问题
I couldn't find an answer to this problem maybe because my code is different I don't know but in the end, I didn't found an answer, collectionView keep complaining about UICollectionViewFlowLayoutBreakForInvalidSizes and wants me to catch the err with symbolic breakpoint but I even with the breakpoint debugger not showing any information about the err, here is how I'm implementing collectionView if anyone could find the problem in my code please let me know
The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7f86d50a9b70>, and it is attached to <UICollectionView: 0x7f86d4944000; frame = (0 61; 414 317); clipsToBounds = YES; gestureRecognizers = <NSArray: 0x600002e397a0>; layer = <CALayer: 0x60000201b120>; contentOffset: {-5, 1169.5}; contentSize: {404, 1557.1875}; adjustedContentInset: {5, 5, 5, 5}; layout: <UICollectionViewFlowLayout: 0x7f86d50a9b70>; dataSource: <DELEVARE___ÿØŸäŸÑŸäŸÅÿ±Ÿä.DriverChat: 0x7f86d4849c00>>. 2021-01-16 17:57:24.377551+0200 DELEVARE - ديليفري[63548:1297733] Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.
var collectionView: UICollectionView = {
let layout = UICollectionViewFlowLayout()
layout.scrollDirection = .vertical
let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
cv.alwaysBounceVertical = true
cv.contentInset = UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5)
cv.backgroundColor = .white
cv.register(driverMessagesCell.self, forCellWithReuseIdentifier: "driverMessagesCell")
cv.layoutIfNeeded()
cv.translatesAutoresizingMaskIntoConstraints = false
return cv
}()
override func viewDidLoad() {
super.viewDidLoad()
collectionView.delegate = self
collectionView.dataSource = self
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return messages.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "driverMessagesCell", for: indexPath) as! driverMessagesCell
cell.messageTextView.text = messages[indexPath.item].text
cell.profileImg.image = messages[indexPath.row].image
let messagetext = messages[indexPath.item].text
let size = CGSize(width: 250, height: 1000)
let options = NSStringDrawingOptions.usesFontLeading.union(.usesLineFragmentOrigin)
let estmatedFrame = NSString(string: messagetext).boundingRect(with: size, options: options, attributes: [ NSAttributedString.Key.font: UIFont.systemFont(ofSize: 18)], context: nil)
let Messages = messages[indexPath.item]
if Messages.isSender.boolValue == false{
cell.messageTextView.frame = CGRect(x: 48 + 8, y: 0, width: estmatedFrame.width + 16, height: estmatedFrame.height + 20)
cell.textBubbleView.frame = CGRect(x: 48 - 10, y: -4, width: estmatedFrame.width + 16 + 8 + 16, height: estmatedFrame.height + 20 + 4)
cell.bubbleImg.image = driverMessagesCell.grayBubble
cell.bubbleImg.tintColor = UIColor(white: 0.95, alpha: 1)
cell.messageTextView.textColor = .darkGray
cell.profileImg.isHidden = false
cell.url = orderData?.userImg
} else {
cell.messageTextView.frame = CGRect(x: view.frame.width - estmatedFrame.width - 16 - 16 - 8, y: 0, width: estmatedFrame.width + 16, height: estmatedFrame.height + 20)
cell.textBubbleView.frame = CGRect(x: view.frame.width - estmatedFrame.width - 16 - 8 - 16 - 10, y: -4, width: estmatedFrame.width + 16 + 8 + 10, height: estmatedFrame.height + 20 + 6)
cell.bubbleImg.image = driverMessagesCell.redBubble
cell.bubbleImg.tintColor = UIColor.delevareColor.withAlphaComponent(0.95)
cell.messageTextView.textColor = .white
cell.profileImg.isHidden = true
}
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
return UIEdgeInsets(top: 8, left: 0, bottom: 0, right: 0)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let messagetext = messages[indexPath.item].text
let size = CGSize(width: 250, height: 1000)
let options = NSStringDrawingOptions.usesFontLeading.union(.usesLineFragmentOrigin)
let estmatedFrame = NSString(string: messagetext).boundingRect(with: size, options: options, attributes: [ NSAttributedString.Key.font: UIFont.systemFont(ofSize: 16)], context: nil)
return CGSize(width: view.safeAreaLayoutGuide.layoutFrame.width, height: estmatedFrame.height + 20)
}
来源：https://stackoverflow.com/questions/65751634/how-to-solve-uicollectionviewflowlayoutbreakforinvalidsizes