关于frame的一些分类

#import <UIKit/UIKit.h>

@interface UIView (Extension)
@property (nonatomic, assign) CGFloat x;
@property (nonatomic, assign) CGFloat y;
@property (nonatomic, assign) CGFloat width;
@property (nonatomic, assign) CGFloat height;
@property (nonatomic, assign) CGSize size;
@property (nonatomic, assign) CGFloat centerX;
@property (nonatomic, assign) CGFloat centerY;

@end

#import "UIView+Extension.h"

@implementation UIView (Extension)

- (void)setX:(CGFloat)x{
    CGRect frame = self.frame;
    frame.origin.x = x;
    self.frame = frame;
}

- (CGFloat)x{
    return self.frame.origin.x;
}

- (void)setY:(CGFloat)y{
    CGRect frame = self.frame;
    frame.origin.y = y;
    self.frame = frame;
}

- (CGFloat)y{
    return self.frame.origin.y;
}

- (void)setWidth:(CGFloat)width{
    CGRect frame = self.frame;
    frame.size.width = width;
    self.frame = frame;
}

- (CGFloat)width{
    return self.frame.size.width;
}

- (void)setHeight:(CGFloat)height{
    CGRect frame = self.frame;
    frame.size.height = height;
    self.frame = frame;
}

- (CGFloat)height{
    return self.frame.size.height;
}

- (void)setCenterX:(CGFloat)centerX{
    CGPoint point = self.center;
    point.x = centerX;
    self.center = point;
}

- (CGFloat)centerX{
    return self.center.x;
}

- (void)setCenterY:(CGFloat)centerY{
    CGPoint point = self.center;
    point.y = centerY;
    self.center = point;
}

- (CGFloat)centerY{
    return self.center.y;
}

- (void)setSize:(CGSize)size{
    CGRect frame = self.frame;
    frame.size = size;
    self.frame = frame;
}

- (CGSize)size{
    return self.frame.size;
}

@end