更新时间:2022-08-20 14:27:29
关于UIView的位置都会遇到,一般需要改变UIView的位置,需要先获取原有的frame位置,然后在frame上面修改,有的时候如果只是改变了一下垂直方向的位置,宽度和高度的一种,这种写法很麻烦。下面两种写法第二种明显更简单,如果需要实现第二种方法就需要扩展UIView。
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//1 CGRect frame=self.testView.frame; frame.size.width=120; self.testView.frame=frame; [self printFrame]; //2 self.testView.width=120; [self printFrame]; |
扩展定义:
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@ interface UIView (ReSize)
@property (nonatomic, assign) CGSize size; @property (nonatomic,assign) CGFloat x; @property (nonatomic,assign) CGFloat y; @property (nonatomic, assign) CGFloat top; @property (nonatomic, assign) CGFloat bottom; @property (nonatomic, assign) CGFloat left; @property (nonatomic, assign) CGFloat right; @property (nonatomic, assign) CGFloat centerX; @property (nonatomic, assign) CGFloat centerY; @property (nonatomic, assign) CGFloat width; @property (nonatomic, assign) CGFloat height; @end |
扩展实现:
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@implementation UIView (ReSize) - (CGSize)size; { return [self frame].size;
} - ( void )setSize:(CGSize)size;
{ CGPoint origin = [self frame].origin;
[self setFrame:CGRectMake(origin.x, origin.y, size.width, size.height)];
} -(CGFloat)x{ CGRect frame=[self frame];
return frame.origin.x;
} -( void )setX:(CGFloat)x{
CGRect frame=[self frame];
frame.origin.x=x;
[self setFrame:frame];
} -(CGFloat)y{ CGRect frame=[self frame];
return frame.origin.y;
} -( void )setY:(CGFloat)y{
CGRect frame=[self frame];
frame.origin.y=y;
return [self setFrame:frame];
} - (CGFloat)left; { return CGRectGetMinX([self frame]);
} - ( void )setLeft:(CGFloat)x;
{ CGRect frame = [self frame];
frame.origin.x = x;
[self setFrame:frame];
} - (CGFloat)top; { return CGRectGetMinY([self frame]);
} - ( void )setTop:(CGFloat)y;
{ CGRect frame = [self frame];
frame.origin.y = y;
[self setFrame:frame];
} - (CGFloat)right; { return CGRectGetMaxX([self frame]);
} - ( void )setRight:(CGFloat)right;
{ CGRect frame = [self frame];
frame.origin.x = right - frame.size.width;
[self setFrame:frame];
} - (CGFloat)bottom; { return CGRectGetMaxY([self frame]);
} - ( void )setBottom:(CGFloat)bottom;
{ CGRect frame = [self frame];
frame.origin.y = bottom - frame.size.height;
[self setFrame:frame];
} - (CGFloat)centerX; { return [self center].x;
} - ( void )setCenterX:(CGFloat)centerX;
{ [self setCenter:CGPointMake(centerX, self.center.y)];
} - (CGFloat)centerY; { return [self center].y;
} - ( void )setCenterY:(CGFloat)centerY;
{ [self setCenter:CGPointMake(self.center.x, centerY)];
} - (CGFloat)width; { return CGRectGetWidth([self frame]);
} - ( void )setWidth:(CGFloat)width;
{ CGRect frame = [self frame];
frame.size.width = width;
[self setFrame:CGRectStandardize(frame)];
} - (CGFloat)height; { return CGRectGetHeight([self frame]);
} - ( void )setHeight:(CGFloat)height;
{ CGRect frame=[self frame];
frame.size.height = height;
[self setFrame:CGRectStandardize(frame)];
} @end |
项目源代码地址:https://github.com/SmallElephant/iOS-FEViewReSize
本文转自Fly_Elephant博客园博客,原文链接:http://www.cnblogs.com/xiaofeixiang/p/5119677.html,如需转载请自行联系原作者