Possible Facebook documentation error that stops swift code from compiling? - ios

Question

So I am following the Facebook documentation on how to add a custom login button in iOS but I am not sure if this is a documentation error or something is up with what I had written into my project. I have followed it for verbatim.
I get errors at these lines:
"Extra argument in call ["public_profile", "user_friends", "email"]"
func loginButtonClicked() {
var login: FBSDKLoginManager = FBSDKLoginManager()
FBSDKLoginManager.logInWithReadPermissions(["public_profile", "user_friends", "email"], fromViewController: self) { (result, error) -> Void in
if let result = result where error == nil && !result.isCancelled {
// Successful login
} else {
// Canceled or error
}
}
};
}
Here below is what the rest of the ViewController looks like:
class LogInViewController: UIViewController {
#IBOutlet weak var loginButton: FBSDKLoginButton!
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
}
override func viewDidLoad() {
["public_profile", "email", "user_friends"]
super.viewDidLoad()
// Add a custom login button to your app
let myLoginButton: UIButton = UIButton(type: .Custom)
myLoginButton.backgroundColor = UIColor.darkGrayColor()
myLoginButton.frame = CGRectMake(0, 0, 180, 40)
myLoginButton.center = self.view.center
myLoginButton.setTitle("My Login Button", forState: .Normal)
// Handle cliks on the button
myLoginButton.addTarget(self,action: "loginButtonClicked", forControlEvents: .TouchUpInside)
// Add the button to the view
self.view!.addSubview(myLoginButton)
}
// Once the button is clicked, show the login dialogue.
func loginButtonClicked() {
var login: FBSDKLoginManager = FBSDKLoginManager()
FBSDKLoginManager.logInWithReadPermissions(["public_profile", "user_friends", "email"] /*Extra argument in call is here */, fromViewController: self) { (result, error) -> Void in
if let result = result where error == nil && !result.isCancelled {
// Successful login
} else {
// Canceled or error
}
}
};
}
TL;DR what is the exact problem and what is Xcode trying to tell me?

Answer 1

The Error is very simple that you are not parsing Object of FBSDKLoginManager that you are creating with following line:
var login: FBSDKLoginManager = FBSDKLoginManager()
So do the code like following:
func loginButtonClicked() {
let login: FBSDKLoginManager = FBSDKLoginManager()
login.logInWithReadPermissions(["public_profile", "email", "user_friends"], fromViewController: self) { (result, error) -> Void in
if let result = result where error == nil && !result.isCancelled {
// Successful login
} else {
// Canceled or error
}
}
}

Answer 2

Seems like the problem is the way you call the loginWithPermissions method. You could try writing it again, let xcode autocomplete for you and then press enterfor all the parameters, so that the right code is filled in for you.
However, this is an example of how calling the method should look like
loginManager.logInWithReadPermissions(["public_profile", "user_friends", "email"], fromViewController: self) { (result, error) -> Void in
if let result = result where error == nil && !result.isCancelled
// Successful login
} else {
// Canceled or error
}
}
Hope this helps you figure out your error. Let me know if it worked out :)