iOS - Problems connecting from own app to Dropbox when Dropbox App is installed

Hi Sir,

i am facing the similar issue ..... 

1) if "dropbox" app was already installed, then as per the documents, "This launches the official Dropbox iOS app (if installed), authenticates via the official app, then redirects back into the SDK" ... but it does not happens

2) if "dropbox" app was not installed, then there is no problem.(it shows the Authentication screen)

->> i followed exact steps which you guys are described in the tutorials ...  (thats why it is working for "non Dropbox app installed" iOS devices.

here is the code snippets related to authentication workflow

in AppDelegate.m  (in objective c)

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{     

      [PhotoPickerEngine.sharedEngine setupSocialNetworks];

}

- (BOOL)application😞UIApplication *)app openURL😞NSURL *)url options😞NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options

{

NSString *urlString = [[[url absoluteString] componentsSeparatedByString:@":"] objectAtIndex:0];

if ([urlString isEqualToString:@"db-xxxxxxxxxx”])

{

[PhotoPickerEngine.sharedEngine handleRedirectURLWithUrl:url]; //dropbox to handle

}

}

//swift code 

@objc public func setupSocialNetworks()

{        

DropboxClientsManager.setupWithAppKey(“APP_KEY”)

}

@objc public func handleRedirectURL( url: URL)

{

        DropboxClientsManager.handleRedirectURL(url, completion: { (authResult) in

            switch authResult {

            case .success(let token):

                print("Success! User is logged into Dropbox with token: \(token)")

                EventHub.post(DropboxLoginEvent())

                UserDefaults.standard.set(token.accessToken, forKey: Constants.keyAccessTokenDropbox)

            case .cancel:

                print("User canceld OAuth flow.")

            case .error(let error, let description):

                print("Error \(error): \(String(describing: description))")

            case .none:

                break

            }

        })

    }

  the version number of the Dropbox SDK    : 6.0.3

  the version number of the Dropbox iOS app : 258.2.2

  the version number of iOS : 15.0.1

can you please help me how to fix this issue?

Thanks ,

muthulingam