How to get Cell data when I click on button which is on viewForFooterInSection in swift

Question

I am new in swift and I am facing problem when I click on button which is in viewForFooterInSection

my code is like this

In viewForFooterInSection

    func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
            let footerview = Bundle.main.loadNibNamed("TimeSheetFooterTableViewCell", owner: self, options: nil)?.first as! TimeSheetFooterTableViewCell
            
            let dictFeeStats = arrFinancialYears[section] as? [String:Any]
            footerview.lblTimeSheetFooterID.text = dictFeeStats?["staff_timesheet_id"] as? String            

            footerview.btnAccept.tag = section
            footerview.btnAccept.addTarget(self, action: #selector(btnAcceptClick), for: .touchUpInside)
            
            return footerview
        }

On Button Click

 @objc func btnAcceptClick(_ sender: UIButton)
    {
        let index = IndexPath(row: sender.tag, section: 0)
        let cell: TimeSheetFooterTableViewCell = self.tblview.cellForRow(at: index) as! TimeSheetFooterTableViewCell
        let comment = cell.lblTimeSheetFooterID.text
        
        print("buttonPressed ! \(sender.tag)")
    }

How can I get TimeSheetFooterTableViewCell value in comment variable. Thanks in Advance!

score 1 · Answer 1 · answered Aug 16 '20 at 15:17

1

You can add a closure in TimeSheetFooterTableViewCell that accepts a string. When button is tapped, call that closure with the textview's text.

var acceptButtonTapped: ((String?) -> ())?

@IBAction func btnAcceptClick(_ sender: UIButton) {
    acceptButtonTapped?(txtview.text)
}

In your tableView(_ tableView: UITableView, viewForFooterInSection, get the text from the callback.

footerview.acceptButtonTapped = { text in
    print(text)
}

answered Aug 16 '20 at 15:17

Jithin

913
5
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Your code is not working when I return return footerview.contentView – Mujtaba Aug 16 '20 at 16:57
Why do you return footerview.contentview? – Jithin Aug 16 '20 at 17:05
because on textview done click Footer view got disappears – Mujtaba Aug 16 '20 at 17:09
why does it disappear? anything else happening inside the button action and `viewForFooterInSection` method? – Jithin Aug 16 '20 at 17:44

Alexander Nikolaychuk · Answer 2 · 2020-08-16T15:23:52.107

0

usually the user interactions placed in the cell. And after tap, tapped cell informs the tablewView through callbacks.

This a cell code:

   class TimeSheetFooterTableViewCell: UITableViewCell {
    
    var btnAccept: UIButton!
    var lblTimeSheetFooterID: UITextView!
    
    override func awakeFromNib() {
        super.awakeFromNib()
        btnAccept = UIButton()
        btnAccept.addTarget(self, action: #selector(btnAcceptClick), for: .touchUpInside)
    }
    
    //Callback for communication between cell and tableView
    var btnDidTap: ((String) -> Void)?
    
    @objc func btnAcceptClick(_ sender: UIButton) {
        btnDidTap?(lblTimeSheetFooterID.text ?? "")
    }
    
    

    
}

This is a footer function in tableView delegate:

func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
    let footerview = Bundle.main.loadNibNamed("TimeSheetFooterTableViewCell", owner: self, options: nil)?.first as! TimeSheetFooterTableViewCell
    
    let dictFeeStats = arrFinancialYears[section] as? [String: Any]
    
    footerview.btnDidTap = { comment in
        print("section number: \(section) DID TAP!")
    }
    
    return footerview
}

edited Aug 16 '20 at 15:23

answered Aug 16 '20 at 15:12

Alexander Nikolaychuk

624
1
4
10

how can I get data of textview on button click? – Mujtaba Aug 16 '20 at 15:15
I updated the answer. if lblTimeSheetFooterID is your UITextField or UILabel it should work for you – Alexander Nikolaychuk Aug 16 '20 at 15:24
Not working this method is not getting called on button click footerview.btnDidTap = { comment in print("section number: \(section) DID TAP!") } – Mujtaba Aug 16 '20 at 16:19
Can you share your existed code? I think you forgot awakeFromNib function like in my example. – Alexander Nikolaychuk Aug 16 '20 at 17:00
Also your TimeSheetFooterTableViewCell should be a subclass of UITableViewHeaderFooterView . In another way, it shouldn't work – Alexander Nikolaychuk Aug 16 '20 at 17:01

Frankenstein · Answer 3 · 2020-08-16T15:21:50.400

0

Use footerView(forSection:) method instead of cellForRow(at:).

Replace:

let cell: TimeSheetFooterTableViewCell = self.tblview.cellForRow(at: index) as! TimeSheetFooterTableViewCell

With:

let footerView = tblview.footerView(forSection: sender.tag) as! TimeSheetFooterTableViewCell

edited Aug 16 '20 at 15:21

answered Aug 16 '20 at 15:18

Frankenstein

15,732
4
22
47

showing me this error. Incorrect argument label in call (have 'forSection:', expected 'at:') – Mujtaba Aug 16 '20 at 15:21
I missed a bit. Try again, I've just updated the method. – Frankenstein Aug 16 '20 at 15:22
Cast from 'UITableViewHeaderFooterView?' to unrelated type 'TimeSheetFooterTableViewCell' always fails – Mujtaba Aug 16 '20 at 15:24
Can you please check I have created .xib for TimeSheetFooterTableViewCell – Mujtaba Aug 16 '20 at 15:29
`TimeSheetFooterTableViewCell` should be of type `UITableViewHeaderFooterView`. It won't work otherwise. Make sure `class TimeSheetFooterTableViewCell: UITableViewHeaderFooterView {` – Frankenstein Aug 16 '20 at 16:05
Can't I convert it into cell? – Mujtaba Aug 16 '20 at 16:09
It should have been possible. But `footView(forSection:)` creates an instance of `UITableViewHeaderFooterView` while `TimeSheetFooterTableViewCell` is not inherited from `UITableViewHeaderFooterView`. You see why this won't work here right? Why don't you make a separate xib with the same layout, only difference being the the class would be inherited from `UITableViewHeaderFooterView`. – Frankenstein Aug 16 '20 at 16:29

How to get Cell data when I click on button which is on viewForFooterInSection in swift

3 Answers3