How to swap two cells of two different tables view? - ios

Question

I'm stuck with this problem:
I'm using this code to swap two cells of the same table view. I want to ask you how I should edit this code to swap two cells of two different table view in the same controller? I think that there isn't much to edit but I can't do on my own... thank you all.
#objc func onLongPressGestureDone(sender: UILongPressGestureRecognizer) {
let locationInView = sender.location(in: tableViewDone)
let indexPath = tableViewDone.indexPathForRow(at: locationInView)
if sender.state == .began {
if indexPath != nil {
initialIndexPathDone = indexPath
let cell = tableViewDone.cellForRow(at: indexPath!)
cellSnapshotDone = snapshotOfCellDone(inputView: cell!)
var center = cell?.center
cellSnapshotDone?.center = center!
cellSnapshotDone?.alpha = 0.0
tableViewDone.addSubview(cellSnapshotDone!)
UIView.animate(withDuration: 0.25, animations: { () -> Void in
center?.y = locationInView.y
self.cellSnapshotDone?.center = center!
self.cellSnapshotDone?.transform = (self.cellSnapshotDone?.transform.scaledBy(x: 1.05, y: 1.05))!
self.cellSnapshotDone?.alpha = 0.99
cell?.alpha = 0.0
}, completion: { (finished) -> Void in
if finished {
cell?.isHidden = true
}
})
}
} else if sender.state == .changed {
var center = cellSnapshotDone?.center
center?.y = locationInView.y
cellSnapshotDone?.center = center!
if ((indexPath != nil) && (indexPath != initialIndexPathDone)) {
progetto.done.swapAt(indexPath!.row, initialIndexPathDone!.row)
tableViewDone.moveRow(at: initialIndexPathDone!, to: indexPath!)
initialIndexPathDone = indexPath
}
} else if sender.state == .ended {
let cell = tableViewDone.cellForRow(at: initialIndexPathDone!)
cell?.isHidden = false
cell?.alpha = 0.0
UIView.animate(withDuration: 0.25, animations: { () -> Void in
self.cellSnapshotDone?.center = (cell?.center)!
self.cellSnapshotDone?.transform = CGAffineTransform.identity
self.cellSnapshotDone?.alpha = 0.0
cell?.alpha = 1.0
}, completion: { (finished) -> Void in
if finished {
self.initialIndexPathDone = nil
self.cellSnapshotDone?.removeFromSuperview()
self.cellSnapshotDone = nil
}
})
}
}
func snapshotOfCellDone(inputView: UIView) -> UIView {
UIGraphicsBeginImageContextWithOptions(inputView.bounds.size, false, 0.0)
inputView.layer.render(in: UIGraphicsGetCurrentContext()!)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
let cellSnapshotDone = UIImageView(image: image)
cellSnapshotDone.layer.masksToBounds = false
cellSnapshotDone.layer.cornerRadius = 0.0
cellSnapshotDone.layer.shadowOffset = CGSize(width: -5.0, height: 0.0)
cellSnapshotDone.layer.shadowRadius = 5.0
cellSnapshotDone.layer.shadowOpacity = 0.4
return cellSnapshotDone
}

Answer 1

You can do this easier with the moveRow(at:to:) function:
tableView.beginUpdates()
tableView.moveRow(at: firstIndexPath, to: secondIndexPath)
tableView.moveRow(at: secondIndexPath, to: firstIndexPath)
tableView.endUpdates()