是 UIView 类型的 UIImageView

Question

I am new to Objective-c. a loop is created to iterate through items or entries of UIView that are displayed in the storyboard. the storyboard contains a UIScrollView and the UIScrollView encompass 7UIViews and 2 UIImageView. the loop I have in the code, iterated through 9 entries. i expected the loop to iterate through 7 entries as there are UIViews and two UIImageViews.

My question is, is UIImageView is of type UIView?

Answer 1

yes, a UIImageView is of type UIView

UIKIT_EXTERN API_AVAILABLE(ios(2.0)) @interface UIImageView : UIView 

and UIView is of type

UIKIT_EXTERN API_AVAILABLE(ios(2.0)) @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>

and UIResponder is of type

UIKIT_EXTERN API_AVAILABLE(ios(2.0)) @interface UIResponder : NSObject <UIResponderStandardEditActions>

so UIImageView inherits everything from NSObject, UIResponder, and UIView and is of type NSObject, UIResponder, and UIView

good luck