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如何NSTextAttachment在 中的特定位置插入NSAttributedString？

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let attributedString = NSAttributedString(attachment: textAttachment)
let mutableAttributedText = NSMutableAttributedString(attributedString: textView.attributedText)
mutableAttributedText.replaceCharacters(in: selectedRange, with: attributedString)
textView.attributedText = mutableAttributedText
于 2017-04-13T14:46:00.803 回答