我试图将值传递给新的视图控制器 – 位于新的故事板文件中.但是当我这样做时,我从NewViewController得到的结果总是为零.
// Show create account page with custom transition var storyboard : UIStoryboard = UIStoryboard(name: StoryboardName,bundle: nil) var vc : UIViewController = storyboard.instantiateViewControllerWithIdentifier(NewViewController) as UIViewController
我尝试在这里发送信息：
// Pass the delegate to the first view controller let newViewController:NewViewController = NewViewController() newViewController.createAccountDelegate = self newViewController.teststring = "hello"
然后呈现视图控制器.
vc.transitioningDelegate = self vc.modalTransitionStyle = UIModalTransitionStyle.CoverVertical self.presentViewController(vc,animated: true,completion: nil)
这是我的NewViewController,我尝试接收值.但最终仍然是零.
import UIKit
class NewViewController: UIViewController {
var createAccountDelegate:AccountCreationDelegate!
var teststring:NSString!
override func viewDidLoad() {
super.viewDidLoad()
}
我错误地发送了这些值吗？
解决方法
您正在使用此行创建NewViewController的新实例
let newViewController:NewViewController = NewViewController()
而是将变量和委托分配给已从StoryBoard实例化的vc
var storyboard : UIStoryboard = UIStoryboard(name: StoryboardName,bundle: nil) // It is instance of `NewViewController` from storyboard var vc : NewViewController = storyboard.instantiateViewControllerWithIdentifier(NewViewController) as NewViewController // Pass delegate and variable to vc which is NewViewController vc.createAccountDelegate = self vc.teststring = "hello" vc.transitioningDelegate = self vc.modalTransitionStyle = UIModalTransitionStyle.CoverVertical self.presentViewController(vc,completion: nil)
