Facebook登录iOS错误：操作无法完成。 （com.facebook.sdk.core错误3.）

Question

我收到错误代码：

The operation couldn’t be completed. (com.facebook.sdk.core error 3.)

在我的应用上登录Facebook并且不确定原因。这是我的viewController代码：

import FBSDKCoreKit
import FBSDKLoginKit

@IBOutlet weak var facebookLoginButton: FBSDKLoginButton!


  override func viewDidLoad() {
    super.viewDidLoad()

  facebookLoginButton.readPermissions = ["public_profile", "email", "user_friends"]
    facebookLoginButton.delegate = self

  }

  //MARK: Facebook Login

  func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
    if error == nil {

      print("Login Complete")

      performSegueWithIdentifier("facebookSegue", sender: self)

    } else {

      print(error.localizedDescription)

    }
  }

  func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) {
    print("User logged out")
  }

这是appDelegate：

import FBSDKCoreKit

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.

      //Facebook login
        return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
    }

  func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool {

    //Facebook login
    return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation)
  }

我认为代码是正确的，但也许我错过了什么，感谢任何帮助！

Answer 1

如果将Facebook iOS SDK升级到版本4.39.0，则存在一个导致此错误的错误。降级到4.38.1将帮助您解决此问题。确保同时降级FBSDKCoreKit和FBSDKLoginKit。

pod 'FBSDKCoreKit', '~> 4.38.0'
pod 'FBSDKLoginKit', '~> 4.38.0'

请确保清理构建文件夹并重新构建SDK。

Answer 2

能够弄清楚。 plist文件必须修改如下：

<key>LSApplicationQueriesSchemes</key>
    <array>
      <string>fb</string>
      <string>fbapi</string>
      <string>fbauth2</string>
      <string>fbshareextension</string>
      <string>fb-messenger-api</string>
    </array>

添加后它起作用了！