How do I populate two sections in a tableview with two different arrays using swift?
TableView Cells
You could use a multidimensional array. For example:
let data = [["0,0", "0,1", "0,2"], ["1,0", "1,1", "1,2"]]
For the number of sections use:
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return data.count
}
Then, to specify the number of rows in each section use:
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return data[section].count
}
Finally, you need to setup your cells:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellText = data[indexPath.section][indexPath.row]
// Now do whatever you were going to do with the title.
}
TableView Headers
You could again use an array, but with just one dimension this time:
let headerTitles = ["Some Data 1", "KickAss"]
Now to set the titles for the sections:
override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section < headerTitles.count {
return headerTitles[section]
}
return nil
}
The code above checks to see there's a title for that section and returns it, otherwise nil
is returned. There won't be a title if the number of titles in headerTitles
is smaller than the number of arrays in data
.
The Result
You could create a Struct
to hold the data that belongs to a section, as an alternative to my previous answer. For example:
struct SectionData {
let title: String
let data : [String]
var numberOfItems: Int {
return data.count
}
subscript(index: Int) -> String {
return data[index]
}
}
extension SectionData {
// Putting a new init method here means we can
// keep the original, memberwise initaliser.
init(title: String, data: String...) {
self.title = title
self.data = data
}
}
Now in your view controller you could setup your section data like so:
lazy var mySections: [SectionData] = {
let section1 = SectionData(title: "Some Data 1", data: "0, 1", "0, 2", "0, 3")
let section2 = SectionData(title: "KickAss", data: "1, 0", "1, 1", "1, 2")
return [section1, section2]
}()
Section Headers
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return mySections.count
}
override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return mySections[section].title
}
Compared to my previous answer, you now don't have to worry about matching the number of headerTitles
to the number of arrays in data
.
TableView Cells
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return mySections[section].numberOfItems
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellTitle = mySections[indexPath.section][indexPath.row]
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! UITableViewCell
cell.textLabel?.text = cellTitle
return cell
}
You can determine which section you are in by looking at indexPath.section
.
To specify the titles, override the function
func tableView(tableView: UITableView!, titleForHeaderInSection section: Int) -> String!