UIView中frame的封装(方便使用x,y,width,height,center,size等)

　　新建一个继承自UIView的分类

　　在.h文件中写代码：

1 @property (assign, nonatomic)CGSize size;2 @property (assign, nonatomic)CGFloat width;3 @property (assign, nonatomic)CGFloat height;4 @property (assign, nonatomic)CGFloat x;5 @property (assign, nonatomic)CGFloat y;6 @property (assign, nonatomic)CGFloat centerX;7 @property (assign, nonatomic)CGFloat centerY;

　　在.m文件中

 1 - (void)setSize:(CGSize)size 2 { 3     CGRect frame = self.frame; 4     frame.size = size; 5     self.frame = frame; 6 } 7 - (CGSize)size 8 { 9     return self.frame.size;10 }11 12 - (void)setWidth:(CGFloat)width13 {14     CGRect frame = self.frame;15     frame.size.width = width;16     self.frame = frame;17 }18 - (CGFloat)width19 {20     return self.frame.size.width;21 }22 - (void)setHeight:(CGFloat)height23 {24     CGRect frame = self.frame;25     frame.size.height = height;26     self.frame = frame;27 }28 - (void)setX:(CGFloat)x29 {30     CGRect frame = self.frame;31     frame.origin.x = x;32     self.frame = frame;33 }34 - (void)setY:(CGFloat)y35 {36     CGRect frame = self.frame;37     frame.origin.y = y;38     self.frame = frame;39 }40 41 - (CGFloat)height42 {43     return self.frame.size.height;44 }45 - (CGFloat)x46 {47     return self.frame.origin.x;48 }49 - (CGFloat)y50 {51     return self.frame.origin.y;52 }53 - (void)setCenterX:(CGFloat)centerX54 {55     CGPoint center = self.center;56     center.x = centerX;57     self.center = center;58 }59 - (void)setCenterY:(CGFloat)centerY60 {61     CGPoint center = self.center;62     center.y = centerY;63     self.center = center;64 }65 - (CGFloat)centerX66 {67     return self.center.x;68 }69 - (CGFloat)centerY70 {71     return self.center.y;72 }

　　如果把它导入放到PCH文件中，则整个项目所有文件夹都可以直接使用，比如想设置某个控件的尺寸：

button.x　　button.y　　button.width label.centerX　　label.size等等，所以上面封装过的属性都可以直接点出来

更有一种逍遥，浑然忘我，与大自然交融的境界令人心弛神往。