解析 Facebook logInBackgroundWithReadPermissions (Swift) [英] Parse Facebook logInInBackgroundWithReadPermissions (Swift)

问题描述

我已经成功设置了 Parse (1.7.1) SDKs 和 Facebook(v4) SDKs，设置了桥接头文件和 AppDelegate.swift.现在在我的 ViewController 中，我正在尝试创建一个 Facebook 登录名，并且我正在尝试使用 中给出的代码'解析 iOS 文档 - Facebook 注册 &登录'.

I have set both Parse (1.7.1) SDKs and Facebook(v4) SDKs successfully, set bridging header files and AppDelegate.swift. Now in my ViewController, I am trying to create a Facebook Login and I am trying to use the code given in 'Parse iOS Documentation - Facebook SignUp & Login'.

  PFFacebookUtils.logInInBackgroundWithReadPermissions(permissions, {
     (user: PFUser!, error: NSError!) -> Void in
       if let user = user {
        if user.isNew {
           println("User signed up and logged in through Facebook!")
        } else {
           println("User logged in through Facebook!")
        }
       } else {
         println("Uh oh. The user cancelled the Facebook login.")
        }
    }) 

然而，当我将它粘贴到我的 ViewController.swift > ViewDidLoad 中时，我收到了这个错误:

However when I paste it in my ViewController.swift > ViewDidLoad, I am receiving this error:

- Extra argument in call      // for { at the first line

谁能帮我解决这个问题?

Can anyone please help me sort this out?

给出的脚本在语法方面对我有用，但是，现在我不断收到呃，不.用户取消了 Facebook 登录."甚至在它请求许可之前；当 facebook 页面仍在加载时.. 我正在尝试的用户已经被这个特定的应用程序接受了.看一看:http://imgur.com/5yDs1s1

The script given has worked for me in terms of syntax, however, now I keep getting "Uh no. The user cancelled the Facebook login." even before it asks for permissions; while the facebook page is still loading.. And the user I am trying is already accepted for this particular app. Take a look: http://imgur.com/5yDs1s1

推荐答案

我通过在 ViewDidLoad 中添加此代码找到了一个解决方法:

I found a work-around by adding this code in ViewDidLoad:

   if PFUser.currentUser() != nil {

        self.performSegueWithIdentifier("loginSegue", sender: self)

    }

一起放置在按钮中:

   @IBAction func Facebook(sender: AnyObject) {

    var permissions = ["public_profile"]

    PFFacebookUtils.logInInBackgroundWithReadPermissions(permissions) { (user: PFUser?, error: NSError?) -> Void in
        if let user = user {
            if user.isNew {
                println("User signed up and logged in through Facebook!")

                self.facebookButton.alpha = 0



                self.performSegueWithIdentifier("signUp", sender: self)

            } else {

               println("User logged in through Facebook!")

                self.facebookButton.alpha = 0

                 let currentUser = PFUser.currentUser()

                self.performSegueWithIdentifier("loginSegue", sender: self)

            }

        } else {

            println("Uh oh. The user cancelled the Facebook login.")

            println("User cancelled")

        }


    }

也在应用委托中:

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

    PFFacebookUtils.initializeFacebookWithApplicationLaunchOptions(launchOptions)

    PFUser.enableRevocableSessionInBackground()


    return true
}

和

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

桥接标题:

  #import <FBSDKCoreKit/FBSDKCoreKit.h>
  #import <ParseFacebookUtilsV4/PFFacebookUtils.h>
  #import <Parse/Parse.h>
  #import <Bolts/Bolts.h>
  #import <FBSDKLoginKit/FBSDKLoginKit.h>

我不知道它有多真实，但它解决了我的问题

I don't know how far it is true but it solved my problem

这篇关于解析 Facebook logInBackgroundWithReadPermissions (Swift)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！