Question

我有一个收藏夹视图。如果用户签到一个与他在一起的地方和朋友，则将在其中显示用户名。我将用户名用作TextView，并且为2种类型的文本（朋友和签到）分配了URL。它仅需解决一个问题就可以正常工作。

当用户点击链接时，我无法找到获取IndexPath的方法。它将发送到链接并触发函数，但无法获取indexPath。我到处看，但没有相关文档。永远在您的债务中寻求帮助，我为此一直在苦苦挣扎。

这是使用户名显示2个链接的功能：

  //GET THE INDEX PATH FOR ASSIGNMENT TO THE LINKS ??
    func assignNameFriendsAndCheckIn(name: String, checkIn: String, friends: String, cellName: UITextView) {

        let nameSurname = name
        let checkIn = checkIn
        var string = name
        let friendsString = friends

        string = "\(nameSurname)\(checkIn)\(friendsString)"

        let attributedString = NSMutableAttributedString(string: string)

        attributedString.addAttribute(NSAttributedString.Key.font, value: UIFont.boldSystemFont(ofSize: 14), range: (string as NSString).range(of: nameSurname))

        attributedString.addAttribute(NSAttributedString.Key.font, value: UIFont.systemFont(ofSize: 11), range: (string as NSString).range(of: checkIn))
        attributedString.addAttribute(NSAttributedString.Key.font, value: UIFont.systemFont(ofSize: 11), range: (string as NSString).range(of: friendsString))

        attributedString.addAttribute(NSAttributedString.Key.link, value: "checkIn", range: (string as NSString).range(of: checkIn))
        cellName.linkTextAttributes = [NSAttributedString.Key.foregroundColor:UIColor.black, NSAttributedString.Key.font: UIFont.systemFont(ofSize: 11)]
        attributedString.addAttribute(NSAttributedString.Key.link, value: "friends", range: (string as NSString).range(of: friendsString))
        cellName.linkTextAttributes = [NSAttributedString.Key.foregroundColor:UIColor.black, NSAttributedString.Key.font: UIFont.systemFont(ofSize: 11)]

        cellName.attributedText = attributedString
    }

这就是我捕捉链接的方式：

func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {

    if URL.absoluteString == "checkIn" {
        print("Check In")
        return true
    } else if URL.absoluteString == "friends" {
        print("Friends")
        return true
    } else {
        print("No Urls set")
        return false
    }

}

Answer 1

基于Larme给我的建议，我想到了这一点，并且它可行。

在didSelectRow中，我分配了一个轻击手势，然后使用链接创建了NSAttributedString。在第二部分中，我将在collectionView中检索手势点并获取indexPath。现在将分配动作。因为第一次单击将在String而不是Label上，所以indexPath将被分配一个延迟。所以我要延迟DispatchQueue的分配：

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionCell", for: indexPath) as! CollectionCell
    cell.nameSurname.delegate = self

    ................................................

    cell.nameSurname.isUserInteractionEnabled = true
    cell.nameSurname.tag = (indexPath.section * 100) + indexPath.item
    let tapName : UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(didTapName))
    cell.nameSurname.addGestureRecognizer(tapName)
    tapName.delegate = self

    assignNameLocationAndCheckIn(name: nameSurname, checkIn: checkIn, city: city, date: date, friends: friendsString, cellName: cell.nameSurname, postID: cell.postID)
}

这是用于计算indexPath的函数（urlIndexPath只是一个变量）：

@objc func didTapName(sender: UITapGestureRecognizer) {
        let pointInCollectionView = sender.location(in: collectionView)
        let indexPath = collectionView?.indexPathForItem(at: pointInCollectionView)
        urlIndexPath = indexPath!.item
        print("Name was tapped: \(indexPath!.item) : \(posts[(indexPath?.row)!].postID!)")
    }

最后我正在使用indexPath：

//MARK: 
    func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {

        if URL.absoluteString == "checkIn" {
            print("Check In")
            checkInText()
            return true
        } else if URL.absoluteString == "friends" {
            print("Friends")
            tagFriends()
            return true
        } else {
            print("No Urls set")
            return false
        }

    }

    //MARK: 
    func checkInText() {
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
            print("Send to: \(self.urlIndexPath)")
        }

    }

    //MARK: 
    func tagFriends() {
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
            print("Send to Friends: \(self.urlIndexPath)")
        }

    }

获取IndexPath for-UITextView应该与indexPath上的URL交互

1 个答案: