543441727 / dragrecyclerview Goto Github PK

   @Override
            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
                //得到当拖拽的viewHolder的Position
                int fromPosition = viewHolder.getAdapterPosition();
                //拿到当前拖拽到的item的viewHolder
                int toPosition = target.getAdapterPosition();
                if (fromPosition < toPosition) {
                    for (int i = fromPosition; i < toPosition; i++) {
                        Collections.swap(datas, i, i + 1);
                    }
                } else {
                    for (int i = fromPosition; i > toPosition; i--) {
                        Collections.swap(datas, i, i - 1);
                    }
                }
                myAdapter.notifyItemMoved(fromPosition, toPosition);
                return true;
            }

            @Override
            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
                //得到当拖拽的viewHolder的Position
                int fromPosition = viewHolder.getAdapterPosition();
                //拿到当前拖拽到的item的viewHolder
                int toPosition = target.getAdapterPosition();
                Collections.swap(datas, fromPosition, toPosition);
                myAdapter.notifyItemMoved(fromPosition, toPosition);
                return true;
            }