spanIndex = ((StaggeredGridLayoutManager.LayoutParams) view.getLayoutParams()).getSpanIndex();
                    if (spanIndex == 0) {
                        outRect.left = dLong;
                        outRect.right = dShort;
                    } else {
                        outRect.left = dShort;
                        outRect.right = dLong;
                    }
                }
            }
        });