如何在NSAttributedString中刪除和替換NSTextAttachment

Question

我有一個可變的屬性字符串，我添加了圖像文本附件。

NSMutableAttributedString* attributedString = [_textField.attributedText mutableCopy];

NSMutableDictionary* dict = [_homeFeedCommentsViewController.inputData.array_extraElements objectAtIndex:0];

NSNumber* indexObject = [NSNumber numberWithUnsignedLong:attributedString.length];

[dict setObject:indexObject forKey:@"LocationIndex"];

[attributedString insertAttributedString:imageAsAttributedString atIndex:attributedString.length];

我現在如何獲取該文本附件並將其替換為圖像應位於文本正文中的位置的字符串？

Answer 1

只需告訴文本存儲，您更新了相應附件字符范圍的屬性：

textStorage.edited([.EditedAttributes], range: range, changeInLength: 0)