Delete position of array

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Good afternoon

I have an order app, record the items within an array when I need to delete an item from the request, somehow the array size does not decrease for example I registered 3 items and delete one, the size of the array is still 3 and if I don’t add another item to complete, the app hangs.

I’ve tried some things:

int size = request items(). size -1;

pedidoList.remove(lastindex)

Still giving trouble. what could be?

java android arraylist

  • pedido.itens() and pedidoList reference the same object?

  • Hello! request.items is a request class facility that accesses the item attribute which is the arraylist. pedidoList is another arrayList of the Requests class I use to list orders in Recycler view. I don’t know if I can understand...

1 answer

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Hello,

It turns out that you put the current value of the order quantity into the variable size and after that, she is not changed, to correct, you can call him again:

int size = pedido.itens().size -1;

pedidoList.remove(lastindex);

size = pedido.itens().size -1;

But this way you are, you could create the size after removing the item, as you do not use the variable size before calling the method remove.

  • Good evening. I’m sorry, I don’t quite understand! Could I use it that way? decrease by 1 of the size of the array but have to call after removing the item, right?

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