ios - Updating collection view controller from cell value -

i have uicollectionviewcontroller want take orders products. each custom collectionviewcell has uistepper take quantity each product user wishes order. every time value of stepper changes, price of product multiplied quantity , total product calculated.

how go passing information uicollectionviewcontroller each individual cell calculate overall total?

i updating controllers total property cellforrowatindexpath realised doesn't update every time stepper's value changed.

you should create protocol in custom cell, , assign view controller delegate. every time value changes in cell send message view controller, , view controller can update total accordingly.