label上添加斜线

   CGRect size = [self widthOfTextFieldWithStr:[NSString stringWithFormat:@"%@", model.raiseAmt]]; 

    

    CAShapeLayer *shapeLayer = [[CAShapeLayer alloc] initWithLayer:_priceL.layer];

    shapeLayer.lineWidth = 1.0;

    shapeLayer.strokeColor = [UIColor redColor].CGColor;

    shapeLayer.fillColor = [UIColor clearColor].CGColor;

    

    

    UIBezierPath *path = [[UIBezierPath alloc] init];

    

    [path moveToPoint:CGPointMake(0, 3)];

    [path addLineToPoint:CGPointMake(size.size.width+3, self.priceL.frame.size.height-5)];

    

    shapeLayer.path = path.CGPath;

    

    [_priceL.layer addSublayer:shapeLayer];

- (CGRect)widthOfTextFieldWithStr:(NSString *)str {

    CGRect size = [str boundingRectWithSize:CGSizeMake(kScreenW, heightEx(60)) options:NSStringDrawingUsesFontLeading | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingTruncatesLastVisibleLine attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:17]} context:nil];

    return size;

}