let attributedText = NSAttributedString(string: "内容", attributes: [NSStrikethroughStyleAttributeName: 1])
let contentLabel = UILabel()
contentLabel.attributedText = attributedText
// let attr = NSMutableAttributedString(string: content!)
// attr.addAttribute(NSStrikethroughStyleAttributeName, value: NSNumber(integer: 1), range: NSMakeRange(0, 1))
// titleLabel.attributedText = attr
// titleLabel.sizeToFit()