UITableView - I want to display blank cell - ios

Question

I set up my tableView and has two springVar as shown in the image below. I want my tableview to show empty cells after the two springVar so that my solve bar is at the bottom of the screen. Any advices on how to go about it? My code is below.
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return springVar.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "Cell"
var cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier) as? UITableViewCell
if cell == nil {
cell = UITableViewCell(style: UITableViewCellStyle.Value2, reuseIdentifier: cellIdentifier)
}
cell = UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: "cell")
var data : NSManagedObject = springVar[indexPath.row] as! NSManagedObject
cell!.textLabel!.text = "Spring \(indexPath.row + 1)"
var force : Float = data.valueForKey("force") as! Float
var stiffness : Float = data.valueForKey("stiffness") as! Float
cell!.detailTextLabel!.text = "Force =\(force) \t Stiffness =\(stiffness)"
cell!.detailTextLabel!.textColor = UIColor .darkGrayColor()
return cell!
}

Answer 1

i think this maybe helpfull
if indexPAth.row / 2 == 0
{
return UITableViewCell()
// u can customize ur cell to show a button or anything else
}
this show a custom/blank cell after each 2 cell,(odd)

Answer 2

You can add Footer view in your tableView this way:
override func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
let footerView = UIView(frame: CGRectMake(0, 0, tableView.frame.size.width, 40))
footerView.backgroundColor = UIColor.whiteColor()
//add button in your footer view
var button = UIButton(frame: CGRectMake(0, 0, 75, 30))
button.setTitle("Solve", forState: UIControlState.Normal)
button.setTitleColor(UIColor.brownColor(), forState: UIControlState.Normal)
button.addTarget(self, action: "buttonTapAction:", forControlEvents: UIControlEvents.TouchUpInside)
footerView.addSubview(button)
return footerView
}
override func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 40.0
}
And your result will be:

Answer 3

You can adjust the footerHeight according to your own needs.
override func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
let footerHeight : CGFloat = (tableView.frame.size.height - (CGFloat(springVar.count) * 45.0) - 45.0 - 64.0)
let oneCell = UIView(frame: CGRect(x: 0, y: 0, width: tableView.frame.size.width, height: footerHeight))
return oneCell
}
override func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
let footerHeight : CGFloat = (tableView.frame.size.height - (CGFloat(springVar.count) * 45.0) - 45.0 - 64.0)
return footerHeight
}