iOS 纯代码界面适配UIView扩展类

下方代码为UIView的扩展分类，在纯代码界面适配中可以直接使用UIView控件的x,y,width,height等属性进行设置。

#import <UIKit/UIKit.h>

@interface UIView (FrameLayout)

@property CGFloat top;
@property CGFloat bottom;
@property CGFloat left;
@property CGFloat right;

@property CGFloat centerX;
@property CGFloat centerY;

@property CGFloat height;
@property CGFloat width;

@end

#import "UIView+FrameLayout.h"

@implementation UIView (FrameLayout)

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

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

- (CGFloat)bottom {
    return self.top + self.height;
}

- (void)setBottom:(CGFloat)bottom {
    self.top = bottom - self.height;
}

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

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

- (CGFloat)right {
    return self.left + self.width;
}

- (void)setRight:(CGFloat)right {
    self.left = right - self.width;
}

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

- (void)setCenterX:(CGFloat)centerX {
    self.center = CGPointMake(centerX, self.centerY);
}

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

- (void)setCenterY:(CGFloat)centerY {
    self.center = CGPointMake(self.centerX, centerY);
}

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

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

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

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

@end