我有一个集合视图。将显示用户名内部,以及他登记到某个地方的朋友和他的朋友。我使用用户名作为TextView,我正在为2种类型的文本(朋友和checkIn)分配URL。只有一个问题,它应该工作。
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我无法获取indexPath。我到处看,但没有关于它的文件。永远在你的债务中有点帮助,我一直在苦苦挣扎。
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
}
这就是我抓住链接的方式:
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
}
}
根据Larme给我的建议,我想出了这个,并且它有效。
在didSelectRow中,我正在分配一个轻击手势,然后我用链接创建NSAttributedString。在第二部分中,我将在collectionView中检索手势点并获取indexPath。现在将分配操作。因为第一次单击将在String而不是Label上,所以将为indexPath分配延迟。所以我用DispatchQueue推迟了作业:
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)
}
这是计算indexPath的函数(url IndexPath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!)")
}
最后我使用的是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)")
}
}