Question

我的故事板上有一个普通的视图控制器设置，附加到“登陆”页面swift视图控制器类。我正在尝试使用这个流行的库创建一个演练动画：https://github.com/mamaral/Onboard

我从库的源代码下载了4个文件，并使用桥接头将它们链接到我的项目中。但是当我运行这个项目时，我被困住了。页面是空白的，没有任何显示。板载页面标题，图像，没有。这是空白的。我看不出有什么问题，我到处搜索，没有任何信息或任何使用此库的Swift示例。

有人可以帮忙吗？

这是我在“Landing”类的viewDidLoad（）期间调用的函数中的代码。

let firstPage = OnboardingContentViewController(title: "Page Title 1", body: "Page body goes here.", image: UIImage(named: "icon"), buttonText: "Text For Button") { () -> Void in
        // do something here when users press the button, like ask for location services permissions, register for push notifications, connect to social media, or finish the onboarding process
    }

    firstPage.titleTextColor = UIColor.blueColor()

    let secondPage = OnboardingContentViewController(title: "Page Title 2", body: "Page body goes here.", image: UIImage(named: "icon"), buttonText: "Text For Button") { () -> Void in
        // do something here when users press the button, like ask for location services permissions, register for push notifications, connect to social media, or finish the onboarding process
    }

    // Image
    let onboardingVC = OnboardingViewController(backgroundImage: UIImage(named: "street_view.png"), contents: [firstPage, secondPage])


    self.presentViewController(onboardingVC, animated: true, completion: nil)

由于

Answer 1

正如我们在Objective-C演示应用here中看到的那样，您应该在didFinishLaunchingWithOptions方法下的AppDelegate中包含此代码，并正确设置rootViewController。这是一个例子（未经测试）：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {  

    let firstPage = OnboardingContentViewController(title: "Page Title 1", body: "Page body goes here.", image: UIImage(named: "icon"), buttonText: "Text For Button") { () -> Void in
            // do something here 
        }

    firstPage.titleTextColor = UIColor.blueColor()

    let secondPage = OnboardingContentViewController(title: "Page Title 2", body: "Page body goes here.", image: UIImage(named: "icon"), buttonText: "Text For Button") { () -> Void in
           // do something here 
        }

    // Image
    let onboardingVC = OnboardingViewController(backgroundImage: UIImage(named: "street_view.png"), contents: [firstPage, secondPage])

    // Setting the BG color
    self.window?.backgroundColor = UIColor.blackColor()

    // Setting the rootViewController to your onboardingVC
    self.window?.rootViewController = onboardingVC

    return true
    }

Answer 2

如果您将代码粘贴到viewWillAppear（）事件中，它将全部呈现。

使用板载Swift库，但它显示为空白？

2 个答案: