Passing data between table views in swift

Question

Trying to code for about us page using tableviews. I am able to create the first table view for "about us" components

 var aboutUs = ["About us", "Contact us", "Privacy policy"]

Have to pass on this items to next table view containing aboutUsDetails

 var aboutUsDetails = ["A team of docs and coders ","Contact us at editor@gmail.com","Privacy Policy will be updated soon"]

I have created the segue function like this

    override func prepare(for segue: UIStoryboardSegue, sender: AnyObject?) {
     if segue.identifier == SegueDetailsTableViewController
     {
    let detailViewController = segue.destination as! DetailsTableViewController
        let myIndexPath = self.tableView.indexPathForSelectedRow!
        let row = myIndexPath.row
    detailViewController.aboutUsDetails = aboutUs[row]
}

I am a bit confused here because aboutUsDetails is a [String]; and it is not passing on? How do I overcome this?

Answer 1

If you are trying to pass only one string, there is no need to declare aboutUsDetails property as an array of strings, instead let it be just a single string:

In DetailsTableViewController :

Change aboutUsDetails: [String]? to aboutUsDetails: String?

If you are implementing the following code snippets, you should change them as follows:

Change this:

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return aboutUsDetails.count
}

to this:

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 1
}

And change this:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    // you might want to have a custom cell, you don't have to change it...
    let cell = tableView.dequeueReusableCell(withIdentifier: "MyCellId")

    cell?.textLabel?.text = aboutUsDetails[indexPath.row]
}

to this:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    // you might want to have a custom cell, you don't have to change it...
    let cell = tableView.dequeueReusableCell(withIdentifier: "MyCellId")

    // this is part you should foucing on...
    cell?.textLabel?.text = aboutUsDetails
}

Note: you might need to do Optional Binding to display the value of aboutUsDetails as it should (without "Optional("...")").

---

OR

if you insist to declare aboutUsDetails as an array of strings (which I think that there is no need to do that), you will need to pass your string as an array containing one string, as follows:

override func prepare(for segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == SegueDetailsTableViewController
        {
            let detailViewController = segue.destination as! DetailsTableViewController
            let myIndexPath = self.tableView.indexPathForSelectedRow!
            let row = myIndexPath.row
            // here is the change, you are passing your string as the first
            // (and the only one) element of 'aboutUsDetails'
            detailViewController.aboutUsDetails = [aboutUs[row]]
        }
    }

Hope this helped.

Answer 2

aboutUs[row] is a single string, aboutUsDetails seems to be an array of strings. You can either change aboutUsDetails to be a String, or pass your data like this:

detailViewController.aboutUsDetails = [aboutUs[row]]

Answer 3

You need to only one changes and very small to below line

 detailViewController.aboutUsDetails = [aboutUs[row]] 

because aboutUs[row] is string and [aboutUs[row]] is Array of String and you can not assign String to aboutUsDetails which is array of String.