尝试使用FBSDK为迅速登录脸谱出来的时候iOS应用崩溃

Question

我在使用了FBSDK我的iOS应用程序的麻烦。登录似乎很好地工作，但立即退出崩溃的应用程序。

我使用的是斯威夫特4和FBSDK版本4.4。我怀疑，我用Google搜索我在网上找到的文件和其他解决方案没有使用，因为没有我发现已经为我工作完全相同的版本。这里是我的应用程序代理代码：

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

func application(_ application: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
        let handled: Bool = FBSDKApplicationDelegate.sharedInstance().application(application, open: url, sourceApplication: options[.sourceApplication] as? String, annotation: options[.annotation])
        return handled
    }

这里是我的注销代码：

@IBAction func btnFbLogoutClicked(_ sender: UIButton) {
        let loginManager : FBSDKLoginManager = FBSDKLoginManager()
        loginManager.logOut()
        self.performSegue(withIdentifier: "UnwindToLogin", sender: self)
    }

它崩溃并关闭应用程序的退出（）和不执行SEGUE。如果有人使用FBSDK和斯威夫特的相同版本我将不胜感激一些指引。

Answer 1

你应该在AppDelegate中添加缺少的方法，并按照我的按钮操作代码。它为我工作。希望这将是为你工作。

  import UIKit
  import FBSDKCoreKit

  @UIApplicationMain
  class AppDelegate: UIResponder, UIApplicationDelegate {
     var window: UIWindow?
     func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
    }
    func applicationWillResignActive(application: UIApplication) {    
        FBSDKAppEvents.activateApp()
    }
    func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
        return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation)
     }
  }

 //MARK: FacebookLogin Button
 @IBAction func btnFacebookLoginClicked(sender: AnyObject) {
    let fbLoginManager : FBSDKLoginManager = FBSDKLoginManager()
    fbLoginManager.logOut()
    fbLoginManager.loginBehavior = FBSDKLoginBehavior.Web //Without safari Browser
    fbLoginManager.logInWithReadPermissions(["email"], fromViewController: self, handler: { (result, error) -> Void in
        if (error != nil){
            let fbloginresult : FBSDKLoginManagerLoginResult = result
            if(fbloginresult.grantedPermissions.contains("email")){
                self.getFBUserData()
                fbLoginManager.logOut()
            }
        }else if result.isCancelled {
        print("Cancelled")
    }
    })
}