March 2012
Intermediate to advanced
590 pages
22h 48m
English
Content preview from iOS Programming: The Big Nerd Ranch GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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UITableView’s Data Source
The process of providing a UITableView with rows in Cocoa Touch is different from the typical procedural programming task. In a procedural design, you tell the table view what it should display. In Cocoa Touch, the table view asks another object – its dataSource – what it should display. In our case, the ItemsViewController is the data source, so it needs a way to store item data.
In Chapter 2, you used an NSMutableArray to store BNRItem instances. You will do the same thing in this chapter, but with a little twist. The NSMutableArray that holds the BNRItem instances will be abstracted into another object – a BNRItemStore (Figure 9.6).
Figure 9.6 Homepwner object diagram
If an object wants to see all of the items, ...
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