Implementing the Collection View Delegate Methods
The collection view delegate can manage selection and highlighting of cells, can track removal of cells or sections, and can be used to display the Edit menu for items and perform actions from the Edit menu. The basic flow in the sample app demonstrates cell selection and highlighting. Confirm that the delegate for the collection view object is set to the basic flow view controller, as shown in Figure 20.5.
Collection view cells are designed to be able to change visually when they are selected or highlighted. A collection view cell has a subview called contentView where any content to be displayed for the cell should go. It has a backgroundView, which can be customized and which is always displayed ...
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