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How to soften begin and endUpdates in TableView


By : Will
Date : October 15 2020, 08:10 AM
wish help you to fix your issue I had difficulty finding it because the question was a little different.
In conclusion, I found the perfect answer.
code :
func ExpandedButtonClick (_ height: Int)
{
    expandedHeight = height
    tableView.beginUpdates ()
    tableView.endUpdates ()
    tableView.layer.removeAllAnimations ()
    tableView.setContentOffset (tableView.contentOffset, animated: false)
}


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tableView beginUpdates and tableView endUpdates does't work on iOS 5 Device


By : n.t.gps.ta
Date : March 29 2020, 07:55 AM
this will help There are two things I'm seeing in your code, you are not actually inserting/deleting any new row in your UITableView and the beginAnimations block is only used for that purpose. From the doc:

UITableView jumps up after begin/endUpdates when using UITableViewAutomaticDimension


By : Nadeem Ahmad
Date : March 29 2020, 07:55 AM
will be helpful for those in need Actually I found a nice method to fix this.. It drove me crazy but look:
So you
code :
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let cell = tableView.cellForRow(at: indexPath)
        cell.heightConstraint = 100
        UIView.animate(withDuration: 0.15, animations: {

            self.view.layoutIfNeeded()
            self.tableView.beginUpdates()
            self.tableView.endUpdates()
        }, completion: nil)
}
var currentScrollPos : CGFloat?

override func scrollViewDidScroll(_ scrollView: UIScrollView) {
        // Force the tableView to stay at scroll position until animation completes
        if (currentScrollPos != nil){
            tableView.setContentOffset(CGPoint(x: 0, y: currentScrollPos!), animated: false)
        }
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let cell = tableView.cellForRow(at: indexPath)
        cell.heightConstraint = 100
        UIView.animate(withDuration: 0.15, animations: {

            self.currentScrollPos = self.tableView.contentOffset.y

            self.view.layoutIfNeeded()
            self.tableView.beginUpdates()
            self.tableView.endUpdates()

            self.currentScrollPos = nil
        }, completion: nil)
}

crash on [self.tableView endUpdates]


By : eahsan89
Date : March 29 2020, 07:55 AM
hope this fix your issue You're inserting the index paths from the NSFetchedResultsController, but have only one section (2) that 'belongs' to it. Yet, it will probably try to update section 0.
To be more clear: In
code :
- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject
       atIndexPath:(NSIndexPath *)indexPath
     forChangeType:(NSFetchedResultsChangeType)type
      newIndexPath:(NSIndexPath *)newIndexPath

Do I have to call begin/endUpdates method when a new row is inserted into the tableView?


By : martan
Date : March 29 2020, 07:55 AM
seems to work fine To animate a batch insertion, deletion, and reloading of rows and sections, call the corresponding methods within an animation block defined by successive calls to beginUpdates and endUpdates. If you don’t call the insertion, deletion, and reloading methods within this block, row and section indexes may be invalid. Calls to beginUpdates and endUpdates can be nested; all indexes are treated as if there were only the outer update block.
At the conclusion of a block—that is, after endUpdates returns—the table view queries its data source and delegate as usual for row and section data. Thus the collection objects backing the table view should be updated to reflect the new or removed rows or sections.

TableView reloadData vs. beginUpdates & endUpdates


By : Cameron Barden
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I got a tricky problem regarding updating my TableView, i get different results using different methods of updating it, let me explain: , From the UITableView documentation
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