facebook快速parsing注册

我一直在努力创造一个快速的Facebooklogin/注册function。 我一直在寻找教程，但一直没能find任何东西。 所以我一直在努力自己做。 它似乎工作，但为什么不把我的facebookName，性别和图像保存在数据库中？ 这是保存在模拟器，但不是当我使用我的ios 8设备？

我收到这个日志消息“用户注册并通过Facebooklogin！”，一个新的用户被添加到parsing类，但不是名称，图像和性别…

@IBAction func login(sender: UIButton!) { var permissionArray = ["user_about_me", "user_relationships", "user_birthday", "user_location"] PFFacebookUtils.initializeFacebook() PFFacebookUtils.logInWithPermissions(permissionArray, block: { (user: PFUser!, error: NSError!) in println(user) if user == nil { println(error.localizedDescription) } else { if user.isNew { var userQuery = PFUser.query() userQuery.getObjectInBackgroundWithId(PFUser.currentUser().objectId) { (userObject: PFObject!, error: NSError!) -> Void in var fbRequest = FBRequest.requestForMe() fbRequest.startWithCompletionHandler { (connection: FBRequestConnection!, result:AnyObject!, error: NSError!) in if error == nil { //FACEBOOK DATA IN DICTIONARY var userData = result as NSDictionary var faceBookId = userData.objectForKey("id") as NSString var faceBookName = userData.objectForKey("first_name") as NSString var faceBookMiddle = userData.objectForKey("middle_name") as NSString var faceBookGender = userData.objectForKey("gender") as NSString var url:NSURL = NSURL.URLWithString(NSString(format:"https://graph.facebook.com/%@/picture?width=320", faceBookId)) var err: NSError? var imageData :NSData = NSData.dataWithContentsOfURL(url, options: NSDataReadingOptions.DataReadingMappedIfSafe, error: &err) var imageFile = PFFile(name: "image.jpg", data: imageData) as PFFile println(userData) userObject.setObject(faceBookName, forKey: "name") userObject.setObject(imageFile, forKey: "file") userObject.setObject(faceBookGender, forKey: "gender") userObject.saveInBackground() var sharedInstance:userSingleton = userSingleton.sharedInstance sharedInstance.userName = (userObject.objectForKey("name") as NSString) sharedInstance.userGender = (userObject.objectForKey("gender") as NSString) (userObject.objectForKey("file") as PFFile).getDataInBackgroundWithBlock { (theImageData: NSData!, error: NSError!) -> Void in println(error) if error == nil { sharedInstance.userImage = UIImage(data:theImageData) } self.performSegueWithIdentifier("LoginSegue", sender: self) } } } } println("User signed up and logged in through Facebook!") } else { println("User logged in through Facebook!") } } }) } } 

Answer 1

假设你使用Parse，下面是我如何做的 。 我个人创build了一个类Utils.swift ，我把所有的东西，我想要重用（或我不想在我的ViewControllers中）：

 class Utils { class func notLoggedIn() -> Bool { let user = PFUser.currentUser() // here I assume that a user must be linked to Facebook return user == nil || !PFFacebookUtils.isLinkedWithUser(user) } class func loggedIn() -> Bool { return !notLoggedIn() } class func logInWithFacebook() { PFFacebookUtils.logInWithPermissions(["public_profile", "user_friends"]) { (user: PFUser!, error: NSError!) -> Void in if user == nil { NSLog("The user cancelled the Facebook login (user is nil)") } else { NSLog("The user successfully logged in with Facebook (user is NOT nil)") // HERE I SET A USER POINTER TO THE INSTALLATION // That way we can send push notifications to specific users if let installation = PFInstallation.currentInstallation() { installation["user"] = PFUser.currentUser() installation.saveEventually() } // THEN I GET THE USERNAME AND fbId Utils.obtainUserNameAndFbId() } } } class func obtainUserNameAndFbId() { if notLoggedIn() { return } let user = PFUser.currentUser() // Won't be nil because is logged in // RETURN IF WE ALREADY HAVE A USERNAME AND FBID // Note that we check the fbId because Parse automatically fills in the username with random numbers if let fbId = user["fbId"] as? String { if !fbId.isEmpty { println("we already have a username and fbId -> return") return } } // REQUEST TO FACEBOOK println("performing request to FB for username and IDF...") if let session = PFFacebookUtils.session() { if session.isOpen { println("session is open") FBRequestConnection.startForMeWithCompletionHandler({ (connection: FBRequestConnection!, result: AnyObject!, error: NSError!) -> Void in println("done me request") if error != nil { println("facebook me request - error is not nil :(") } else { println("facebook me request - error is nil :)") println(result) // You have 2 ways to access the result: // 1) println(result["name"]) println(result["id"]) // 2) println(result.name) println(result.objectID) // Save to Parse: PFUser.currentUser().username = result.name PFUser.currentUser().setValue(result.objectID, forKey: "fbId") PFUser.currentUser().saveEventually() // Always use saveEventually if you want to be sure that the save will succeed } }) } } } } 

然后当你想执行login时，你可以简单地调用Utils.logInWithFacebook() 。

请注意，由于facebook我的请求可能会失败，因此无法保证您将用户名和Facebook ID成功保存到Parse。 这就是为什么我创build方法Utils.obtainUserNameAndFbId() ，我在application(_: didFinishLaunchingWithOptions)调用application(_: didFinishLaunchingWithOptions) （它可以被称为每次启动，因为它只会执行请求，直到成功FB）。