Swift presentViewController

Question

我以编程方式在iOS Swift项目中拥有多个View Controller.我没有故事板,如果可能的话,我想避免使用它们.有没有办法切换到另一个viewcontroller.swift文件(我们将调用它view2.swift)并让它成为按钮调用的函数的一部分？
我尝试过以下方法:

let storyboard: UIStoryboard = UIStoryboard(name: "myTabBarName", bundle: nil)
let vc: UIViewController = storyboard.instantiateViewControllerWithIdentifier("myVCID") as UIViewController
self.presentViewController(vc, animated: true, completion: nil)

上面的工作与故事板,但我希望另一个view2.swift被称为.可以这样做吗？

Answer 1

试试这个:

let vc = ViewController() //change this to your class name
self.presentViewController(vc, animated: true, completion: nil)

使用Swift3:

self.present(vc, animated: true, completion: nil)

Answer 2

对于那些获得空白/黑屏的人来说,这段代码对我有用.

    let vc = self.storyboard?.instantiateViewController(withIdentifier: myVCID) as! myVCName
    self.present(vc, animated: true, completion: nil)

要为VC设置"标识符",只需转到故事板中VC的身份检查器.将"故事板ID"设置为您想要的标识符.请查看下面的图片以供参考.

Answer 3

供参考,因为这个问题是谷歌的第一个结果.

突破Swift 3的变化:

该方法presentViewController被该方法取代present.

您可以像旧的一样使用它:

self.present(viewControllerToPresent, animated: true, completion: nil)

打开相机的示例:

let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.camera
imagePicker.allowsEditing = false
self.present(imagePicker, animated: true, completion: nil)

Answer 4

Swift 3和Swift 4

let vc = self.storyboard?.instantiateViewController(withIdentifier: "idMyViewControllerName") as! MyViewControllerName
self.present(vc, animated: true, completion: nil)

Answer 5

对我来说,我在两个独立的导航控制器中有两个视图.我不得不使用上面的组合.

var vc = self.storyboard?.instantiateViewControllerWithIdentifier("WelcomeViewController") as! WelcomeViewController
    var navigationController = UINavigationController(rootViewController: vc)
    self.presentViewController(navigationController, animated: true, completion: nil)

Swift 3.x

        let secondVC = self.storyboard?.instantiateViewController(withIdentifier: "VC-ID" as! yourViewController
        let navigationVC = UINavigationController(rootViewController: secondVC)
        self.present(navigationVC, animated: true, completion: nil)

Answer 6

使用Swift 2.1+

 let vc = self.storyboard?.instantiateViewControllerWithIdentifier("settingsVC") as! SettingsViewController
 self.presentViewController(vc, animated: true, completion: nil)