java - Recycler将项目视为堆栈

Question

是否可以将 android Recyclerview 项创建为堆栈。多个项目需要位于顶部项目下方。还需要查看前一个项目底部的堆栈项目。

public class OverlapDecoration extends RecyclerView.ItemDecoration {

        @Override
        public void getItemOffsets(Rect outRect, View view,
                                   RecyclerView parent,
                                   RecyclerView.State state) {
            final int itemPosition = parent.getChildAdapterPosition(view);
            if (itemPosition == 0) {
                return;
            }
            outRect.set(0, -150, 0, 0);
        }

    }

recyclerView.addItemDecoration(new OverlappDecoration());
recyclerview.setLayoutManager(new LinearLayoutManager(context));

Answer 1

使用从底部堆叠项目

LinearLayoutmanager layoutManager = new LinearLayoutManager(this);
layoutManager.setReverseLayout(true);

并在装饰器中提供bottom边距，而不是top边距

public class OverlapDecoration extends RecyclerView.ItemDecoration {

        @Override
        public void getItemOffsets(Rect outRect, View view,
                                   RecyclerView parent,
                                   RecyclerView.State state) {
            final int itemPosition = parent.getChildAdapterPosition(view);
            if (itemPosition == 0) {
                return;
            }
            outRect.set(0, 0, 0, -150);//<-- bottom
        }

    }

recyclerView.addItemDecoration(new OverlappDecoration());
recyclerview.setLayoutManager(new LinearLayoutManager(context));