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iOS 10.3
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使用
NSStrikethroughStyleAttributeName添加刪除線失效
添加刪除線經(jīng)常用在商品原價情形下技潘，使用NSStrikethroughStyleAttributeName添加刪除線在 iOS10.3之前沒什么問題笼平，結果出來一個奇葩的版本10.3（10.3.1依然未解決這個 bug），刪除線渲染不出來豆巨。
目前已知的有效解決方案如下：
方案1：（推薦）
Adding a
NSBaselineOffsetAttributeName, as explained here, to the attributed string brings back the strikethrough line. OverridingdrawText:in:can be slow especially on Collection View or Table View Cells.
方案2：（不推薦）
I make custom UILabel class and override drawText
function, it works forNSStrikethroughStyleAttributeName
attribute. But its not support multiple line texts in simple string
.
/// This UILabel subclass accomodates conditional fix for NSAttributedString rendering broken by Apple in iOS 10.3
final class PriceLabel: UILabel {
override func drawText(in rect: CGRect) {
guard let attributedText = attributedText else {
super.drawText(in: rect)
return
}
if #available(iOS 10.3, *) {
attributedText.draw(in: rect)
} else {
super.drawText(in: rect)
}
}
}
