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

Question

我正在更新我们的iTunes应用程序，并希望利用新的SFSafariViewController api。用例非常简单，当用户打开应用程序时，应用程序会自动在SFSafariViewController中加载set url。

这方面似乎有有限的教程，一旦应用程序打开，那些确实存在的教程就会通过链接涉及到IBActions。

当用户单击设备上的应用程序时，如何在SFSafariViewController中自动打开链接？

以下代码仅为白页：

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.
    }
}

-工作守则

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

您的当前代码试图从ViewController中显示当前视图控制器( SFSafariViewController )，该视图控制器甚至还没有显示。

试着交换这个：

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

为此：

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