Loading an Array to TableView based on Segment-Control - ios

Question

I am relatively new to Swift. I tried to search and google the problem but i can't find any answers. It shouldn't be that hard. Hope you guys can help me out. I‘ve been struggling with this Issue over days now:
I created a Tableview which loads an array of tuples from another .swift file. That is working fine! Now I want the tableview to choose the .swift based on a "segment control". So if the Segment-Control is switched to "A" I want it to show the Array of "PSSCBOOKMac.Swift", for B it would be the Array of "PSSCBOOKWin.swift".
The Action ist written properly, I guess (print-statements are working). But the change of the segment-control doesn't effect the Tableview. My guess: The segment-control doesn't effect the Tableview because it has been loaded before and I can't change the value. How can I achieve that?
Cheers for any answers!
Here is the Code:
import UIKit
class ViewController: UIViewController, UITableViewDataSource {
#IBOutlet weak var PSSCSegmentControl: UISegmentedControl!
//LOAD ARRAY FROM PSSCBOOK.SWIFT
var PSSCBook = PSSCBOOKMac()
#IBAction func PSSCSegmentControlChoose(sender: AnyObject) {
if PSSCSegmentControl.selectedSegmentIndex == 0 {
var PSSCBook = PSSCBOOKMac()
println("im mac")
} else {
var PSSCBook = PSSCBOOKWin()
println("im win")
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 2
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0 {
return PSSCBook.PSSCTools.count
} else {
return PSSCBook.PSSCFile.count
}
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCellWithIdentifier("PSCell", forIndexPath: indexPath) as! UITableViewCell
if indexPath.section == 0 {
let (shortCutTitle,shortCutKey) = PSSCBook.PSSCTools[indexPath.row]
cell.textLabel?.text = shortCutTitle
cell.detailTextLabel?.text = shortCutKey
} else {
let (shortCutTitle,shortCutKey) = PSSCBook.PSSCFile[indexPath.row]
cell.textLabel?.text = shortCutTitle
cell.detailTextLabel?.text = shortCutKey
}
/* var PSIcon = UIImage(named: "PSIcon")
cell.imageView?.image = PSIcon */
return cell
}
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section == 0 {
return "Tools"
} else {
return "File"
}
}
}

Answer 1

When you update the datasource of your table view, it won't magically update itself.
You have to reload the table view for the changes to take place:
#IBAction func PSSCSegmentControlChoose(sender: AnyObject) {
if PSSCSegmentControl.selectedSegmentIndex == 0 {
var PSSCBook = PSSCBOOKMac()
println("im mac")
} else {
var PSSCBook = PSSCBOOKWin()
println("im win")
}
self.tableView.reloadData();
}

Answer 2

I spend the last two days trying to figure out what was wrong with my code. I implemented the suggested reloadData() without having errors. The println Values in the console change.. But the tableview just won't refresh. I really don’t know where else to look, is searched for hours. Could somebody please tell me what type of silly mistake I am doing? Thanks guys!
import UIKit
class ViewController: UIViewController, UITableViewDataSource {
//LOAD ARRAY FROM PSSHORTCUTSBOOK.SWIFT
var PSSCBook = PSShortCutsBook()
#IBOutlet weak var SCOutlet: UISegmentedControl!
#IBOutlet weak var SCtableviewOutlet: UITableView!
#IBAction func SCAction(sender: AnyObject) {
if SCOutlet.selectedSegmentIndex == 1 {
var PSSCBook = PSShortCutsBook()
println("There are \(PSSCBook.shortCutsPS.count) items in this Array")
self.SCtableviewOutlet.reloadData();
} else {
var PSSCBook = PSShortCutsBook2()
println("There are \(PSSCBook.shortCutsPS.count) items in this Array")
self.SCtableviewOutlet.reloadData();
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 2
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0 {
return PSSCBook.shortCutsPS.count
} else {
return PSSCBook.shortCutsPS2.count
}
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCellWithIdentifier("PSCell", forIndexPath: indexPath) as! UITableViewCell
if indexPath.section == 0 {
let (shortCutTitle,shortCutKey) = PSSCBook.shortCutsPS[indexPath.row]
cell.textLabel?.text = shortCutTitle
cell.detailTextLabel?.text = shortCutKey
} else {
let (shortCutTitle,shortCutKey) = PSSCBook.shortCutsPS2[indexPath.row]
cell.textLabel?.text = shortCutTitle
cell.detailTextLabel?.text = shortCutKey
}
/* var PSIcon = UIImage(named: "PSIcon")
cell.imageView?.image = PSIcon */
return cell
}
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section == 0 {
return "Tools"
} else {
return "Help"
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}