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Re: Can't close the page after authentication

Hi,

I have the same problem as described: The Dropbox window doesn’t close when I click Allow.

I did use the "Handle redirect back into SDK" step implemented in my AppDelegate.swift

and I also implement the handler in SceneDelegate.swift.

In SceneDelegate.swift I got the error „missing argument for parameter 'completion' in call“ when using the func:

func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
        if let url = URLContexts.first?.url {
            print(url)
            
            if let authResult = DropboxClientsManager.handleRedirectURL(url) {
                switch authResult {
                case .success:
                    print("Success! User is logged into Dropbox.")
                case .cancel:
                    print("Authorization flow was manually canceled by user!")
                case .error(_, let description):
                    print("Error: \(description)")
                }
            }
        }
    }

So I tried to fix it with:

  func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
        if let url = URLContexts.first?.url {
            print(url)
            
             let oauthCompletion: DropboxOAuthCompletion = {
                  if let authResult = $0 {
                      switch authResult {
                      case .success:
                          print("Success! User is logged into DropboxClientsManager.")
                      case .cancel:
                          print("Authorization flow was manually canceled by user!")
                      case .error(_, let description):
                          print("Error: \(String(describing: description))")
                      }
                  }
                }
        }
    }

Now the code works, but the window still stays.

Someone know where my problem is?

Thank you!

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Accepted answers

Greg-DB

Right, you need to make sure you're actually calling handleRedirectURL. (In the code you posted, that was missing.)

If you are using scenes, you need to also do this in SceneDelegate.swift. (Apologies that isn't documented yet.) The SDK has changed a bit since the code in that issue was written, but you can do it like this:

    func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
        if let url = URLContexts.first?.url {
            let oauthCompletion: DropboxOAuthCompletion = {
              if let authResult = $0 {
                  switch authResult {
                  case .success:
                      print("Success! User is logged into DropboxClientsManager.")
                  case .cancel:
                      print("Authorization flow was manually canceled by user!")
                  case .error(_, let description):
                      print("Error: \(String(describing: description))")
                  }
              }
            }
            DropboxClientsManager.handleRedirectURL(url, completion: oauthCompletion)
        }
    }

All comments

Greg-DB

@Edlo11 You seem to be missing some of the relevant code in your fixed version. Make sure you're following the instructions as currently documented.

Please update your code accordingly, and make sure you're using the latest version of the SDK, and let me know if that's still not working. Thanks!

Edlo11

Hi Greg,

thanks for the quick response.

I'm not sure if I understand you correctly, because in the Documentation there is nothing written about the "SceneDelegate.swift".

My "AppDelegate.swift" is the same as in the Documentation.

My "SceneDelegate.swift" is as I have described it before respectively from iOS, 13.1, url-handler not called #259 .

Do you mean that I have to add

 let canHandleUrl = DropboxClientsManager.handleRedirectURL(url, completion: oauthCompletion)
                return canHandleUrl

to the "SceneDelegate.swift" ? Then I can't build due to errors.

Greg-DB

Right, you need to make sure you're actually calling handleRedirectURL. (In the code you posted, that was missing.)

    func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
        if let url = URLContexts.first?.url {
            let oauthCompletion: DropboxOAuthCompletion = {
              if let authResult = $0 {
                  switch authResult {
                  case .success:
                      print("Success! User is logged into DropboxClientsManager.")
                  case .cancel:
                      print("Authorization flow was manually canceled by user!")
                  case .error(_, let description):
                      print("Error: \(String(describing: description))")
                  }
              }
            }
            DropboxClientsManager.handleRedirectURL(url, completion: oauthCompletion)
        }
    }