ItemTouchHelper helper = new ItemTouchHelper(new ItemTouchHelper.Callback() {

            @Override

            public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {

                //首先回调的方法 返回int表示是否监听该方向

                int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT;//拖拽

//                int swipeFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;//侧滑删除

                return makeMovementFlags(dragFlags, -1);

            }

            @Override

            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {

                //滑动事件

                Collections.swap(mList, viewHolder.getAdapterPosition(), target.getAdapterPosition());

                mAdapter.notifyItemMoved(viewHolder.getAdapterPosition(), target.getAdapterPosition());

                return true;

            }

            @Override

            public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {

                if (viewHolder == null) {

//                   onMoveEnd(); //拖动结束

                    ToastUtil.showShort(mContext,"拖动结束");

                    mAdapter.notifyDataSetChanged();

                } else {

//                   onMoveStart();  //拖动开始

                }

                super.onSelectedChanged(viewHolder, actionState);

            }

            @Override

            public void onSwiped(final RecyclerView.ViewHolder viewHolder, int direction) {

                //侧滑事件

//                onItemDelete(viewHolder.itemView, viewHolder.getAdapterPosition());

//                mCAdapter.notifyItemRemoved(viewHolder.getAdapterPosition());

            }

            @Override

            public boolean isLongPressDragEnabled() {

                //是否可拖拽

                return true;

            }

            @Override

            public boolean isItemViewSwipeEnabled() {

                //是否可以删除

                return false;

            }

        });

        helper.attachToRecyclerView(mRvEdtSort); //设置给RecyleView