使用Swift 3，iOS 10.3.2進行FB登錄成功登錄後無法將用戶恢復到應用程序

Question

我被Facebook卡住了，無法在用戶登錄成功後回到應用程序。我使用的是iOS 10.3.2的swift 3和xcode 9，我嘗試過使用stackoverflow解決方案，但仍然無法正常工作。以下是我的代碼：

**我在模擬器中測試過，它運行良好，這個問題只發生在設備上。

的AppDelegate：

import UIKit 

進口CoreData 進口FBSDKCoreKit

@UIApplicationMain 類的AppDelegate：UIResponder，UIApplicationDelegate {

var window: UIWindow? 

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool { 

    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) 
} 

func applicationWillResignActive(_ application: UIApplication) { 
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 
    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. 
} 

func applicationDidEnterBackground(_ application: UIApplication) { 
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 
} 

func applicationWillEnterForeground(_ application: UIApplication) { 
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. 
} 

func applicationDidBecomeActive(_ application: UIApplication) { 
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 

FBSDKAppEvents.activateApp() 
} 

func applicationWillTerminate(_ application: UIApplication) { 
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 
    // Saves changes in the application's managed object context before the application terminates. 
    self.saveContext() 
} 

// MARK: - Core Data stack 

lazy var persistentContainer: NSPersistentContainer = { 
    /* 
    The persistent container for the application. This implementation 
    creates and returns a container, having loaded the store for the 
    application to it. This property is optional since there are legitimate 
    error conditions that could cause the creation of the store to fail. 
    */ 
    let container = NSPersistentContainer(name: "XXXX") 
    container.loadPersistentStores(completionHandler: { (storeDescription, error) in 
     if let error = error as NSError? { 
      // Replace this implementation with code to handle the error appropriately. 
      // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. 

      /* 
      Typical reasons for an error here include: 
      * The parent directory does not exist, cannot be created, or disallows writing. 
      * The persistent store is not accessible, due to permissions or data protection when the device is locked. 
      * The device is out of space. 
      * The store could not be migrated to the current model version. 
      Check the error message to determine what the actual problem was. 
      */ 
      fatalError("Unresolved error \(error), \(error.userInfo)") 
     } 
    }) 
    return container 
}() 

// MARK: - Core Data Saving support 

func saveContext() { 
    let context = persistentContainer.viewContext 
    if context.hasChanges { 
     do { 
      try context.save() 
     } catch { 
      // Replace this implementation with code to handle the error appropriately. 
      // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. 
      let nserror = error as NSError 
      fatalError("Unresolved error \(nserror), \(nserror.userInfo)") 
     } 
    } 
} 

}

info.plist中：https://pastebin.com/bEuJdkF7 我也開啓了鑰匙串共享功能。在此先感謝

Answer 1

您嘗試使用舊的Objective-C庫，其中有一些問題與Swift代碼（例如，我無法獲得授權後的用戶令牌）。嘗試使用Swift Facebook庫並重寫AppDelegate的方法

import FacebookCore 
import FacebookLogin 
@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate { 

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


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