How to move up collection view controller when keyboard appears?

Question

I have a collection view I made in storyboard and a container view with text field constrained to the bottom of the view programmatically. However, when I show the keyboard the collection view stays hidden underneath and I'm not sure how to. I looked and most answers say to use self.view.frame.origin.y in the keyboard notification listener but that's hasn't worked for me.

my keyboard notification code

    @objc func keyboardWillShow(notification: NSNotification) {
        let keyboardFrame = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue
        let duration = ((notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue)!
        
        containerViewbottomAnchor?.constant = -keyboardFrame!.height

        
        UIView.animate(withDuration: duration) {
            self.view.layoutIfNeeded()
        }
        
    }

first image is the normal chat and second is the max view you ca see when the keyboard is shown. the container view contains the textfield and button which I added programmatically. they are within an input accessory view to update their positions when the keyboard comes up.

and log `keyboardFrame` in this function ... make sure you are getting height — Jawad Ali, Jun 13 '20 at 06:09
can you check with this solution https://stackoverflow.com/a/56802182/7301439 — Saifan Nadaf, Jun 13 '20 at 08:46
i edited the original to show some more pictures of the container view — Christian Grinling, Jun 13 '20 at 16:13

score 0 · Answer 1 · answered Jun 13 '20 at 10:21

0

Have you tried this solution? https://stackoverflow.com/a/57438748/13042987

NotificationCenter.default.addObserver(self, selector: #selector(handleKeyboardWillShow), name: UIResponder.keyboardWillShowNotification, object: nil)


@objc func handleKeyboardWillShow(notification: Notification) {

        collectionView.scrollToItem(at: IndexPath(row: messagesList.count - 1, section: chatSection), at: .top, animated: false)
}

answered Jun 13 '20 at 10:21

Shapagat Bolat

29
6

'@objc func handleKeyboardDidShow() { if messages.count > 0 { let indexPath = NSIndexPath(item: messages.count - 1, section: 0) collectionView.scrollToItem(at: indexPath as IndexPath, at: .top, animated: true) } }' yeah this works for taking the user to the bottom but the keyboard still overlaps – Christian Grinling Jun 13 '20 at 16:08

score 0 · Accepted Answer · answered Jun 13 '20 at 20:45

0

I managed to fix it by changing to a UICollectionview controller class

answered Jun 13 '20 at 20:45

Christian Grinling

79
1
7

How to move up collection view controller when keyboard appears?

2 Answers2