RecycleView表格布局添加条目间隔

public class AdaperItemDecoration extends RecyclerView.ItemDecoration {

    int defaultMargin = Tool.dp2px(getActivity(), 12);

    @Override
    public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
        super.onDraw(c, parent, state);

    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        super.getItemOffsets(outRect, view, parent, state);
        int index = parent.getChildLayoutPosition(view);
        if (index % 2 == 0) {
            outRect.right = defaultMargin / 2;
        } else {
            outRect.left = defaultMargin / 2;
        }
        outRect.bottom = defaultMargin;
    }
}

直接调用

rv.addItemDecoration(new AdaperItemDecoration());