@Override
public boolean isItemViewSwipeEnabled() {
    return true;
}

ItemTouchHelper.Callback mCallback2 = new ItemTouchHelper.SimpleCallback(ItemTouchHelper.UP|ItemTouchHelper.DOWN,ItemTouchHelper.RIGHT) {
   
    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        int fromPosition = viewHolder.getAdapterPosition();
        int toPosition = target.getAdapterPosition();
        if (fromPosition < toPosition) {
            //分别把中间所有的item的位置重新交换
            for (int i = fromPosition; i < toPosition; i++) {
                Collections.swap(mData, i, i + 1);
            }
        } else {
            for (int i = fromPosition; i > toPosition; i--) {
                Collections.swap(mData, i, i - 1);
            }
        }
        recyclerAdapter.notifyItemMoved(fromPosition, toPosition);
        return true;
    }

    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        int position = viewHolder.getAdapterPosition();
        mData.remove(position);
        recyclerAdapter.notifyItemRemoved(position);
    }

    @Override
    public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
        super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
        if(actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {
            //滑动时改变Item的透明度
            final float alpha = 1 - Math.abs(dX) / (float)viewHolder.itemView.getWidth();
            viewHolder.itemView.setAlpha(alpha);
            viewHolder.itemView.setTranslationX(dX);
        }
    }

    @Override
    public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {
        super.onSelectedChanged(viewHolder, actionState);

    }

    @Override
    public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
        super.clearView(recyclerView, viewHolder);
        viewHolder.itemView.setBackgroundColor(0);
    }
};

//添加ItemTouchHelper接口
ItemTouchHelper itemTouchHelper = new ItemTouchHelper(mCallback);

//指定RecyclerView
itemTouchHelper.attachToRecyclerView(recyclerView);

LinearSnapHelper mLinearSnapHelper = new LinearSnapHelper();
mLinearSnapHelper.attachToRecyclerView(recyclerView);

PagerSnapHelper mPagerSnapHelper = new PagerSnapHelper();
mPagerSnapHelper.attachToRecyclerView(recyclerView);