[英]Handling Errors in New Firebase and Swift
我正在嘗試使用 swift 和 firebase 在 iOS 項目中創建用戶按鈕時添加錯誤處理:
這是按鈕的代碼:
@IBAction func Register(sender: AnyObject) {
if NameTF.text == "" || EmailTF.text == "" || PasswordTF.text == "" || RePasswordTF == "" || PhoneTF.text == "" || CityTF.text == ""
{
let alert = UIAlertController(title: "عذرًا", message:"يجب عليك ملىء كل الحقول المطلوبة", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
} else {
if PasswordTF.text != RePasswordTF.text {
let alert = UIAlertController(title: "عذرًا", message:"كلمتي المرور غير متطابقتين", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
} else {
FIRAuth.auth()?.createUserWithEmail(EmailTF.text!, password: PasswordTF.text!, completion: { user, error in
print(error)
if error != nil {
let errorCode = FIRAuthErrorNameKey
switch errorCode {
case "FIRAuthErrorCodeEmailAlreadyInUse":
let alert = UIAlertController(title: "عذرًا", message:"الإيميل مستخدم", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
case "FIRAuthErrorCodeUserNotFound":
let alert = UIAlertController(title: "عذرًا", message:"المستخدم غير موجود", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
case "FIRAuthErrorCodeInvalidEmail":
let alert = UIAlertController(title: "عذرًا", message:"الإيميل غير صحيح", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
case "FIRAuthErrorCodeNetworkError":
let alert = UIAlertController(title: "عذرًا", message:"خطأ في الاتصال بالانترنت", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
default:
let alert = UIAlertController(title: "عذرًا", message:"خطأ غير معروف", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "نعم", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
}
} else {
FIRAuth.auth()?.signInWithEmail(self.EmailTF.text!, password: self.PasswordTF.text!, completion: { (user: FIRUser?, error: NSError?) in
if let error = error {
print(error.localizedDescription)
} else {
self.ref.child("UserProfile").child(user!.uid).setValue([
"email": self.EmailTF.text!,
"name" : self.NameTF.text!,
"phone": self.PhoneTF.text!,
"city" : self.CityTF.text!,
])
print("Sucess")
// self.performSegueWithIdentifier("SignUp", sender: nil)
}
})
} //else
})
} //Big else
} //Big Big else
}
}//end of
我不確定 switch 語句中錯誤的語法是否正確!
因為當我在模擬器中測試它時,它總是給我默認情況,這是未知錯誤! + 我在文檔中找不到語法: https : //firebase.google.com/docs/auth/ios/errors
那么,使用新的 firebase 和 swift 添加錯誤處理的正確語法是什么!
實際上,我已經為此苦苦掙扎了很長時間,並發現了問題所在。 我已經嘗試了上面答案中發布的代碼,error.code 行給了我一個錯誤。 不過,它確實與 error._code 一起工作。 換句話說,對保羅的原始答案略有修改。 這是我的最終代碼(不過我會針對所有錯誤對其進行編輯):
if let errCode = AuthErrorCode(rawValue: error!._code) {
switch errCode {
case .errorCodeInvalidEmail:
print("invalid email")
case .errorCodeEmailAlreadyInUse:
print("in use")
default:
print("Create User Error: \(error)")
}
}
為 Swift 4 + Firebase 4 + UIAlertController 更新
extension AuthErrorCode {
var errorMessage: String {
switch self {
case .emailAlreadyInUse:
return "The email is already in use with another account"
case .userNotFound:
return "Account not found for the specified user. Please check and try again"
case .userDisabled:
return "Your account has been disabled. Please contact support."
case .invalidEmail, .invalidSender, .invalidRecipientEmail:
return "Please enter a valid email"
case .networkError:
return "Network error. Please try again."
case .weakPassword:
return "Your password is too weak. The password must be 6 characters long or more."
case .wrongPassword:
return "Your password is incorrect. Please try again or use 'Forgot password' to reset your password"
default:
return "Unknown error occurred"
}
}
}
extension UIViewController{
func handleError(_ error: Error) {
if let errorCode = AuthErrorCode(rawValue: error._code) {
print(errorCode.errorMessage)
let alert = UIAlertController(title: "Error", message: errorCode.errorMessage, preferredStyle: .alert)
let okAction = UIAlertAction(title: "Ok", style: .default, handler: nil)
alert.addAction(okAction)
self.present(alert, animated: true, completion: nil)
}
}
}
用法示例:
Auth.auth().signIn(withEmail: email, password: password, completion: { (user, error) in
if error != nil {
print(error!._code)
self.handleError(error!) // use the handleError method
return
}
//successfully logged in the user
})
盡管這已得到正確回答,但還是想分享一個很好的實現,為此我們添加到我們的項目中。
這也可以用於其他錯誤類型,但我們只需要它用於FIRAuthErrorCodes 。
如果您將 FIRAuthErrorCode 擴展為具有字符串類型的變量 errorMessage,則您可以為用戶提供自己的錯誤消息:
extension FIRAuthErrorCode {
var errorMessage: String {
switch self {
case .errorCodeEmailAlreadyInUse:
return "The email is already in use with another account"
case .errorCodeUserDisabled:
return "Your account has been disabled. Please contact support."
case .errorCodeInvalidEmail, .errorCodeInvalidSender, .errorCodeInvalidRecipientEmail:
return "Please enter a valid email"
case .errorCodeNetworkError:
return "Network error. Please try again."
case .errorCodeWeakPassword:
return "Your password is too weak"
default:
return "Unknown error occurred"
}
}
}
您可以只自定義我們上面的一些內容,並將其余內容分組在“未知錯誤”下。
使用此擴展程序,您可以處理 Vladimir Romanov 的回答中所示的錯誤:
func handleError(_ error: Error) {
if let errorCode = FIRAuthErrorCode(rawValue: error._code) {
// now you can use the .errorMessage var to get your custom error message
print(errorCode.errorMessage)
}
}
FIRAuthErrorCode 是一個 int 枚舉而不是一個字符串枚舉。 執行以下操作:
if let error = error {
switch FIRAuthErrorCode(rawValue: error.code) !{
case .ErrorCodeInvalidEmail:
此答案中的更多信息。
我正在使用 Swift 5 和 Firebase 6.4.0,對我來說,以上都沒有真正奏效。 在嘗試了一下之后,我想出了這個:
Auth.auth().createUser(withEmail: emailTextfield.text!, password: passwordTextfield.text!) { (user, error) in
if error!= nil{
let alert = UIAlertController(title: "Error", message: error!.localizedDescription, preferredStyle: .alert)
let okAction = UIAlertAction(title: "Ok", style: .default, handler: nil)
alert.addAction(okAction)
self.present(alert,animated: true)
}
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