Communicating between UIViewController and UITableViewDelegate

Question

I have a UIViewController which contains a UITableView (amongst other views).

The UITableView could get its cells from one of two UITableDataSource, depending on some condition.

My UITableDataSource class also acts as my UITableViewDelegate.

When a cell is selected (tableView:didSelectRowAtIndexPath) I may want to perform an action on the UIViewController, such as performSegue or show an alert.

What would be the best way to do this?

1. Add a weak reference to the UIViewController inside each datasource/delegate class
2. Create a delegate per datasource/delegate class which calls functions inside my UIViewController
3. Your suggestion here!

I considered making my UIViewController the UITableViewDelegate but as the cells are different depending on the source I thought it would get messy.

Note: I say "best way" but really I am just interested in alternate approaches

Answer 1

The most common approach is to subclass UITableViewController and implement UITableViewDelegate and UITableDataSource there. You can return whichever cell you require in cellForRowAtIndexPathbased on any state in your controller class.