iOS开发-很有用的UIView分类

很有用的UIView分类，可以用来方便访问视图坐标X,Y，中心点，宽度和高度等等

UIView+Category.h

#import <UIKit/UIKit.h>

IB_DESIGNABLE

@interface UIView (Category)
@property (nonatomic, assign)CGFloat x;
@property (nonatomic, assign)CGFloat y;
@property (nonatomic, assign)CGFloat width;
@property (nonatomic, assign)CGFloat height;
@property (nonatomic, assign)CGFloat centerX;
@property (nonatomic, assign)CGFloat centerY;
@property (nonatomic, assign)CGSize size;
@property(nonatomic, assign) IBInspectable CGFloat borderWidth;
@property(nonatomic, assign) IBInspectable UIColor *borderColor;
@property(nonatomic, assign) IBInspectable CGFloat cornerRadius;

/**
 *  水平居中
 */
- (void)alignHorizontal;
/**
 *  垂直居中
 */
- (void)alignVertical;
/**
 *  判断是否显示在主窗口上面
 *
 *  @return 是否
 */
- (BOOL)isShowOnWindow;

- (UIViewController *)parentController;
@end

UIView+Category.m

#import "UIView+Category.h"

@implementation UIView (Category)

- (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;
}

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

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

- (void)setCenterX:(CGFloat)centerX
{
    CGPoint center = self.center;
    center.x = centerX;
    self.center = center;
}

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

- (void)setCenterY:(CGFloat)centerY
{
    CGPoint center = self.center;
    center.y = centerY;
    self.center = center;
}

- (CGFloat)centerY
{
    return self.center.y;
}
- (void)alignHorizontal
{
    self.x = (self.superview.width - self.width) * 0.5;
}

- (void)alignVertical
{
    self.y = (self.superview.height - self.height) *0.5;
}

- (void)setBorderWidth:(CGFloat)borderWidth
{
    
    if (borderWidth < 0) {
        return;
    }
    self.layer.borderWidth = borderWidth;
}

- (void)setBorderColor:(UIColor *)borderColor
{
    self.layer.borderColor = borderColor.CGColor;
}

- (void)setCornerRadius:(CGFloat)cornerRadius
{
    self.layer.cornerRadius = cornerRadius;
    self.layer.masksToBounds = YES;
}

- (BOOL)isShowOnWindow
{
    //主窗口
    UIWindow *keyWindow = [UIApplication sharedApplication].keyWindow;

    //相对于父控件转换之后的rect
    CGRect newRect = [keyWindow convertRect:self.frame fromView:self.superview];
    //主窗口的bounds
    CGRect winBounds = keyWindow.bounds;
    //判断两个坐标系是否有交汇的地方，返回bool值
    BOOL isIntersects =  CGRectIntersectsRect(newRect, winBounds);
    if (self.hidden != YES && self.alpha >0.01 && self.window == keyWindow && isIntersects) {
        return YES;
    }else{
        return NO;
    }
}

- (CGFloat)borderWidth
{
    return self.borderWidth;
}

- (UIColor *)borderColor
{
    return self.borderColor;

}

- (CGFloat)cornerRadius
{
    return self.cornerRadius;
}

- (UIViewController *)parentController
{
    UIResponder *responder = [self nextResponder];
    while (responder) {
        if ([responder isKindOfClass:[UIViewController class]]) {
            return (UIViewController *)responder;
        }
        responder = [responder nextResponder];
    }
    return nil;
}


@end