在转移到Swift 3之前，用户必须通过Facebook登录该应用程序，然后它会自动登录到您的Firebase帐户。一切都很好，但后来我转移到Swift 3.登录按钮仍然存在，但在它要求登录Facebook的许可后 - 没有任何反应。
在转到Swift 3之前，这是我的代码：
var loginButton: FBSDKLoginButton = FBSDKLoginButton()
override func viewDidLoad() {
super.viewDidLoad()
loginButton.hidden = true
FIRAuth.auth()?.addAuthStateDidChangeListener { auth, user in
if let user = user {
// User is signed in.
currentEmail = user.email!
print("DONE")
NSNotificationCenter.defaultCenter().postNotificationName("dontShowLogInView", object: nil)
} else {
// No user is signed in.
self.loginButton.center = self.view.center
self.loginButton.readPermissions = ["public_profile", "email", "user_friends"]
self.loginButton.delegate = self
self.view.addSubview(self.loginButton)
self.loginButton.hidden = false
}
}
// Optional: Place the button in the center of your view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
print("user logged in")
self.loginButton.hidden = true
activityIndicator.startAnimating()
if error != nil {
self.loginButton.hidden = false
activityIndicator.stopAnimating()
print("???")
//handle errors
} else if result.isCancelled {
self.loginButton.hidden = false
activityIndicator.stopAnimating()
let loginManager = FBSDKLoginManager()
loginManager.logOut()
//handle cancel
print("canceled")
} else {
let credential = FIRFacebookAuthProvider.credentialWithAccessToken(FBSDKAccessToken.currentAccessToken().tokenString)
FIRAuth.auth()?.signInWithCredential(credential) { (user, error) in
print("user logged to firebase app")
}
}
}
func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) {
print("user logged out")
}
这是移动到Swift 3之后的代码：
var loginButton: FBSDKLoginButton = FBSDKLoginButton()
override func viewDidLoad() {
super.viewDidLoad()
//getFBUserData()
loginButton.isHidden = true
FIRAuth.auth()?.addStateDidChangeListener { auth, user in
if let user = user {
// User is signed in.
currentEmail = user.email!
print("DONE")
print(currentEmail)
NotificationCenter.default.post(name: Notification.Name(rawValue: "dontShowLogInView"), object: nil)
} else {
// No user is signed in.
self.loginButton.center = self.view.center
self.loginButton.readPermissions = ["public_profile", "email", "user_friends"]
self.loginButton.delegate = self
self.view.addSubview(self.loginButton)
self.loginButton.isHidden = false
}
}
// Optional: Place the button in the center of your view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: NSError!) {
print("user logged in")
self.loginButton.isHidden = true
activityIndicator.startAnimating()
if error != nil {
self.loginButton.isHidden = false
activityIndicator.stopAnimating()
print("???")
//handle errors
} else if result.isCancelled {
self.loginButton.isHidden = false
activityIndicator.stopAnimating()
let loginManager = FBSDKLoginManager()
loginManager.logOut()
//handle cancel
print("canceled")
} else {
let credential = FIRFacebookAuthProvider.credential(withAccessToken: FBSDKAccessToken.current().tokenString)
FIRAuth.auth()?.signIn(with: credential) { (user, error) in
print("user logged to firebase app")
}
}
}
func loginButtonDidLogOut(_ loginButton: FBSDKLoginButton!) {
print("user logged out")
}