Refresh certain row of UITableView based on Int in Swift

Question

I am a beginning developer in Swift, and I am creating a basic app that includes a UITableView. I want to refresh a certain row of the table using:

self.tableView.reloadRowsAtIndexPaths(paths, withRowAnimation: UITableViewRowAnimation.none)

and I want the row that will be refreshed to be from an Int named rowNumber

The problem is, I don't know how to do this and all the threads I've searched are for Obj-C

Any ideas?

Is there only one section? – Lyndsey Scott Jan 29 '15 at 03:27 — Lyndsey Scott, Jan 29 '15 at 03:27

score 219 · Accepted Answer · edited Dec 08 '16 at 14:19

219

You can create an NSIndexPath using the row and section number then reload it like so:

let indexPath = NSIndexPath(forRow: rowNumber, inSection: 0)
tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Top)

In this example, I've assumed that your table only has one section (i.e. 0) but you may change that value accordingly.

Update for Swift 3.0:

let indexPath = IndexPath(item: rowNumber, section: 0)
tableView.reloadRows(at: [indexPath], with: .top)

edited Dec 08 '16 at 14:19

Carmen

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answered Jan 29 '15 at 03:30

Lyndsey Scott

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if for particular section number of rows are going to be changed then ? @Lyndsey Scott – dip Aug 05 '15 at 10:00
@Lyndsey : Actually at first lets say i have 2 cells in that section of which i am going to reload, after reloading lets say i will have any (x) numbers of cells in that particular section, so my question is that in line of indexpath calculation, iam sure about the section but i am confused on numbers of rows, because it is crashing on change of number of rows **var indexPath = NSIndexPath(forRow: rowNumber, inSection: 0)** – dip Aug 06 '15 at 03:54
@dip you need to look at your tableView:numberOfRowsInSection: method algorithm to get that info... I'd recommend posting your question on the forum since it sounds like a specific issue you're having with your code... – Lyndsey Scott Aug 06 '15 at 08:24
Where to call this method? – Master AgentX Feb 27 '19 at 08:54

score 22 · Answer 2 · edited Mar 02 '17 at 07:40

For a soft impact animation solution:

Swift 3:

let indexPath = IndexPath(item: row, section: 0)
tableView.reloadRows(at: [indexPath], with: .fade)

Swift 2.x:

let indexPath = NSIndexPath(forRow: row, inSection: 0)
tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)

This is another way to protect the app from crashing:

Swift 3:

let indexPath = IndexPath(item: row, section: 0)
if let visibleIndexPaths = tableView.indexPathsForVisibleRows?.index(of: indexPath as IndexPath) {
    if visibleIndexPaths != NSNotFound {
        tableView.reloadRows(at: [indexPath], with: .fade)
    }
}

Swift 2.x:

let indexPath = NSIndexPath(forRow: row, inSection: 0)
if let visibleIndexPaths = tableView.indexPathsForVisibleRows?.indexOf(indexPath) {
   if visibleIndexPaths != NSNotFound {
      tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
   }
}

Still crashes for me even with the safety measure. – ScottyBlades Aug 12 '22 at 10:44 — ScottyBlades, Aug 12 '22 at 10:44

score 7 · Answer 3 · answered Apr 27 '18 at 05:36

7

Swift 4

let indexPathRow:Int = 0    
let indexPosition = IndexPath(row: indexPathRow, section: 0)
tableView.reloadRows(at: [indexPosition], with: .none)

answered Apr 27 '18 at 05:36

Neha

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Why you copy paste my answer ? – Hardik Thakkar Jan 05 '21 at 09:40
You had copied my answer, check date – Neha Jan 15 '21 at 07:57

score 4 · Answer 4 · answered Feb 05 '19 at 21:03

4

SWIFT 4.2

    func reloadYourRows(name: <anyname>) {
    let row = <your array name>.index(of: <name passing in>)
    let reloadPath = IndexPath(row: row!, section: 0)
    tableView.reloadRows(at: [reloadPath], with: .middle)
    }

answered Feb 05 '19 at 21:03

Legend_ 33

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6

score 3 · Answer 5 · answered Jan 11 '17 at 06:02

In Swift 3.0

let rowNumber: Int = 2
let sectionNumber: Int = 0

let indexPath = IndexPath(item: rowNumber, section: sectionNumber)

self.tableView.reloadRows(at: [indexPath], with: .automatic)

byDefault, if you have only one section in TableView, then you can put section value 0.

score 2 · Answer 6 · edited Jun 07 '18 at 11:10

2

let indexPathRow:Int = 0
let indexPosition = IndexPath(row: indexPathRow, section: 0)
tableView.reloadRows(at: [indexPosition], with: .none)

edited Jun 07 '18 at 11:10

Hardik Thakkar

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answered Jun 07 '18 at 10:15

Sachin Rasane

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Hi, Welcome to Stack Overflow and thank you for your first answer. To make the answer more useful to other people, it is best practice to annotate your answer with text that explains why it addresses the OP's original question. – Spangen Jun 07 '18 at 10:18

score 2 · Answer 7 · answered Jan 10 '19 at 16:22

I realize this question is for Swift, but here is the Xamarin equivalent code of the accepted answer if someone is interested.

var indexPath = NSIndexPath.FromRowSection(rowIndex, 0);
tableView.ReloadRows(new NSIndexPath[] { indexPath }, UITableViewRowAnimation.Top);

Burcu Kutluay · Answer 8 · 2018-07-11T08:23:48.607

1

In addition, If you have sections for tableview, you should not try to find every rows you want to refresh, you should use reload sections. It is easy and more balanced process:

yourTableView.reloadSections(IndexSet, with: UITableViewRowAnimation)

edited Jul 11 '18 at 08:23

answered Jul 11 '18 at 06:11

Burcu Kutluay

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score 1 · Answer 9 · answered Apr 30 '20 at 18:16

1

    extension UITableView {
        /// Reloads a table view without losing track of what was selected.
        func reloadDataSavingSelections() {
            let selectedRows = indexPathsForSelectedRows

            reloadData()

            if let selectedRow = selectedRows {
                for indexPath in selectedRow {
                    selectRow(at: indexPath, animated: false, scrollPosition: .none)
                }
            }
        }
    }

tableView.reloadDataSavingSelections()

answered Apr 30 '20 at 18:16

irwin B

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I found myself in a particular situation. My main goal was to accomplish that when the user is in a cell. And I have made some modification. You can update only the cell, it is in, without loading the whole table and confusing the user. For this reason, this function takes advantage of the tableView properties, adding a custom ReloadDataCell. And adding tableview.reloadDataSavingSelecctions (). Where, you do some action. And once I did, I wanted to share that solution with you. – irwin B May 02 '20 at 02:33
Please add all clarification to your answer by editing it – Nico Haase May 02 '20 at 06:51

score 0 · Answer 10 · answered Jan 29 '15 at 03:31

0

How about:

self.tableView.reloadRowsAtIndexPaths([NSIndexPath(rowNumber)], withRowAnimation: UITableViewRowAnimation.Top)

answered Jan 29 '15 at 03:31

ljk321

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Rana Ali Waseem · Answer 11 · 2018-10-18T14:05:00.520

Swift 4.1

use it when you delete row using selectedTag of row.

self.tableView.beginUpdates()

        self.yourArray.remove(at:  self.selectedTag)
        print(self.allGroups)

        let indexPath = NSIndexPath.init(row:  self.selectedTag, section: 0)

        self.tableView.deleteRows(at: [indexPath as IndexPath], with: .automatic)

        self.tableView.endUpdates()

        self.tableView.reloadRows(at: self.tableView.indexPathsForVisibleRows!, with: .automatic)

Refresh certain row of UITableView based on Int in Swift

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