Question

I want to be able to decrease a value in an ArrayList to simulate an object being removed from a pile. However I cannot do this with ArrayList(String)

The example below is what i’ve attempted.

ItemArray.get(pressedItem + 1) = (ItemArray.get(pressedItem + 1)) - 1

Is there a way to get values in an ArrayList into a more manipulatable state?

EDIT:

Just to point out that my ArrayList is ArrayList(String) at the moment

Answer 1

You need to use List#set() to mutate the list.

List<Integer> items = new ArrayList<Integer>();
// later...
int position = pressedItem + 1;
items.set(position, items.get(position) - 1);