UScrollView lazy loading unload view

I have a question regarding the page control sample code from apple.

in the sc开发者_C百科rollViewDidScroll method there's a comment:

// A possible optimization would be to unload the views+controllers which are no longer visible

I wonder how to unload the views+controllers. As I have problems with my memory management I really need that.

Hope anyone can help.

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From your scrollViewDidScroll you could figure out the current coordinates the user is in from the contentSize with this as the user scrolls out a certain viewController pop that viewController or view from of the current view.

[currentView removeFromSubView];

You could do this but I would suggest you try to use UITableView as this is all damn easy to do it there...