从textView（iOS）中的字符索引获取单词

点击UITextVIew时，我试图获取点击发生的单词（使用放置在UITextVIew中的UITapGestureRecognizer）。我能够抓取所选字符的索引，但抓取完整单词并没有成功，它似乎只在我点击第一个字母时才起作用

func textTapped(_ tapGestureRecognizer: UITapGestureRecognizer){
    if let textView = textTapGestureRecognizer?.view as? UITextView {
        let layoutManager = textView.layoutManager
        var location: CGPoint = textTapGestureRecognizer!.location(in: textView)
        location.x -= textView.textContainerInset.left
        location.y -= textView.textContainerInset.top

        let characterIndex = layoutManager.characterIndex(for: location, in: textView.textContainer, fractionOfDistanceBetweenInsertionPoints: nil)
        if characterIndex < textView.textStorage.length {

            // print the character index successfully
            print("character index: \(characterIndex)")

            // print the character at the index successfully
            let myRange = NSRange(location: characterIndex, length: 1)
            let substring = (textView.attributedText.string as NSString).substring(with: myRange)
            print("character at index: \(substring)")

            let tapPosition: UITextPosition? = textView.closestPosition(to: location)
            //fetch the word at this position (or nil, if not available)
            if let textRange = textView.tokenizer.rangeEnclosingPosition(tapPosition!, with: .word, inDirection: 1) {
                if let tappedWord = textView.text(in: textRange) {
                    print("selected word :\(tappedWord)")
                    //This only prints when I seem to tap the first letter of word. 
                }
            }
        }
    }
}

func textTapped（uuTapGestureRecognitizer:UITapGestureRecognitizer）{
如果让textView=textTapGestureRecognizer？.view为？UITextView{
让layoutManager=textView.layoutManager
变量位置：CGPoint=texttapgesturecognizer！。位置（在：textView中）
location.x-=textView.textContainerSet.left
location.y-=textView.textContainerSet.top
让characterIndex=layoutManager.characterIndex（对于：位置，在：textView.textContainer中，插入点之间距离的分数：nil）
如果characterIndex

---

我总是能够打印出字符索引和被点击的字符，然而，抓住这个单词是个问题。如何每次使用字符索引从文本视图中抓取整个单词？

问题显然源于获取位置后设置的.x和.y值。我所要做的就是删除这些行：

location.x -= textView.textContainerInset.left
location.y -= textView.textContainerInset.top

---

如果没有其他内容，您可以将对

RangeEnclosuringPosition（）

的调用更改为粒度

.character

，然后获取单词的字符数组并向后搜索单词边界，然后向前搜索并自己构建范围。

。这是一个比我给出的你自己的答案好得多的解决方案。