UITableViewCell how to collapse (expand)?

Question

Objective-C

Hello everyone
, I have a question, how can I make UITableViewCell collapse and expand by clicking (tap) on the cell itself?
That is, you need the cell that is located below to move down, and PickerView fits in between the cells (see picture)

PS tell me good iOS programming forums.

Answer 1

Here is an example
www.appcoda.com/expandable-table-view

Answer 2

Good forum - stackoverflow.com
Usually all links lead almost immediately to it, if you ask Google something like
ios expanding table view cells