How to change section location of a UITableViewCell on tap - ios

Question

I'm trying to add a UITableViewCell to another UITableView section whenever a button on the cell is tapped. However, I'm quite confused about the process of how to change a cell's section location after it has already been loaded into the table view. Currently I have two sections and am adding 5 custom UITableViewCells into the first section.
Any ideas on how to move the cells to the second section on tap?
Here are cell and section methods in my view controller class:
var tableData = ["One","Two","Three","Four","Five"]
// Content within each cell and reusablity on scroll
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var tableCell : Task = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! Task
tableCell.selectionStyle = .None
tableView.separatorStyle = UITableViewCellSeparatorStyle.None
var titleString = "Section \(indexPath.section) Row \(indexPath.row)"
tableCell.title.text = titleString
println(indexPath.row)
return tableCell
}
// Number of sections in table
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 2
}
// Section titles
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section == 0 {
return "First Section"
} else {
return "Second Section"
}
}
// Number of rows in each section
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0 {
return tableData.count
} else if section == 1 {
return 0
} else {
return 0
}
}

Answer 1

You need to have a separate datasource for first and second sections. When button is tapped, modify datasource and move cell to new section with moveRowAtIndexPath(indexPath: NSIndexPath, toIndexPath newIndexPath: NSIndexPath) UITableView method.
For example:
var firstDataSource = ["One","Two","Three","Four","Five"]
var secondDataSource = [ ]
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return section == 0 ? firstDataSource.count : secondDataSource.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! UITableViewCell
cell.textLabel?.text = indexPath.section == 0 ? firstDataSource[indexPath.row] : secondDataSource[indexPath.row]
return cell
}
// For example, changing section of cell when click on it.
// In your case, similar code should be in the button's tap event handler
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
if indexPath.section == 0
{
let data = firstDataSource[indexPath.row]
tableView.beginUpdates()
secondDataSource.append(data)
firstDataSource.removeAtIndex(indexPath.row)
let newIndexPath = NSIndexPath(forRow: find(secondDataSource, data)!, inSection: 1)
tableView.moveRowAtIndexPath(indexPath, toIndexPath: newIndexPath)
tableView.endUpdates()
}
}