實現 SFSafariViewControllerDelegate

你應該實現 SFSafariViewControllerDelegate，以便當使用者點選 SafariViewController 上的 Done 按鈕時通知你的類，你也可以解僱它。

首先宣告你的類來實現協議。

class MyClass: SFSafariViewControllerDelegate {

}

實施委託方法以獲得解僱通知。

func safariViewControllerDidFinish(controller: SFSafariViewController) {
    // Dismiss the SafariViewController when done
    controller.dismissViewControllerAnimated(true, completion: nil)
}

不要忘記將你的類設定為 SafariViewController 的委託。

let safariVC = SFSafariViewController(URL: yourURL)
safariVC.delegate = self

你可以實現的其他委託方法是：

// Called when the initial URL load is complete.
safariViewController(_ controller: SFSafariViewController, didCompleteInitialLoad didLoadSuccessfully: Bool) { }

// Called when the user taps an Action button.
safariViewController(_ controller: SFSafariViewController, activityItemsFor URL: URL, title: String?) -> [UIActivity] { }