Passing data to a custom UITableViewCell class - ios

Question

ViewControllerA will be pushing to ViewControllerB. ViewcontrollerB is a UITableView that has a custom UITableViewCell that is registered upon load.
Here is my custom UITableViewCell:
override func awakeFromNib() {
super.awakeFromNib()
// Here is me attempting to pass my data from my view controller
someButton.text = stringFromViewController
}
Here's my UITableView:
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let customCell = CustomCell()
customCell.stringFromViewController = "Some Text"
self.performSegueWithIdentifier("ViewControllerB", sender: nil)
}
Whenever I attempt this the string comes back as empty. I'm not sure if this has to do with the fact that I am trying to pass this data to the UITableViewCell instead of the UITableView that contains the custom cell. I'd like to pass the data to my custom cell class.

Answer 1

You going about this the wrong way.
your tableView is reloading automatically upon loading controller B.
you should pass the data to the cell in tableView:CellForRow: method.
you can also call tableView.reloadData() once you assign the value from controller A.
here's an example:
class ControllerB {
var tableView: UITableView! //IBOutlet?
var stringFromA: String? {
didSet {
self.tableView.reloadData()
}
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell")
cell.stringFromA = self.stringFromA
return cell
}

Answer 2

Because awakeFromNib() initilizes even before you initilize the cell.
instead of assigning it in this method use this in didSelectRowAtIndexPath
let customCell = CustomCell()
customCell.someButton.setText("Some Text", forState: .Normal)
self.performSegueWithIdentifier("ViewControllerB", sender: nil)

Answer 3

My understanding of your question is that clicking on a row from View Controller A will push View Controller B and you want to pass some data to the custom cell in View Controller B. you have to use prepareForSegue to pass the data.
in view controller b, set a variable, and in your case, a bool.
class ViewControllerB {
var boolValue: Bool?
}
then in didSelectRowAtIndexPath in ViewControllerA you perform the segue
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("ViewControllerB", sender: nil)
}
Then you have to perform prepareForSegue according to the row being selected
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
if segue.identifier == "ViewControllerB" {
//if you need to know which row is select, use indexPath.row
if let indexPath = tableView.indexPathForSelectedRow {
let controller = segue.destinationViewController as! ViewControllerB
//send the details that you want, i.e
if indexPath.row < 5 {
controller.boolValue = true
} else {
controller.boolValue = false
}
}
}
once the segue is called, you pass the data through prepareForSegue, then you can pass the information to the cell using cellForRowAtIndexPath method.
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("CustomCell", forIndexPath: indexPath) as! CustomTableViewCell
//pass the boolValue from viewcontrollerB to anotherBoolValue in custom cell
cell.anotherBoolValue = boolValue
// Configure the cell...
return cell
}

Answer 4

I agree with #Lirik
have a property observer on you controllerB's property and reload the table view, then in your cellForRowAtIndexPath(::)
cast the dequeued cell to your custom cell type so that you can access all the function of your cell
let cell:CustomCell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell") as! CustomCell
cell.someBotton.text = stringFromViewControllerA

Answer 5

I agree with #Lirik
have a property observer on you controllerB and reload the table view, then in your cellForRowAtIndexPath(::)
cast the dequeued cell to your custom cell type so that you can access all the function of your cell
let cell:CustomCell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell") as! CustomCell