ios - XCode 7 - Swift - 通过 SFSafariViewController 自动加载站点

Question

我正在更新我们的 iTunes 应用程序，并且想利用新的 SFSafariViewController api。用例非常简单，当用户打开应用程序时，应用程序会自动加载 SFSafariViewController 中设置的 url。

关于这方面的教程似乎有限，并且确实存在的教程在应用程序打开后通过链接涉及 IBActions。

当用户点击其设备上的应用程序时，如何在 SFSafariViewController 中自动打开链接？

以下代码只是白页:

import UIKit
import SafariServices

class ViewController: UIViewController
{
    private var urlString:String = "https://example.com"

    override func viewDidLoad()
    {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        let svc = SFSafariViewController(URL: NSURL(string: self.urlString)!)

        svc.presentViewController(self, animated: true, completion: nil)
    }

    override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

----工作代码----

import UIKit
import SafariServices

class ViewController: UIViewController
{
    private var urlString:String = "https://example.com"

    override func viewDidLoad()
    {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func viewDidAppear(animated: Bool) {

        super.viewDidAppear(animated)

        let svc = SFSafariViewController(URL: NSURL(string: self.urlString)!)

        self.presentViewController(svc, animated: true, completion: nil)
    }
}

Answer 1

您当前的代码正在尝试显示 SFSafariViewController 中的当前 View Controller (ViewController)，它甚至还没有被显示.

尝试交换这个:

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

为此:

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