Reload tableview section without scroll or animation

Question

I am reloading a tableView section using this code -

self.tableView.beginUpdates()
self.tableView.reloadSections(NSIndexSet(index: 1), withRowAnimation: UITableViewRowAnimation.None)
self.tableView.endUpdates()

Still the rows replacement is animated and the table view scrolls to the top.

How can I make sure that no animation will be applied to the section reload + prevent the table view from scrolling.

score 71 · Answer 1 · edited Nov 23 '18 at 16:54

71

To prevent scrolling and animation, do this:

UIView.performWithoutAnimation { 
    let loc = tableView.contentOffset
    tableView.reloadRows(at: [indexPath], with: .none)
    tableView.contentOffset = loc
}

edited Nov 23 '18 at 16:54

shim

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answered Aug 26 '16 at 04:22

n13

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Works for me on iOS9. Amazing technique! Thx – Mikael Sep 22 '17 at 14:42
Docs says .none use the default animation, but with this code updated rows aren't animated. Thanks. – user3057944 Jan 25 '18 at 15:50
1

I think it should be `tableView.setContentOffset(loc, animated: false)` instead of `tableView.contentOffset = loc` – Anjan Biswas Apr 05 '18 at 18:15
2

Worked fo me on Swift 4.1 – Ravi Aug 25 '18 at 10:37
1

the `contentOffset` hack wasn't necessary for me. [This answer here](https://stackoverflow.com/a/46591965/1032372) was sufficient. – shim Nov 23 '18 at 16:59
^ @shim thanks for the info - it might have changed since 2016 and maybe content offset is no longer necessary. There might be edge cases where it matters though. – n13 May 16 '19 at 15:19

score 61 · Answer 2 · answered Oct 05 '17 at 17:53

61

Swift 4:

Actually, the best way to prevent crazy animation during scrolling or expand/collapse cells is:

UIView.performWithoutAnimation {
       self.tableView.reloadRows(at: [indexPath], with: .none)
}

answered Oct 05 '17 at 17:53

Alessandro Ornano

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That actually worked and not only on Swift 4 but in 3.2 as well. This API appears to be available since iOS 7.0 Thank you! – iPav Oct 27 '17 at 00:01
1

You can skip `self` in `tableView.reloadRows` call to make code little cleaner. – Kamil Harasimowicz Feb 15 '18 at 15:52
4

@KamilHarasimowicz: You can not remove self since UIView.performWithoutAnimation is a closure. You need to add self inside it – Anand Jul 09 '19 at 09:25

score 50 · Accepted Answer · edited Nov 23 '18 at 16:55

50

Try this:

UIView.setAnimationsEnabled(false)
self.tableView.beginUpdates()
self.tableView.reloadSections(NSIndexSet(index: 1) as IndexSet, with: UITableViewRowAnimation.none)
self.tableView.endUpdates()

edited Nov 23 '18 at 16:55

shim

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answered Oct 26 '15 at 04:59

Abhinav

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thanks!...works for me on iOS 10.3, now the section header does not animate – Pangu Apr 29 '17 at 19:56
11

Thanks,Work for me. But you should enable animation again. UIView.setAnimationsEnabled(true) – PowHu Feb 28 '18 at 03:06
2

not workig for me endUpdates() crashed. libc++abi.dylib: terminating with uncaught exception of type NSException – Vineesh TP Jul 09 '18 at 16:08
1

`The inserted or deleted rows use the default animations` is what none means – Jonny Aug 27 '18 at 10:55

score 11 · Answer 4 · answered Sep 16 '19 at 10:34

11

Swift 5

UIView.performWithoutAnimation {
   self.tableView.reloadRows(at: [indexPath], with: .none)
  }

answered Sep 16 '19 at 10:34

Usama Ali

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without UIView.setAnimationsEnabled(true) it will still trigger animation of reload – Pavel Bogart May 17 '22 at 15:02

score 8 · Answer 5 · answered Feb 18 '18 at 18:02

8

Neither of given answers worked for me. Here's the solution I found, hope it would be useful to someone

Swift 4:

let lastScrollOffset = tableView.contentOffset

tableView.beginUpdates()
tableView.reloadSections(IndexSet(integer: 1), with: .none)
tableView.endUpdates()

tableView.layer.removeAllAnimations()
tableView.setContentOffset(lastScrollOffset, animated: false)

answered Feb 18 '18 at 18:02

Baradasy

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2
7

Not working for me, libc++abi.dylib: terminating with uncaught exception of type NSException – Vineesh TP Jul 09 '18 at 16:05

score 5 · Answer 6 · edited Aug 14 '18 at 10:07

5

Add one line more to this method in viewDidLoad

self.tableView.remembersLastFocusedIndexPath = true

Add this code where you want refresh after updation

UIView.setAnimationsEnabled(false)
    self.tableView.beginUpdates()
    self.tableView.reloadSections(NSIndexSet(index: 1) as IndexSet, with: UITableViewRowAnimation.none)
    self.tableView.endUpdates()

edited Aug 14 '18 at 10:07

franiis

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answered Aug 14 '18 at 09:33

Gurpreet Singh

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Okan · Answer 7 · 2019-02-08T08:30:22.223

5

Objective-C:

[UIView setAnimationsEnabled:NO];
   [[self tableView]beginUpdates];
   [self.tableView reloadSections:[[NSIndexSet alloc] initWithIndex:1] withRowAnimation:UITableViewRowAnimationNone];
   [[self tableView]endUpdates];

But I think the following code is more useful and better.

[UIView performWithoutAnimation:^{     
                [[self tableView]beginUpdates];
                [self.tableView reloadSections:[[NSIndexSet alloc] initWithIndex:1] withRowAnimation:UITableViewRowAnimationNone];
                [[self tableView]endUpdates];
            }];

edited Feb 08 '19 at 08:30

answered Feb 08 '19 at 08:22

Okan

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I think this approach is cleaner. – Tarun Aug 21 '19 at 13:33

score 0 · Answer 8 · answered Jul 24 '20 at 17:19

I've had this problem too. It seems to stem from putting an IndexPath inside .reloadSections instead of a IndexSet as it requests. Which is why it seems to work with .reloadRows with out issue:

tableView.reloadRows(at: [IndexPath], with: UITableView.RowAnimation)

tableView.reloadSections(IndexSet, with: UITableView.RowAnimation)

Just wrap the section you want to reload as an IndexSet:

tableView.reloadSections(IndexSet(integer: sectionInt), with: .none)

Reload tableview section without scroll or animation

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