SFSafariViewController ładowanie pustej białej strony

Question

Używam SFSafariViewController do otwierania adresu URL w mojej aplikacji na iOS .. działał idealnie na ios 9, ale po aktualizacji mojego urządzenia do ios 10, po prostu ładuje pustą białą stronę bez adresu URL bar .. nawet safariViewController (regulator: SFSafariViewController, didCompleteInitialLoad didLoadSuccessfully: Bool) nie jest uzyskiwanie wywołana po regulatora jest przedstawiona ..

przywozili to w VC

import SafariServices 

Kod:

  let url = NSURL(string: urlString)! 
      if #available(iOS 9.0, *) { 
       let safariVC = SFSafariViewController(URL: url) 
       safariVC.delegate = self 
       self.presentViewController(safariVC, animated: true, completion: { 
        self.hideHUD() 
       }) 
      } else { 
       // Fallback code 
      } 

here jest link do identyczny problem kogoś innego obliczu

Answer 1

Przymierz zakomentowanie żadnych animacji ładowania robisz i spróbuj bez tego.

... 
    // self.showHUD() 
    // self.hideHUD() 
... 

Jego powodu błędu w systemie iOS 10 wprowadzonego podczas poprawki zabezpieczeń, które nie pozwala obciążenie safariViewController przy użyciu paski postępu i ładowarki dodany jako window powyżej głównej window

Naprawdę chciałbym Apple miał udokumentował zmianę. Musiałem skomentować wskaźnik ładowania w mojej bieżącej aplikacji, aby działało.

Answer 2

natknąłem się na to jak widząc jakieś podobne problemy, które widziałem, kiedy próbuje użyć SafariViewController. Śledziłem moje problemy z używaniem przeglądarki SafariViewController, gdy pojawiało się wyskakujące okienko. Złożyłem kod, aby pokazać mój problem i możliwe rozwiązanie.

ViewController.swift:

/* 
This view controller tries to boil down to the essence of a problem seen 
when trying to use SafariViewController. The net result is DO NOT present 
the SafariViewController when a popup is present. 

This controller and the associated popup show 3 ways to 
present the SafariViewController: 

Always Good: This uses a button on the controller to simply call the 
showSVC() routine and never had a problem. 

Good: This is a work-around for the "Bad" case to follow. In this case, 
we are using a button in a popup to bring up the SafariViewController. 
The trick is to get rid of the popup before calling showSVC(). This is 
done by dismissing the popup immediately without animation and then 
adding a delay before calling showSVC(). Seems to work fine, but using 
delays to accomplish things always seems a bit suspect. Use at your own risk. 

Bad: When this goes bad, a blank white screen is presented with no way 
to escape. Using "Reset Content and Settings..." in the simulator can 
get one back to where it will work one time. It seemed originally that 
this worked on iOS9 but not on iOS10. But now seems to fail similarly 
on both iOS9 and iOS10. This case is dismissing the popup with animation 
while trying to bring up the SafariViewController. 

Other info: This view controller is embedded in a navigation controller - 
basically to provide a navigation bar and button to act as the anchor 
point for the popup. The popup provides two buttons that call back 
to this controller with the "PopButtonPressedProtocol". This controller 
uses the title in the popup's buttons to differentiate the "good" and 
"bad" cases. 

The problems shown by this example sounded similar to problems various 
others reported, but these reports may be for other reasons, which may 
or may not be similar. 
*/ 

import UIKit 
import SafariServices 

class ViewController: UIViewController, UIPopoverPresentationControllerDelegate, PopButtonPressedProtocol { 

@IBOutlet weak var btnAlwaysGood: UIButton! 
@IBOutlet weak var btnPopup: UIBarButtonItem! 

let webAddr = "http://www.google.com" 

func delay(_ delay: Double, closure:@escaping()->()) { 
    DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + Double(Int64(delay * Double(NSEC_PER_SEC)))/Double(NSEC_PER_SEC), execute: closure) 
} 

func showSVC() { 
    let svc = SFSafariViewController(url: URL(string: webAddr)!) 
    self.present(svc, animated: true, completion: nil) 
} 

func popButtonPressed(_ button: UIButton) { 
    if let title = button.currentTitle { 
     switch title { 
     case "Bad": 
      dismiss(animated: true, completion: nil) 
      showSVC() 
     case "Good": 
      dismiss(animated: false, completion: nil) 
      delay(0.5, closure: { self.showSVC() }) 
     default: 
      break 
     } 
    } 
} 

func popupButtonPressed() { 
    performSegue(withIdentifier: "popup", sender: nil) 
} 

func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle { // Needed for popup 
    return .none 
} 

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 
    btnAlwaysGood.addTarget(self,  action: #selector(showSVC),  for: .touchUpInside) 
    btnPopup.target = self 
    btnPopup.action = #selector(popupButtonPressed) 
} 

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if let vc = segue.destination as? PopVC { 
     vc.delegate = self 
     vc.modalPresentationStyle = .popover 
     vc.preferredContentSize = CGSize(width: 60, height: 100) 
     if let popover = vc.popoverPresentationController { 
      popover.permittedArrowDirections = .any 
      popover.delegate = self 
      popover.barButtonItem = navigationItem.rightBarButtonItem 
     } 
    } 
} 
} 

PopVC.swift:

import UIKit 

protocol PopButtonPressedProtocol : class { 
func popButtonPressed(_ button: UIButton) // protocol: 
} 

class PopVC: UIViewController { 

@IBOutlet weak var btnBad: UIButton! 
@IBOutlet weak var btnGood: UIButton! 

weak var delegate : PopButtonPressedProtocol? 

func buttonPressed(_ button: UIButton) { 
    delegate?.popButtonPressed(button) 
} 

override func viewDidLoad() { 
    super.viewDidLoad() 
    btnBad.addTarget(self, action: #selector(buttonPressed(_:)), for: .touchUpInside) 
    btnGood.addTarget(self, action: #selector(buttonPressed(_:)), for: .touchUpInside) 
} 
}