Milan Nosáľ Milan Nosáľ - 3 years ago 184
iOS Question

Facebook login shows an additional confirmation popup on iOS 11

I have implemented login through facebook using facebook SDK for swift. It works as expected on iOS 10.3, but on iOS 11 it shows and additional popup that asks the user to allow sign in through facebook.com.

security confirmation

This adds one more step in the login process that slows down the login process. Is there a way how to to configure the app to allow this by default, thus remove the annoying popup?

I am using facebook-sdk-swift 0.2.0 (FBSDK version is 4.26.0) added through cocoa pods.

Configuration in

info.plist
:

<key>FacebookAppID</key>
<string>xxxxxxxxxxxxxxx</string>
<key>FacebookDisplayName</key>
<string>XXXXX</string>
<key>LSApplicationQueriesSchemes</key>
<array>
<string>fbapi</string>
<string>fb-messenger-api</string>
<string>fbauth2</string>
<string>fbshareextension</string>
</array>
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
<key>NSExceptionDomains</key>
<dict>
<key>akamaihd.net</key>
<dict>
<key>NSIncludesSubdomains</key>
<true/>
<key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
<false/>
</dict>
<key>facebook.com</key>
<dict>
<key>NSIncludesSubdomains</key>
<true/>
<key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
<false/>
</dict>
<key>fbcdn.net</key>
<dict>
<key>NSIncludesSubdomains</key>
<true/>
<key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
<false/>
</dict>
</dict>
</dict>
<key>CFBundleURLTypes</key>
<array>
<dict>
<key>CFBundleURLName</key>
<string>facebook</string>
<key>CFBundleURLSchemes</key>
<array>
<string>fbxxxxxxxxxxxxxxx</string>
</array>
</dict>
</array>


Code in
AppDelegate
:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
return SDKApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)
}

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
return SDKApplicationDelegate.shared.application(app, open: url, options: options)
}


LoginController
has a custom login button with this in handler:

let loginManager = LoginManager()
loginManager.loginBehavior = .native
loginManager.logIn([ .publicProfile, .userFriends, .email, .custom("user_location"), .custom("user_education_history"), .custom("user_work_history") ], viewController: self) { loginResult in
}


I created an app from scratch to test it, shared on GitHub. Still does the same.

Answer Source

OK, so after several useless experiments I have been able to find a way to achieve what my client wanted. Aforementioned behavior is the result of a newer version of FBSDK. Once I downgraded from FBSDK 4.26.0 to 4.24.0 (Swift SDK version does not matter), the popup stopped showing. So if you are facing the same problem, and your clients (or you) don't want this popup, this might be a solution for you too.

I don't think facebook guys did this by accident, and this popup can allow some new iOS 11 feature. However, I was not able to distinguish any real new functionality - I only noticed that the newer version does not give you a choice if you want to login using native app or safari, but goes directly for the safari login. But since that was a requirement by my client as well, for me the choice was quite natural.

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