Add a label to a section of tableView when it's empty - swift

Question

Almost the same question many times has been asked here, but my question is a bit different, for example here, a users shows a really good way to handing an empty tableview with a label
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if self.numberOfRow == 0{
var emptyLabel = UILabel(frame: CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height))
emptyLabel.text = "No Data"
emptyLabel.textAlignment = NSTextAlignment.Center
self.tableView.backgroundView = emptyLabel
self.tableView.separatorStyle = UITableViewCellSeparatorStyle.None
return 0
} else {
return self.numberOfRow
}
}
It works fine when there is a section, but my problem is, I have two section that users can move cells between them and I want, when one of them become empty, a label appear in the section to say it's empty.
Could anyone modify this way to do that? also it should reload data to show this label, is it right?
Many thanks

Answer 1

The easiest way is to show a regular cell in the section if there are no other rows in the section.
Here's some rough pseudocode:
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let sectionData = data[section]
return sectionData.isEmpty ? 1 : sectionData.count
}
tableView(tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let sectionData = data[section]
if sectionData.isEmpty {
// create plain cell
cell.textLabel.text = "Nothing to see here"
return cell
} else {
// create and return your normal data cell from the data for the index path
}
}
Another option is to show a section header or footer for any section that has no rows.