`tableView` moves up while selecting Cell - ios

Question

In my View Controller I have a tableView and overtime I select my cell my tableview moves a bit upside I don't know why its happening, I tried to figure out why is it happening but I got nothing. Below is my code if any body can find out whats wrong then it'll be so helpful for me.
Outlets and Variables:
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var headerView: UIView!
#IBOutlet var verticalSpaceConstraint: NSLayoutConstraint!
var lastVerticalOffset: CGFloat = 0
in ViewDidLoad:
tableView.contentInset = UIEdgeInsets(top: headerViewOriginalHeight, left: 0, bottom: 0, right: 0)
tableView.scrollIndicatorInsets = tableView.contentInset
lastVerticalOffset = tableView.contentOffset.y
...........
footerView.addSubview(footerLabel)
footerView.addSubview(footerRetryButton)
footerView.addSubview(activityIndicatorView)
self.tableView.tableFooterView = footerView
Delegates:
extension myViewController: UITableViewDelegate, UITableViewDataSource {
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return reviewsArray.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell") as! TagDetailTableViewCell
..............................
return cell
}
func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
if indexPath == selectedIndexPath {
return UITableViewAutomaticDimension
} else {
return 100
}
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
tableView.beginUpdates()
if indexPath == selectedIndexPath {
selectedIndexPath = NSIndexPath()
}else {
selectedIndexPath = indexPath
}
tableView.endUpdates()
print( "tableView ORIIGN Y AFETER ", tableView.contentOffset.y)
self.tableView.separatorStyle = .None
self.tableView.separatorStyle = .SingleLine
}
}

Answer 1

You are remove the code of tableView Reload inSide the DidSelect method. Remove tableView.beginUpdates() and tableView.endUpdates(), Now you are only reload Single Cell of TableView.
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if indexPath == selectedIndexPath {
selectedIndexPath = NSIndexPath()
}else {
selectedIndexPath = indexPath
}
NSArray* rowsToReload = [NSArray arrayWithObjects:indexPath, nil];
[myUITableView reloadRowsAtIndexPaths:rowsToReload withRowAnimation:UITableViewRowAnimationNone];
self.tableView.separatorStyle = .None
self.tableView.separatorStyle = .SingleLine
}

Answer 2

Remove tableView.beginUpdates() and tableView.endUpdates() from didselectrow method. You not need to use it in this context!
Manage array to keep track of selected row and manage cellforrow accordingly and reload table from didselectrow.
or in your viewDidload try
self.automaticallyAdjustsScrollViewInsets = false