Pass data to variable in swift

Question

I want to assign button tag to variable. Then I trying send this data to SecondViewController and assign it to var.

@IBAction func goToProducts(_ sender: UIButton) {
    
    performSegue(withIdentifier: TextStrings.ProfileAluVC.goToProducts, sender: self)
    categoryNumber = sender.tag }

Pass data to ProductsViewController

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "goToProducts" {
        let destinationController = segue.destination as! ProductsViewController
        destinationController.categoryNumb = categoryNumber
    }
}

At ProductsViewController I create var but there isn't this data. I print this variable and I get this:

categoryNumber: 373

categoryNumb: Optional(24)

Can you tell me haw can I do this?

for starters, if you are using a String Constant as your segue id (which isn't a bad idea, although using an enum is probably more common) then you should use it in prepare(for:) too. If you've got a slight difference between the literal & the constant the value won't be injected. — flanker
– flanker, Commented Nov 14, 2019 at 19:47

Shehata Gamal · Accepted Answer · 2019-11-14 19:44:08Z

1

You need to assign it first before performSegue

categoryNumber = sender.tag  
performSegue(withIdentifier: TextStrings.ProfileAluVC.goToProducts, sender: self)

OR use sender

performSegue(withIdentifier: TextStrings.ProfileAluVC.goToProducts, sender: sender.tag)

Pass data to ProductsViewController

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "goToProducts" {
        let destinationController = segue.destination as! ProductsViewController
        destinationController.categoryNumb = sender as! Int
    }
}

answered Nov 14, 2019 at 19:44

Shehata Gamal

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