Question

我有一个父类A，它有两个容器B和C，带有两个相应的uiviewcontrollers。我正在使用UISegmentContol切换两个控制器。父类有一个对象＆＃34;变量＆＃34;我想传递给UiViewControllers B和C.

我的DouBt：我如何从父类共享一个对象到两个子类？如何在父类中创建子类的引用？

class A: UIViewController {

@IBOutlet weak var segment: UISegmentedControl!
@IBOutlet var containerSearch: UIView!
@IBOutlet var containerAdvancedSearch: UIView!
var variables: Variables?

override func viewDidLoad() {
    super.viewDidLoad()
    let a = variables?.bankNameLong
    print("from " + a! + "")
}

@IBAction func actionSwitchSegments(sender: AnyObject) {
   if sender.selectedSegmentIndex == 0 {
        UIView.animateWithDuration(0.5, animations: {
            self.containerChangePassword.alpha = 1
            self.containerAbout.alpha = 0
        })
    } else {
        UIView.animateWithDuration(0.5, animations: {
            self.containerChangePassword.alpha = 0
            self.containerAbout.alpha = 1
        })
    }

}



   if segue.identifier == "segSearch"{
        let newViewController: vConSearch = segue.destinationViewController as! vConSearch
        newViewController.Variables = self.Variables
    }else if segue.identifier == "segAdvancedSearch"{
        let newViewController: vConAdvancedSearch = segue.destinationViewController as! vConAdvancedSearch
        newViewController.Variables = self.Variables
    }

我尝试使用segue，但它仅适用于单个子控制器。但是，通过执行segue，每次单击UiSegmentControl时都不会创建新实例。

Answer 1

您必须在某处编写此代码以导航到所需的viewcontroller

self.performSegueWithIdentifier("segSearch", sender: sender)

然后是代表

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

    if segue.identifier == "segSearch"{
        let newViewController: vConSearch = segue.destinationViewController as! vConSearch
        newViewController.Variables = self.Variables
    }else if segue.identifier == "segAdvancedSearch"{
        let newViewController: vConAdvancedSearch = segue.destinationViewController as! vConAdvancedSearch
        newViewController.Variables = self.Variables
    }
}

如果代码不起作用，还会调试一些断点来检查代码，检查是否正在调用函数和正确分配变量。

通过UISegmentControl将数据传递给childViewControllers

1 个答案: