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。
//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:
@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:
@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
时间: 2024-10-31 04:05:32