因此，我正在为一个移动应用程序编写注册表，当用户填写注册表并提交时，进度条会出现并无限旋转，令人惊讶的是，没有打印任何消息。尽管如此，用户还是出现在firebase控制台上，这让我难以置信。
代码：

progressBar.setVisibility(View.VISIBLE);
            mAuth.createUserWithEmailAndPassword(email, password)
                    .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                        @Override
                        public void onComplete(@NonNull Task<AuthResult> task) {
                            if(task.isSuccessful()) {
                                User user = new User(fullName, rating, email);

                                System.out.println(user.fullName);

                                FirebaseDatabase.getInstance().getReference("Users")
                                        .child(FirebaseAuth.getInstance().getCurrentUser().getUid())
                                        .setValue(user).addOnCompleteListener(new OnCompleteListener<Void>() {
                                    @Override
                                    public void onComplete(@NonNull Task<Void> task) {
                                        if(task.isSuccessful()) {
                                            Toast.makeText(RegisterUser.this, "User has been registered succesfully!", Toast.LENGTH_LONG).show();
System.out.println("Success!");
                                            progressBar.setVisibility(View.GONE);
                                        }else {
                                            Toast.makeText(RegisterUser.this, "Failed to register! 
 Try again!", Toast.LENGTH_LONG).show();
System.out.println("Failure!");
                                            progressBar.setVisibility(View.GONE);
                                        }
                                    }
                                });
                            }
                        }
                    });

谢谢