iOS创建带删除线和价钱符号的Label

效果显示如下:

只需要子类化Label,重写DrawRect()方法即可:

#import "MyLabel.h"

@implementation MyLabel

- (instancetype)initWithFrame:(CGRect)frame{

    self = [super initWithFrame:frame];
    if (self) {

    }
    return self;
}

//重写UILabel的drawRect类
- (void)drawRect:(CGRect)rect{

    // 删除线
    if (_isDelete) {

        UIFont *font = [UIFont systemFontOfSize:self.font.pointSize];
        CGSize size = CGSizeMake(320, 2000);

        // 取得高度
        CGRect labelRect = [self.text boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin attributes:[NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName] context:nil];
        // 取得上下文
        CGContextRef c = UIGraphicsGetCurrentContext();
        // 设置删除线颜色
        CGContextSetStrokeColorWithColor(c, [UIColor redColor].CGColor);
        // 设置线宽
        CGContextSetLineWidth(c, 1);
        CGContextBeginPath(c);
        CGFloat halfWayUp = rect.size.height/2 + rect.origin.y;
        CGContextMoveToPoint(c, rect.origin.x , halfWayUp );//开始点
        CGContextAddLineToPoint(c, rect.origin.x + labelRect.size.width, halfWayUp);//结束点
        CGContextStrokePath(c);
    }

    if (_isRMB){
        UIFont *font = [UIFont systemFontOfSize:self.font.pointSize];
        UIFont *fuhaofont = [UIFont systemFontOfSize:20];
        UIColor *color = [UIColor redColor];
        CGSize size = CGSizeMake(320,2000);
        CGRect labelRect = [self.text boundingRectWithSize:size options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)  attributes:[NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName] context:nil];
        NSString *fuhao = @"￥";
        CGContextRef c = UIGraphicsGetCurrentContext();
        CGContextSetStrokeColorWithColor(c, [UIColor redColor].CGColor);
        [fuhao drawAtPoint:CGPointMake(rect.size.width - labelRect.size.width - 100, 5) withAttributes:@{NSFontAttributeName:fuhaofont,NSForegroundColorAttributeName:color}];
        CGContextStrokePath(c);
    }

    // label的字体一直显示不出来,请注意一定要调用super
    [super drawRect:rect];

}