添加边距后，recyclerView项之间的空格也不会显示

public class SpaceItemDecoration extends RecyclerView.ItemDecoration {
    private int space;

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

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        outRect.left = space;
        outRect.right = space;
        outRect.bottom = space;

        // Add top margin only for the first item to avoid double space between items
        if (parent.getChildAdapterPosition(view) == 0) {
            outRect.top = space;
        } else {
            outRect.top = 0;
        }
    }
}

int space = getResources().getDimensionPixelSize(R.dimen.spacing);
recyclerView.addItemDecoration(new SpaceItemDecoration(space));

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_marginTop="8dp"
    android:layout_marginBottom="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginEnd="8dp">

    <!-- Item布局的其他内容 -->

</LinearLayout>