iOS Programming: The Big Nerd Ranch Guide

Relaying Actions from UITableViewCells

Sometimes, it is useful to add a UIControl or one of its subclasses, like a UIButton, to a UITableViewCell. For instance, you want users to be able to tap the thumbnail image in a cell and see a full-size image for that item. In this section, you will do that by adding a transparent button on top of the thumbnail. Tapping this button will show the full-size image in a UIPopoverController when the application is running on an iPad.

Open BNRItemCell.m and stub out a method that will trigger showing the image.

- (IBAction)showImage:(id)sender
{

}

Now, in BNRItemCell.xib, drag a UIButton onto the content view. Remove the text from the button. Select both the UIImageView and UIButton, and then ...