//扩展后可以直接用点语法访问view以及其子类的尺寸。还可以直接用点语法改变UIView的尺寸。
//-----------.h
#import <UIKit/UIKit.h>
@interface UIView (Extension)
@property(nonatomic,assign)CGFloat width;
@property(nonatomic,assign)CGFloat height;
@property(nonatomic,assign)CGFloat x;
@property(nonatomic,assign)CGFloat y;
@property(nonatomic,assign)CGFloat centerX;
@property(nonatomic,assign)CGFloat centerY;
@property (nonatomic, assign) CGSize size;
@end
//--------.m
//#import "UIView+Extension.h"
//@implementation UIView (Extension)
- (void)setSize:(CGSize)size
{
CGRect frame = self.frame;
frame.size = size;
self.frame = frame;
}
- (CGSize)size
{
return self.frame.size;
}
-(void)setX:(CGFloat)x
{
CGRect frame=self.frame;
frame.origin.x=x;
self.frame=frame;
}
-(void)setY:(CGFloat)y
{
CGRect frame=self.frame;
frame.origin.y=y;
self.frame=frame;
}
-(void)setWidth:(CGFloat)width
{
CGRect frame=self.frame;
frame.size.width=width;
self.frame=frame;
}
-(void)setHeight:(CGFloat)height
{
CGRect frame=self.frame;
frame.size.height=height;
self.frame=frame;
}
-(CGFloat)x
{
return self.frame.origin.x;
}
-(CGFloat)y
{
return self.frame.origin.y;
}
-(CGFloat)width
{
return self.frame.size.width;
}
-(CGFloat)height
{
return self.frame.size.height;
}
-(CGFloat)centerX
{
return self.center.x;
}
-(CGFloat)centerY
{
return self.center.y;
}
-(void)setCenterX:(CGFloat)centerX
{
CGPoint center = self.center;
center.x = centerX;
self.center = center;
}
-(void)setCenterY:(CGFloat)centerY
{
CGPoint center = self.center;
center.y = centerY;
self.center = center;
}
@end
