When is tableView:numberOfRowsInSection: called in UITableView?

Question

tableView:numberOfRowsInSection is sent to the delegate of a UITableView to find out how many rows it needs to have in a given section.

My question is, when and how often is this method called?

Answer 1

The method is called very first time the tableview is getting loaded and if you are more interested in the delegates then put a breakpoint and check when and where which delegate is called and how many times.

Answer 2

Below are the instances when that function will get called,

1. For the first time when table is loaded
2. the time you reload the table data
3. the time you add/update/delete your row or sections dynamically.