ios - 从 textView 中的字符索引获取单词(iOS)

在点击 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，但我没有成功抓取完整的单词，它似乎只在我点击第一个字母时才有效。

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. 
                }
            }
        }
    }
}

我总是能够打印出字符索引和被点击的字符，但是，捕获单词是个问题。如何每次都从带有字符索引的 textView 中获取整个单词？

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Best Answer-推荐答案

问题显然源于我在获取位置后设置的 .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

关于ios - 从 textView 中的字符索引获取单词(iOS)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41860197/