Common Properties for iOS Foundation--uiview

Common properties and methods of UIView

@property (nonatomic,readonly) UIView *superview;//Get your own parent control object

@property (nonatomic,readonly,copy) Nsarry *subviews;//Get all of your child control objects

@property (nonatomic) nsinterger tag;//control ID (Identity), the parent control can find the corresponding child control by tag

@property (nonatomic) Cgaffinetransform transform;//The deformation properties of the control (you can set the rotation angle, scale, pan, and other properties)

-(void) Addsubview: (UIView *) view; Add a child control view

-(void) Removefromsuperview;//Remove from Control

-(UIView *) Viewwithtag: (nsinteger) tag; Find the corresponding control based on a tag ID (usually a child control)

@property (nonatomic) cgrect frame; The position and dimensions of the control rectangle in the parent class control (in the upper-left corner of the parent control as the origin of the coordinates)

@property (nonatomic) cgrect bounds;//control rectangle's position and dimensions (in its own upper-left corner as the origin of the coordinates, so bounds x, Y is generally 0)

@property (nonatomic) cgpoint Center;//The position of the midpoint of the control (in the upper left corner of the parent control as the origin of the coordinates)

Common Properties for iOS Foundation--uiview