Process: com.order.app.order, PID: 4380
                                                                   java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
                                                                       at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
                                                                       at java.util.ArrayList.get(ArrayList.java:308)
                                                                       at cart.CartActivity$1.onSwiped(CartActivity.java:106)

private void enableSwipeFunctions() {
        ItemTouchHelper.SimpleCallback simpleCallback = 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 direction) {
                int pos = viewHolder.getAdapterPosition();
                removePrice(cartItems.get(pos).getPrice());
                deleteDataWebService(cartItems.get(pos).getName());
                adapter.remove(pos);
                StringGenerator.showToast(CartActivity.this, cartItems.get(pos).getPrice());
                //accessWebService();
            }
        };

        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleCallback);
        itemTouchHelper.attachToRecyclerView(recyclerView);
    }

    private void removePrice(String price){
        if (cartItems.size()>0){
            float aftersum = Float.parseFloat(totalText.getText().toString().replace("€", " "));
            aftersum = aftersum - Float.parseFloat(price);
            String text = String.format("%.2f", aftersum);
            totalText.setText(String.valueOf(aftersum) + " €");
        }

    }