Knowing the Target-Action Patterns for iPhone App Development

Following are the Target-Action patterns that you use when programming iPhone applications. You generally will specify the target as the view controller (which you’ll have already subclassed) because it controls the view in which these controls reside.

• UITabBarItem (for items on the tab bar)

• UIBarButtonItem (for items on the navigation bar and tool bar)

• UIButton

• UIDatePicker

• UIPageControl

• UISegmentedControl

• UITextField

• UISlider

• UISwitch