Vfrdtyky

I prefer

[mainTableView setContentOffset:CGPointZero animated:YES];

If you have a top inset on your table view, you have to subtract it:

[mainTableView setContentOffset:CGPointMake(0.0f, -mainTableView.contentInset.top) animated:YES];

Possible Actions:

1

func scrollToFirstRow() {

    let indexPath = NSIndexPath(forRow: 0, inSection: 0)

    self.tableView.scrollToRowAtIndexPath(indexPath, atScrollPosition: .Top, animated: true)

}

2

func scrollToLastRow() {

    let indexPath = NSIndexPath(forRow: objects.count - 1, inSection: 0)

    self.tableView.scrollToRowAtIndexPath(indexPath, atScrollPosition: .Bottom, animated: true)

}

3

func scrollToSelectedRow() {

    let selectedRows = self.tableView.indexPathsForSelectedRows

    if let selectedRow = selectedRows?[0] as? NSIndexPath {

        self.tableView.scrollToRowAtIndexPath(selectedRow, atScrollPosition: .Middle, animated: true)

    }

}

4

func scrollToHeader() {

    self.tableView.scrollRectToVisible(CGRect(x: 0, y: 0, width: 1, height: 1), animated: true)

}

5

func scrollToTop(){

    self.tableView.setContentOffset(CGPointMake(0,  UIApplication.sharedApplication().statusBarFrame.height ), animated: true)

}

Disable Scroll To Top:

func disableScrollsToTopPropertyOnAllSubviewsOf(view: UIView) {

    for subview in view.subviews {

        if let scrollView = subview as? UIScrollView {

            (scrollView as UIScrollView).scrollsToTop = false

        }

        self.disableScrollsToTopPropertyOnAllSubviewsOf(subview as UIView)

    }

}

Modify and use it as per requirement.

Swift 4

  func scrollToFirstRow() {

    let indexPath = IndexPath(row: 0, section: 0)

    self.tableView.scrollToRow(at: indexPath, at: .top, animated: true)

  }

It's better to not use NSIndexPath (empty table), nor assume that top point is CGPointZero (content insets), that's what I use -

[tableView setContentOffset:CGPointMake(0.0f, -tableView.contentInset.top) animated:YES];

Hope this helps.

Swift 4:

This works very well:

//self.tableView.reloadData() if you want to use this line remember to put it before 

let indexPath = IndexPath(row: 0, section: 0)

self.tableView.scrollToRow(at: indexPath, at: .top, animated: true)

For tables that have a contentInset, setting the content offset to CGPointZero will not work. It'll scroll to the content top vs. scrolling to the table top.

Taking content inset into account produces this instead:

[tableView setContentOffset:CGPointMake(0, -tableView.contentInset.top) animated:NO];

This code let's you scroll a specific section to top

CGRect cellRect = [tableinstance rectForSection:section];

CGPoint origin = [tableinstacne convertPoint:cellRect.origin 

                                    fromView:<tableistance>];

[tableinstance setContentOffset:CGPointMake(0, origin.y)];

On iOS 11, use adjustedContentInset to correctly scroll to top for both cases when the in-call status bar is visible or not.

if (@available(iOS 11.0, *)) {

    [tableView setContentOffset:CGPointMake(0, -tableView.adjustedContentInset.top) animated:YES];

} else {

    [tableView setContentOffset:CGPointMake(0, -tableView.contentInset.top) animated:YES];

}

Swift:

if #available(iOS 11.0, *) {

    tableView.setContentOffset(CGPoint(x: 0, y: -tableView.adjustedContentInset.top), animated: true)

} else {

    tableView.setContentOffset(CGPoint(x: 0, y: -tableView.contentInset.top), animated: true)

}

Swift:

tableView.setContentOffset(CGPointZero, animated: true)

Adding on to what's already been said, you can create a extension (Swift) or category (Objective C) to make this easier in the future:

Swift:

extension UITableView {

    func scrollToTop(animated: Bool) {

        setContentOffset(CGPointZero, animated: animated)

    }

}

Any time you want to scroll any given tableView to the top you can call the following code:

tableView.scrollToTop(animated: true)

Swift 3

tableView.setContentOffset(CGPoint.zero, animated: true)

if tableView.setContentOffset don't work.

Use:

tableView.beginUpdates()

tableView.setContentOffset(CGPoint.zero, animated: true)

tableView.endUpdates()

Swift :

if you don't have tableView header :

tableView.setContentOffset(CGPointMake(0,  UIApplication.sharedApplication().statusBarFrame.height ), animated: true)

if so :

tableView.setContentOffset(CGPointMake(0, -tableViewheader.frame.height   + UIApplication.sharedApplication().statusBarFrame.height ), animated: true)

I've encountered an issue calling trying some of the methods on an empty tableView. Here's another option for Swift 4 that handles empty tableviews.

extension UITableView {

  func hasRowAtIndexPath(indexPath: IndexPath) -> Bool {

    return indexPath.section < self.numberOfSections && indexPath.row < self.numberOfRows(inSection: indexPath.section)

  }



  func scrollToTop() {

    let indexPath = IndexPath(row: 0, section: 0)

    if self.hasRowAtIndexPath(indexPath: indexPath) {

      self.scrollToRow(at: indexPath, at: .top, animated: true)

    }

  }

}

Usage:

// from yourViewController or yourTableViewController

tableView.scrollToTop()

Since my tableView is full of all kinds of insets, this was the only thing that worked well:

Swift 3

if tableView.numberOfSections > 0 && tableView.numberOfRows(inSection: 0) > 0 {

  tableView.scrollToRow(at: IndexPath(row: 0, section: 0), at: .top, animated: true)

}

Swift 2

if tableView.numberOfSections > 0 && tableView.numberOfRowsInSection(0) > 0 {

  tableView.scrollToRowAtIndexPath(NSIndexPath(forRow: 0, inSection: 0), atScrollPosition: .Top, animated: true)

}

I prefer the following, as it takes into account an inset. If there is no inset, it will still scroll to the top as the inset will be 0.

tableView.setContentOffset(CGPoint(x: 0, y: -tableView.contentInset.top), animated: true)

Here's what I use to work correctly on iOS 11:

extension UIScrollView {

    func scrollToTop(animated: Bool) {

        var offset = contentOffset

        if #available(iOS 11, *) {

            offset.y = -adjustedContentInset.top

        } else {

            offset.y = -contentInset.top

        }

        setContentOffset(offset, animated: animated)

    }

}

Swift 4 via extension, handles empty table view:

extension UITableView {

    func scrollToTop(animated: Bool) {

        self.setContentOffset(CGPoint.zero, animated: animated);

    }

}

I had to add the multiply by -1 * to the sum of the status bar and the navigation bar, because it was going that height off the screen,

self.tableView.setContentOffset(CGPointMake(0 , -1 * 

  (self.navigationController!.navigationBar.height +  

  UIApplication.sharedApplication().statusBarFrame.height) ), animated:true)

func scrollToTop() {

        NSIndexPath *topItem = [NSIndexPath indexPathForItem:0 inSection:0];

        [tableView scrollToRowAtIndexPath:topItem atScrollPosition:UITableViewScrollPositionTop animated:YES];

}

call this function wherever you want UITableView scroll to top

Here Is The Code To ScrollTableView To Top Programatically

Swift:

self.TableView.setContentOffset(CGPointMake(0, 1), animated:true)

In Swift-3 :

self.tableView.setContentOffset(CGPoint.zero, animated: true)

using contentOffset is not the right way. this would be better as it is table view's natural way

tableView.scrollToRow(at: NSIndexPath.init(row: 0, section: 0) as IndexPath, at: .top, animated: true)

I use tabBarController and i have a few section in my tableview at every tab, so this is best solution for me.

extension UITableView {



    func scrollToTop(){



        for index in 0...numberOfSections - 1 {

            if numberOfSections > 0 && numberOfRows(inSection: index) > 0 {

                scrollToRow(at: IndexPath(row: 0, section: index), at: .top, animated: true)

                break

            }



            if index == numberOfSections - 1 {

                setContentOffset(.zero, animated: true)

                break

            }

        }



    }



}

This was the only code snippet that worked for me

Swift 4:

    tableView.scrollRectToVisible(CGRect(x: 0, y: 0, width: 1, height: 1), animated: true)

    tableView.scrollToRow(at: IndexPath(row: 0, section: 0), at: .top, animated: true)

    tableView.setContentOffset(CGPoint(x: 0, y: -70), animated: true)

P.S. 70 is the height of my header and table view cell

If you i would like move scroll animation in the table, use this code. The scroll move to top with animation in .5 seconds.

[UIView beginAnimations:nil context:nil];

[UIView setAnimationDuration:0.5];

[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];



[_tableContent scrollRectToVisible:CGRectMake(0, 0, 1, 1) animated:YES];



[UIView commitAnimations];

in swift

your row = selectioncellRowNumber
your section if you have = selectionNumber if you dont have set is to zero

//UITableViewScrollPosition.Middle or Bottom or Top

var lastIndex = NSIndexPath(forRow:  selectioncellRowNumber, inSection: selectionNumber)

self.tableView.scrollToRowAtIndexPath(lastIndex, atScrollPosition: UITableViewScrollPosition.Middle, animated: true)

With Swift:

self.scripSearchView.quickListTbl?.scrollToRowAtIndexPath(indexPath, atScrollPosition: .Top, animated: true)

To have a completion when finished, add this extension

// MARK: - UIScrollView



extension UIScrollView {



    /// Animate scroll to top with completion

    ///

    /// - Parameters:

    ///   - duration:   TimeInterval

    ///   - completion: Completion block

    func animateScrollToTop(withDuration duration:  TimeInterval,

                            completion:             @escaping (()->())) {



        UIView.animate(withDuration: duration, animations: { [weak self] in

                self?.setContentOffset(CGPoint.zero, animated: false)

            }, completion: { finish in

                guard finish else {

                    return

                }

                completion()

        })

    }

}



tableView.animateScrollToTop(withDuration: 0.25) { 

    // Finish

}

DONT USE

 tableView.setContentOffset(.zero, animated: true)

It can sometimes set the offset improperly. For example, in my case, the cell was actually slightly above the view with safe area insets. Not good.

INSTEAD USE

 tableView.scrollToRow(at: IndexPath(row: 0, section: 0), at: .top, animated: true)