How to pass data from one view controller to another?

问题

How do I pass the data from an array of one view controller to another view controller?

FirstViewController:

var myArray = ["some data"]

override func prepare(for segue: UIStoryboardSegue, sender: Any?){
  let destinationVC = segue.destination as! SecondViewController
  destinationVC.passedArray = myArray
}

SecondViewController:

var passedArray = [String]()

override func viewDidLoad(){
  super.viewDidLoad()
  print(passedArray)
}

回答1:

You can try this Solution for Data Transfer.

In FirstViewController.swift

let str = "Hello It's Done"
func callsecondViewController()
    {
        let controller = storyboard?.instantiateViewController(withIdentifier: "second") as! secondViewController
        self.present(controller, animated: true, completion: nil)
    }
func temp() -> NSString 
    {
        return str as NSString
    }

in SecondViewController.swift

var data = [NSString]()
    override func viewDidLoad() 
    {
        super.viewDidLoad()
        let view = ViewController()
        data = [view.temp()]
        print(data)
    }

and you get the output String as Hello It's Done

来源：https://stackoverflow.com/questions/41627520/how-to-pass-data-from-one-view-controller-to-another