ios - swift:如何在另一个 View Controller 中访问一个变量？

Question

我有 ViewController.swift 并且我有这个 View Controller 的内部

 let array = NSUserDefaults.standardUserDefaults().objectForKey("\(login)") as! NSArray

让 name = array[2]

我想获取数组的 3 个元素并在 ProfileViewController.swift 中使用它

我该怎么办？

Answer 1

使用 prepareForSegue 方法-

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    if segue.identifier == "SegueToProfileView" {
        //Replace "SegueToProfileView" with your segue identifier
        let x = segue.destinationViewController as! ProfileViewController
        x.arrayReceived = array

    }  
}

ProfileViewController 内部

var arrayReceived: [String]!

每当执行 segue 时，arrayReceived 将包含您的数组

let viewController = self.storyboard.instantiateViewControllerWithIdentifier("profileView") as ProdileViewController
viewController.arrayReceived = array

希望对你有帮助