FBSDKGraphRequestHandler Swift 3 错误
FBSDKGraphRequestHandler Swift 3 error
我已经尝试调试我的整个应用程序,目前我有 3 个错误,都是同样的错误。我花了几个小时尝试自行调试这最后 3 个错误,但没有成功。当然,这3个错误都是一样的,而且我知道调试一次就可以全部调试
错误与 Facebook SDK 有关,特别是 FB SDK Graph Request Handler。
这是代码
func loginButton(_ loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: Error?) {
if let error = error {
print(error.localizedDescription)
return
}
else{
let credential = FacebookAuthProvider.credential(withAccessToken: FBSDKAccessToken.current().tokenString)
// If already anon user exists link with new user
if Auth.auth().currentUser != nil{
Auth.auth().currentUser!.link(with: credential) { (user, error) in
// ...
}
}
let req = FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "email,first_name, last_name, birthday, gender"], tokenString: FBSDKAccessToken.current().tokenString, version: nil, httpMethod: "GET")
req ? .start(completionHandler: {
(connection, result, error: NSError!) - > Void in
if (error == nil) {
print("result \(result)")
Auth.auth() ? .signIn(with: credential) {
(user, error) in
if error != nil {
print("Login failed. \(error)")
} else {
print("Logged in! \(user)")
FirebaseUtility.sharedInstance.setUser(user!)
let name = String.init(format: "%@ %@", result.value(forKey: "first_name") as!String, result.value(forKey: "last_name") as!String)
FirebaseUtility.sharedInstance.editUserValue(name, key: "name")
if (result.object(forKey: "gender") != nil) {
let gender = result.object(forKey: "gender") as!String
FirebaseUtility.sharedInstance.editUserValue(gender.capitalized, key: "gender")
}
if (result.object(forKey: "email") != nil) {
let gender = result.object(forKey: "email") as!String
FirebaseUtility.sharedInstance.editUserValue(gender.capitalized, key: "email")
}
if self.isSignupflow == true {
FirebaseUtility.sharedInstance.sendToken()
// this user hasn't completed his profile so show him profile page
let vc: SignupViewController = SignupViewController(nibName: "SignupViewController", bundle: nil)
self.present(vc, animated: true, completion: nil)
} else {
FirebaseUtility.sharedInstance.isFirstTimeUser {
(isFirstTimeUser) in
if isFirstTimeUser {
FirebaseUtility.sharedInstance.sendToken()
// this user hasn't completed his profile so show him profile page
let vc: SignupViewController = SignupViewController(nibName: "SignupViewController", bundle: nil)
self.present(vc, animated: true, completion: nil)
} else {
// take him into app
// self.loginSuccessful()
let vc: RecordViewControllerNew = RecordViewControllerNew(nibName: "RecordViewControllerNew", bundle: nil)
vc.isBackButtonHidden = true
self.present(vc, animated: true, completion: nil)
}
}
}
}
}
}
发生的错误是:
Cannot convert value of type '(, _, NSError!) ->Void' to expected argument type 'FBSDKGraphRequestHandler!'
它出现在代码的这一行
req ? .start(completionHandler: {
(connection, result, error: NSError!) - > Void
任何帮助将不胜感激,我知道一旦解决了这个错误,就会产生更多错误,但这就是编码的工作原理:)
谢谢!
FBSDKGraphRequestHandler
具有可选的 Error?
作为最后一个参数而不是 NSError!
,因此将完成块从 req?.start(completionHandler: { (connection, result, error: NSError!) - > Void
更改为 req?.start(completionHandler: { (connection, result, error) in
将减少该错误。
此外,在更改此设置后,您会收到新的警告,例如。
Expression of type 'FBSDKGraphRequestConnection?' is unused
所以只需添加 _ =
作为 req?.start
的前缀。
_ = req?.start(completionHandler: { (connection, result, error) in
//Add your code here
})
我已经尝试调试我的整个应用程序,目前我有 3 个错误,都是同样的错误。我花了几个小时尝试自行调试这最后 3 个错误,但没有成功。当然,这3个错误都是一样的,而且我知道调试一次就可以全部调试
错误与 Facebook SDK 有关,特别是 FB SDK Graph Request Handler。
这是代码
func loginButton(_ loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: Error?) {
if let error = error {
print(error.localizedDescription)
return
}
else{
let credential = FacebookAuthProvider.credential(withAccessToken: FBSDKAccessToken.current().tokenString)
// If already anon user exists link with new user
if Auth.auth().currentUser != nil{
Auth.auth().currentUser!.link(with: credential) { (user, error) in
// ...
}
}
let req = FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "email,first_name, last_name, birthday, gender"], tokenString: FBSDKAccessToken.current().tokenString, version: nil, httpMethod: "GET")
req ? .start(completionHandler: {
(connection, result, error: NSError!) - > Void in
if (error == nil) {
print("result \(result)")
Auth.auth() ? .signIn(with: credential) {
(user, error) in
if error != nil {
print("Login failed. \(error)")
} else {
print("Logged in! \(user)")
FirebaseUtility.sharedInstance.setUser(user!)
let name = String.init(format: "%@ %@", result.value(forKey: "first_name") as!String, result.value(forKey: "last_name") as!String)
FirebaseUtility.sharedInstance.editUserValue(name, key: "name")
if (result.object(forKey: "gender") != nil) {
let gender = result.object(forKey: "gender") as!String
FirebaseUtility.sharedInstance.editUserValue(gender.capitalized, key: "gender")
}
if (result.object(forKey: "email") != nil) {
let gender = result.object(forKey: "email") as!String
FirebaseUtility.sharedInstance.editUserValue(gender.capitalized, key: "email")
}
if self.isSignupflow == true {
FirebaseUtility.sharedInstance.sendToken()
// this user hasn't completed his profile so show him profile page
let vc: SignupViewController = SignupViewController(nibName: "SignupViewController", bundle: nil)
self.present(vc, animated: true, completion: nil)
} else {
FirebaseUtility.sharedInstance.isFirstTimeUser {
(isFirstTimeUser) in
if isFirstTimeUser {
FirebaseUtility.sharedInstance.sendToken()
// this user hasn't completed his profile so show him profile page
let vc: SignupViewController = SignupViewController(nibName: "SignupViewController", bundle: nil)
self.present(vc, animated: true, completion: nil)
} else {
// take him into app
// self.loginSuccessful()
let vc: RecordViewControllerNew = RecordViewControllerNew(nibName: "RecordViewControllerNew", bundle: nil)
vc.isBackButtonHidden = true
self.present(vc, animated: true, completion: nil)
}
}
}
}
}
}
发生的错误是:
Cannot convert value of type '(, _, NSError!) ->Void' to expected argument type 'FBSDKGraphRequestHandler!'
它出现在代码的这一行
req ? .start(completionHandler: {
(connection, result, error: NSError!) - > Void
任何帮助将不胜感激,我知道一旦解决了这个错误,就会产生更多错误,但这就是编码的工作原理:)
谢谢!
FBSDKGraphRequestHandler
具有可选的 Error?
作为最后一个参数而不是 NSError!
,因此将完成块从 req?.start(completionHandler: { (connection, result, error: NSError!) - > Void
更改为 req?.start(completionHandler: { (connection, result, error) in
将减少该错误。
此外,在更改此设置后,您会收到新的警告,例如。
Expression of type 'FBSDKGraphRequestConnection?' is unused
所以只需添加 _ =
作为 req?.start
的前缀。
_ = req?.start(completionHandler: { (connection, result, error) in
//Add your code here
})