Common properties and methods of UIView

Source: Internet
Author: User

Common Properties:

@property (nonatomic,readonly) UIView *superview;

Get your own parent control object

@property (nonatomic,readonly,copy) Nsarray *subviews;

Get all of your child control objects

@property (nonatomic) nsinteger tag;

The ID (identity) of the control, and 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)

@property (nonatomic) cgrect frame;

The position and dimensions of the control's rectangle in the parent control (the origin of the coordinates in the upper-left corner of the parent control), you can define the position of the control (origin) and the size (size)

@property (nonatomic) cgrect bounds;

The position and dimensions of the rectangle where the control is located (the origin of the coordinates in its upper-left corner, so bounds X, Y is typically 0), you can define the size of the control (size)

@property (nonatomic) Cgpoint Center;

Position of the control's midpoint (in the upper-left corner of the parent control as the origin of the coordinates), you can define the position of the Control (center)

The following are frequently used properties and methods:

Common methods:

-(void) Addsubview: (UIView *) view;

Add a child control view

-(void) Removefromsuperview;

Remove from parent control

-(UIView *) Viewwithtag: (nsinteger) tag;

Find the corresponding control based on a tag ID (usually a child control)

Common properties and methods of UIView

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