加载LaunchScreen后显示ViewController

Question

我正在尝试为我的应用程序创建一个漫游(介绍)。我正在使用BWWalkthrough来做这件事。如果想要在单击按钮后打开这个视图控制器，它可以工作(如您在下面的代码中所看到的)。但我不想这么做。我想在启动屏幕加载后打开这个视图控制器。

当我单击母版页的“是初始视图控制器”并在viewDidLoad方法中添加以下代码时，我只能看到母版页，但看不到视图控制器(page_one，page_two ...)附加到母版页。也许我必须用AppDelegate写一些代码，但我不知道它是怎么写的

我该如何解决这个问题？

@IBAction func testButton(_ sender: Any) {

    let goStoryboard = UIStoryboard(name: "Main", bundle: nil)
    let walkthrough = goStoryboard.instantiateViewController(withIdentifier: "master") as! BWWalkthroughViewController
    let page_one = goStoryboard.instantiateViewController(withIdentifier: "page1") as UIViewController
    let page_two = goStoryboard.instantiateViewController(withIdentifier: "page2")as UIViewController
    let page_three = goStoryboard.instantiateViewController(withIdentifier: "page3")as UIViewController

    **// Attach the pages to the master**
    walkthrough.delegate = self
    walkthrough.add(viewController:page_one)
    walkthrough.add(viewController:page_two)
    walkthrough.add(viewController:page_three)

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

}

Answer 1

首先，转到您的主情节提要并创建一个新的视图控制器。您还应该创建一个视图控制器类。这将成为您的主屏幕情节串连板，您将把它设置为您的初始View Controller。

在您之前创建的类中，您可以放入以下内容：

class HomeViewController: UIViewController {
    override viewDidLoad(){
        super.viewDidLoad()
        let goStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let walkthrough = goStoryboard.instantiateViewController(withIdentifier: "master") as! BWWalkthroughViewController
        let page_one = goStoryboard.instantiateViewController(withIdentifier: "page1") as UIViewController
        let page_two = goStoryboard.instantiateViewController(withIdentifier: "page2")as UIViewController
        let page_three = goStoryboard.instantiateViewController(withIdentifier: "page3")as UIViewController

        // Attach the pages to the master
        walkthrough.delegate = self
        walkthrough.add(viewController:page_one)
        walkthrough.add(viewController:page_two)
        walkthrough.add(viewController:page_three)

        self.present(walkthrough, animated: true, completion: nil)
    }
}