使用Phone Auth注册时如何注销/注销Firebase用户 [英] How to deregister / unregister Firebase user when registered using Phone Auth

问题描述

我已经使用Firebase便利FUIPhoneAuth注册了用户.当我尝试使用以下方法删除用户时:

I have registered users using Firebase convenience FUIPhoneAuth. When I try to delete the user with:

[user deleteWithCompletion:^(NSError * _Nullable error) ..

我收到一条错误消息，指出只能删除最近通过身份验证的用户.

"This operation is sensitive and requires recent authentication. Log in again before retrying this request."    

---

为了注销用户，我首先需要重新认证需要FIRAuthCredential"credential"参数的用户:

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In order to deregister the user, I first need to re-authenticate the user which requires a FIRAuthCredential "credential" parameter:

[user reauthenticateWithCredential:credential completion:^(NSError *_Nullable error) {

Firebase文档提到在调用委托时应该保存FIRAuthCredential.(将其存储在NSUserDefaults中)

Firebase doc mentions that one should save FIRAuthCredential when a delegate gets called.(store it in NSUserDefaults)

[[FIRPhoneAuthProvider provider] verifyPhoneNumber:userInput
                                    UIDelegate:nil
                                    completion:^(NSString * _Nullable verificationID, NSError * _Nullable error) {

我已将FUIPhoneAuth与signInWithPresentingViewController:一起使用，并且在注册时未收到FIRAuthCredential. 我在想，如果我可以掌握"FIRAuthCredential"，则可以重新使用它 注销用户.但是，当使用 FUIPhoneAuth 时，这似乎是不可能的. *如何注销 FIRAuthCredential 以便注销用户?*

I have used FUIPhoneAuth with signInWithPresentingViewController: and did not receive a FIRAuthCredential upon registration. I am thinking that if I can get hold of the "FIRAuthCredential" I can re-use it to deregister the user. But when using the FUIPhoneAuth this does not seem possible. *How do I get hold of the FIRAuthCredential in order to deregister a user?*

1. 可以重复使用"FIRAuthCredential "，还是需要先通过SMS进行完整的重新认证，然后用户才能 删除了吗?

1. Can one reuse the "FIRAuthCredential or does one need to do a complete re-authentication with a SMS before the user can be deleted?

使用 FUIPhoneAuth 注册后，如何注销用户?

How does one deregister a user when registered using FUIPhoneAuth?

推荐答案

按照常规重新进行身份验证，然后调用deleteWithCompletion. 由于您已经有了单元号，因此无需重新捕获.

Re-Authenticate as per normal and then call deleteWithCompletion. Since you already have the cell number, you do not need to recapture that.

FIRAuth *auth = [(AppDelegate*)[UIApplication sharedApplication].delegate auth];
FIRPhoneAuthProvider *provider = [FIRPhoneAuthProvider providerWithAuth:auth];

[provider verifyPhoneNumber:user.phoneNumber
                 UIDelegate:nil
                 completion:^(NSString * _Nullable verificationID, NSError * _Nullable error) {
                        if (error) {
                            return;
                        }

                        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Verification"
                                                                                       message:@"Enter the SMS verfication code" preferredStyle:UIAlertControllerStyleAlert];

                        [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
                            textField.placeholder = @"SMS Code";
                            textField.clearButtonMode = UITextFieldViewModeWhileEditing;
                            textField.borderStyle = UITextBorderStyleRoundedRect;
                        }];

                        UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"OK"
                                                                                style:UIAlertActionStyleDefault
                                                                              handler:^(UIAlertAction * action) {

                                                                                  NSArray *textfields = alert.textFields;
                                                                                  UITextField *codeField = textfields[0];

                                                                                  FIRAuthCredential *credential = [provider credentialWithVerificationID:verificationID verificationCode:codeField.text];

                                                                                  [user reauthenticateWithCredential:credential completion:^(NSError * _Nullable error) {
                                                                                      // unregister
                                                                                      [user deleteWithCompletion:^(NSError * _Nullable error) {
                                                                                          if (error) {
                                                                                              NSLog(@"FIR: User delete failed: %@",error.localizedDescription);

                                                                                          }
                                                                                          NSLog(@"FIR: User Deleted success");
                                                                                      }];
                                                                                  }];
                                                                              }];

                        UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler: ^(UIAlertAction * action) {
                        }];

                        [alert addAction:defaultAction];
                        [alert addAction:cancelAction];
                        [self presentViewController:alert animated:YES completion:nil];

                    }];

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