FirebaseAuth未创建用户

FirebaseApp.initializeApp(this);

FirebaseAuth mAuth = FirebaseAuth.getInstance();

mAuth.createUserWithEmailAndPassword(email, password)
    .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            if (task.isSuccessful()) {
                // 用户创建成功
                FirebaseUser user = mAuth.getCurrentUser();
            } else {
                // 如果出现错误，显示错误信息
                if (task.getException() instanceof FirebaseAuthWeakPasswordException) {
                    // 弱密码
                } else if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
                    // 无效的凭证
                } else if (task.getException() instanceof FirebaseAuthUserCollisionException) {
                    // 用户已存在
                } else {
                    // 其他错误
                }
            }
        }
    });