replace NSTextAttachment that include an image to String - swift

Question

Before, I changed specific strings to NSTextAttachment that include image to display custom emoticon.
String to NSTextAttachment code
{
guard
let original = self.attributedText
else { return }
let pattern = "\\[img src=(\\w+)\\]"
do{
let regex = try NSRegularExpression(pattern: pattern, options: [])
let matches = regex.matches(in: original.string, options : [], range : NSMakeRange(0, original.string.characters.count))
let attributeString = NSMutableAttributedString(attributedString: original)
for match in matches.reversed(){
let emoticonString = attributeString.attributedSubstring(from: match.rangeAt(1)).string
if let emoticonAndroid = Emoticon(rawValue: emoticonString),
let image = UIImage(named : "\(emoticonAndroid.convertFromAndroid().rawValue)_000"){
image.accessibilityIdentifier = emoticonAndroid.rawValue
let attributedImage = NSTextAttachment()
attributedImage.image = image
attributedImage.bounds = CGRect(x: 0, y: -8, width: 25, height: 25)
attributeString.beginEditing()
attributeString.replaceCharacters(in: match.rangeAt(0), with: NSAttributedString(attachment: attributedImage))
attributeString.endEditing()
}
}
self.attributedText = attributeString
}catch{
return
}
}
but, I need to replace NSTextAttachment to string to send message.
I used NSMutableAttributedString.replaceCharacters(in:with:) method. but, It can work with only one emoticon image.
one emoticon
two emoticons or more
how can I fix it?
NSTextAttachment to String code
{
if let original = self.attributedText{
let attributeString = NSMutableAttributedString(attributedString: original)
original.enumerateAttribute(NSAttachmentAttributeName, in: NSMakeRange(0, original.length), options: [], using: { attribute, range, _ in
if let attachment = attribute as? NSTextAttachment,
let image = attachment.image{
let str = "[img src=\(image.accessibilityIdentifier!)]"
attributeString.beginEditing()
attributeString.(in: range, with: str)
attributeString.endEditing()
}
})
self.attributedText = attributeString
return attributeString.string
}else{
return nil
}
}

Answer 1

Umm.. I solved this problem.
First : Count number of NSTextAttachment
var count = 0
self.attributedText.enumerateAttribute(NSAttachmentAttributeName, in : NSMakeRange(0, self.attributedText.length), options: [], using: { attribute, range, _ in
if let attachment = attribute as? NSTextAttachment,
let image = attachment.image{
count = count + 1
}
})
return count
Second : Replace NSTextAttachment with String and calculate the changed range. <- Repeat
for i in 0..<self.countOfNSTextAttachment(){
let attributedString = NSMutableAttributedString(attributedString: self.attributedText)
var count = 0
attributedString.enumerateAttribute(NSAttachmentAttributeName, in : NSMakeRange(0, attributedString.length), options: [], using: { attribute, range, _ in
if let attachment = attribute as? NSTextAttachment,
let image = attachment.image{
let str = "[img src=\(image.accessibilityIdentifier!)]"
if count == 0{
attributedString.beginEditing()
attributedString.replaceCharacters(in: range, with: NSAttributedString(string : str))
attributedString.endEditing()
self.attributedText = attributedString
}else{
return
}
count = count + 1
}
})
}
return self.attributedText.string
Result : result
Perfect!!