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

Question

我正在更新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，该应用程序会自动将设置的URL加载到SFSafariViewController中。

关于此的教程似乎很有限，一旦应用打开，确实存在的教程会通过链接涉及IBAction。

当用户单击其设备上的应用程序时，如何自动在SFSafariViewController中打开链接？

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从SFSafariViewController呈现当前的视图控制器（ ViewController ），甚至尚未显示。

尝试交换这个：

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

为了这：

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