使用Swift 3，iOS 10.3.2进行FB登录成功登录后无法将用户恢复到应用程序

Question

我被Facebook卡住了，无法在用户登录成功后回到应用程序。我使用的是iOS 10.3.2的swift 3和xcode 9，我尝试过使用stackoverflow解决方案，但仍然无法正常工作。以下是我的代码：

**我在模拟器中测试过，它运行良好，这个问题只发生在设备上。

的AppDelegate：

import UIKit 

进口CoreData 进口FBSDKCoreKit

@UIApplicationMain 类的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 我也开启了钥匙串共享功能。在此先感谢

Answer 1

您尝试使用旧的Objective-C库，其中有一些问题与Swift代码（例如，我无法获得授权后的用户令牌）。尝试使用Swift Facebook库并重写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 
}