第一天06-封装frame的修改

// UIView + LYExtension.h
// Created by YoungLee on **/**/**
// Copyright (c) **** YoungLee.All rights reserved.

#import <UIKit/UIKit.h>

@interface UIView(LYExtension)

// 在分类中声明@property，只会生成方法的声明，不会生成方法的实现。
@property(nonatomic, assign)CGSize size;
@property(nonatomic, assign) CGFloat width;
@property(nonatomic, assign) CGFloat height;
@property(nonatomic, assign) CGFloat x;
@property(nonatomic, assign) CGFloat y;

@end

// UIView + LYExtension.m
// Created by YoungLee on **/**/**
// Copyright (c) **** YoungLee.All rights reserved.
#import "UIView + LYExtenson.h"

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

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

- (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)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;
}