RecyclerView条目间隔

LinearLayoutManager设置Item间距的的一个辅助类（暂时只有LinearLayoutManager！！）

public class SpaceItemDecoration extends RecyclerView.ItemDecoration {
    int space ;

    public SpaceItemDecoration(int space) {
        this.space = space;
    }

    @Override
    public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
        super.getItemOffsets(outRect, view, parent, state);
        outRect.left = space;
        outRect.right = space;
        outRect.bottom = space;
        if (parent.getChildAdapterPosition(view) == 0) {
            outRect.top = space;
        }
    }
}

设置间距

 //设置条目之间的的间距
 xrecyClerView.addItemDecoration(new SpaceItemDecoration(30));