Facebook Login funktioniert nicht in swift

Question

Ich versuche, Facebook-Login in meiner App zu implementieren, aber wenn ich versuche, es zu Facebook App einloggen und kommt zurück zu meinem Spiel, aber der Login-Button wird nicht ausloggen und wenn ich es versuche Wenn Sie Informationen wie Zugriffstoken, erteilte Berechtigungen oder abgelehnte Berechtigungen erhalten, ist dies gleich null. Dies ist der Code ich habe:

import Foundation 
class IntroScene: SKScene, FBSDKLoginButtonDelegate { 
let loginButton: FBSDKLoginButton = { 
    let button = FBSDKLoginButton() 
    button.readPermissions = ["email"] 
    return button 
}() 

override func didMove(to view: SKView) { 
    self.backgroundColor = UIColor.black 

    view.addSubview(loginButton) 
    loginButton.center = (self.view?.center)! 
    loginButton.delegate = self 
} 

func loginButtonDidLogOut(_ loginButton: FBSDKLoginButton!) { 

} 

func loginButtonWillLogin(loginButton: FBSDKLoginButton!) -> Bool { 
    return true 
} 

func loginButton(_ loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: Error!) { 
    if(error == nil) 
    { 
     print("login complete") 
     //print(FBSDKAccessToken.current()) -> crashes because its nil 
     //print(result.grantedPermissions) -> crashes its nil 
    } 
    else{ 
     print(error.localizedDescription) 
    } 
} 
} 

mein info.plist sieht wie folgt aus:

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> 
<plist version="1.0"> 
<dict> 
    <key>UIViewControllerBasedStatusBarAppearance</key> 
    <false/> 
    <key>LSApplicationQueriesSchemes</key> 
    <array> 
     <string>fbapi</string> 
     <string>fb-messenger-api</string> 
     <string>fbauth2</string> 
     <string>fbshareextension</string> 
    </array> 
    <key>NSAppTransportSecurity</key> 
    <dict> 
     <key>NSExceptionDomains</key> 
     <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> 
      <key>akamaihd.net</key> 
      <dict> 
       <key>NSIncludesSubdomains</key> 
       <true/> 
       <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> 
       <false/> 
      </dict> 
     </dict> 
    </dict> 
    <key>CFBundleURLTypes</key> 
    <array> 
     <dict> 
      <key>CFBundleURLSchemes</key> 
      <array> 
      <string>//fbmyid</string> 
     </array> 
    </dict> 
</array> 
<key>FacebookAppID</key> 
<string>//myid</string> 
<key>FacebookDisplayName</key> 
<string>Crazy Traffic Saga</string> 
<key>CFBundleDevelopmentRegion</key> 
<string>en</string> 
<key>CFBundleExecutable</key> 
<string>$(EXECUTABLE_NAME)</string> 
<key>CFBundleIdentifier</key> 
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> 
<key>CFBundleInfoDictionaryVersion</key> 
<string>6.0</string> 
<key>CFBundleName</key> 
<string>$(PRODUCT_NAME)</string> 
<key>CFBundlePackageType</key> 
<string>APPL</string> 
<key>CFBundleShortVersionString</key> 
<string>1.0</string> 
<key>CFBundleSignature</key> 
<string>????</string> 
<key>CFBundleVersion</key> 
<string>1</string> 
<key>LSRequiresIPhoneOS</key> 
<true/> 
<key>UILaunchStoryboardName</key> 
<string>LaunchScreen</string> 
<key>UIMainStoryboardFile</key> 
<string>Main</string> 
<key>UIRequiredDeviceCapabilities</key> 
<array> 
    <string>armv7</string> 
</array> 
<key>UISupportedInterfaceOrientations</key> 
<array> 
    <string>UIInterfaceOrientationPortrait</string> 
    <string>UIInterfaceOrientationLandscapeLeft</string> 
    <string>UIInterfaceOrientationLandscapeRight</string> 
</array> 
<key>UISupportedInterfaceOrientations~ipad</key> 
<array> 
    <string>UIInterfaceOrientationPortrait</string> 
    <string>UIInterfaceOrientationPortraitUpsideDown</string> 
    <string>UIInterfaceOrientationLandscapeLeft</string> 
    <string>UIInterfaceOrientationLandscapeRight</string> 
</array> 

Answer 1

Dank diesen Beitrag: FB Login using Swift 3 not returning any values and not get back the user to the App after successful login fand ich das Problem. Es gibt eine weitere Funktion, die zu App Delegate hinzugefügt werden sollte. Hier ist, wie ich Facebook-Login bekam

• herunterladen SDK arbeiten und fügen

• einrichten info.plist nach Facebook-Website

• In AppDelegate Projekt hinzugefügt:

  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { 
  // Override point for customization after application launch. 
  FIRApp.configure() 
  FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions) 
  
  return true 
  } 
  
  public func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool { 
  
      return FBSDKApplicationDelegate.sharedInstance().application(
       app, 
       open: url as URL!, 
       sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String, 
      annotation: options[UIApplicationOpenURLOptionsKey.annotation] 
  ) 
  } 
  
  public func application(_ application: UIApplication, open url: URL,  sourceApplication: String?, annotation: Any) -> Bool { 
       return FBSDKApplicationDelegate.sharedInstance().application(
        application, 
        open: url as URL!, 
        sourceApplication: sourceApplication, 
        annotation: annotation) 
  } 
  

• In der SKScene zeige ich den Button (könnte auch in einem View Controller sein):

  class IntroScene: SKScene, FBSDKLoginButtonDelegate { 
      override func didMove(to view: SKView) { 
       self.backgroundColor = UIColor.black 
       let loginButton = FBSDKLoginButton() 
       loginButton.center = (self.view?.center)! 
       self.view?.addSubview(loginButton) 
       loginButton.frame = CGRect(x: 0, y: 0, width: 360, height: 60) // makes it bigger 
       loginButton.center = CGPoint(x: self.frame.midX, y: self.frame.midY + 90) 
       loginButton.delegate = self 
       loginButton.readPermissions = ["public_profile", "email"] 
       if let _ = FBSDKAccessToken.current(){ 
        //already logged in 
        fetchProfile() 
       } 
      } 
      func fetchProfile() { 
      let parameters = ["fields": "first_name, email, last_name, picture"] 
  
      FBSDKGraphRequest(graphPath: "me", parameters: parameters).start(completionHandler: { (connection, user, requestError) -> Void in 
  
       if requestError != nil { 
        print("----------ERROR-----------") 
        print(requestError) 
        return 
       } 
       let userData = user as! NSDictionary 
       let email = userData["email"] as? String 
       let firstName = userData["first_name"] as? String 
       let lastName = userData["last_name"] as? String 
       var pictureUrl = "" 
       if let picture = userData["picture"] as? NSDictionary, let data = picture["data"] as? NSDictionary, let url = data["url"] as? String { 
        pictureUrl = url 
        print(pictureUrl) 
       } 
      }) 
      } 
  
  } 
  

Answer 2

diesen Code in Ihrem AppDelegate.swift Put

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { 
     return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions) 
} 



func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool { 
     return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation) 
} 

prüfen FacebookAccessToken Sie in Ihrem Facebook Button Klicken Sie auf ViewController.

if FBSDKAccessToken.currentAccessToken() != nil { 
      FBSDKLoginManager().logOut() 
      return 
} 

let login:FBSDKLoginManager = FBSDKLoginManager() 
login.logInWithReadPermissions(["email"], handler: { (result:FBSDKLoginManagerLoginResult!, error:NSError!) -> Void in 
    if(error != nil){ 
      FBSDKLoginManager().logOut() 
    }else if(result.isCancelled){ 
      FBSDKLoginManager().logOut() 
    }else{ 
       //Handle login success 
      self.returnUserData() 
     } 
}) 

Erhalten Sie die Antwort von FacebookData.

func returnUserData() 
{ 
    let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "email"]) 
    graphRequest.startWithCompletionHandler({ (connection, result, error) -> Void in 
     if ((error) != nil) 
     { 
      // Process error 
      print("Error: \(error)") 
     } 
     else 
     { 
      print(result) 

     } 
    }) 
} 

Answer 3

Vergessen Sie nicht, Keychain-Sharing-Projekt Ziele -> Funktionen -> Schlüsselanhänger Sharing -> Kippschalter ON Keychain Sharing status

können Sie diese http://ashishkakkad.com/2015/05/facebook-login-swift-language-ios/

Answer 4

Jetzt Angebote Facebook folgen Swift sdk für deine iOS App. Swift sdk for Facebook

Überprüfen Sie, dass aus und haben Spaß