tableView.addGestureRecognizer for one section of the tableViewController - ios

Question

I'm new to iOS, swift. I have two sections in my tableView. I want to be able to do a longPressGesture on the second section, and not the first, enabling the user to reorder tableview cells in the second section. How would I do that in swift? Would anyone kindly provide a simple sample code in Swift?
Thanks for your help, much appreciated!

Answer 1

If you just want to reorder move the cell for the particular you may add some button/action to enable/disable reorder , there is delegate which you can use
Your code can be like this:
//enable editing in the tableview to true when you want to enable reorder in your case may on the UILongPressGestureRecognizer action
//In viewDidLoad()
tblView.editing = true//set it to false to complete the reorder
The delegate methods can be use like this:
func tableView(tableView: UITableView, editingStyleForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCellEditingStyle {
return UITableViewCellEditingStyle.None
}
func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
//get the reorder change in the path, you can do operation on the array
let itemToMove:String = arrData[fromIndexPath.row]//get the old path of item
arrData.removeAtIndex(fromIndexPath.row)//remove item from old path
arrData.insert(itemToMove, atIndex: toIndexPath.row)//at item at new path in array
}
func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
//write code to allow reorder in the particular section/indexpath
if indexPath.section == 0 {
return false
} else {
return true
}
// Return false if you do not want the item to be re-orderable.
}
func tableView(tableView: UITableView, targetIndexPathForMoveFromRowAtIndexPath sourceIndexPath: NSIndexPath, toProposedIndexPath proposedDestinationIndexPath: NSIndexPath) -> NSIndexPath {
//check if the reorder is allow in the particular section/indexpath before the reorder is done, return the old path if you don't want to move at Proposed path
if sourceIndexPath.section != proposedDestinationIndexPath.section {
return sourceIndexPath
} else {
return proposedDestinationIndexPath
}
}
the UILongPressGestureRecognizer can be implemented on the tableview or the tableview cell based on the requirements
let longpress = UILongPressGestureRecognizer(target:self, action:#selector(HomeScreenTableViewController.longPressGestureRecognized))
tblView.addGestureRecognizer(longpress)
func longPressGestureRecognized() {
NSLog("Detected")
tblView.editing = true
}
or in tableview cell with same method as above
let longpress = UILongPressGestureRecognizer(target:self, action:#selector(HomeScreenTableViewController.longPressGestureRecognized))
cell.addGestureRecognizer(longpress)