您可以使用以下代码（来自Android支持V7的`ItemTouchHelper.SimpleCallback`）从RecyclerView中删除卡片使用滑动手势

You can use below code (`ItemTouchHelper.SimpleCallback` from Android support V7) to remove the cards from RecyclerView using swipe gesture

ItemTouchHelper.SimpleCallback simpleItemTouchCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {

        @Override
        public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
            return false;
        }

        @Override
        public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {

            contacts.remove(viewHolder.getAdapterPosition());
            ca.notifyItemRemoved(viewHolder.getAdapterPosition());
        }

        @Override
        public void onMoved(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, int fromPos, RecyclerView.ViewHolder target, int toPos, int x, int y) {
            super.onMoved(recyclerView, viewHolder, fromPos, target, toPos, x, y);
        }
    };

    ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleItemTouchCallback);
    itemTouchHelper.attachToRecyclerView(recList);