如何将匿名帐户转换为永久帐户

Question

有人可以帮助我如何将匿名帐户（signInAnonymouslyAndRetrieveData）转换为永久帐户吗？ 我已经尝试过了：

firebase.auth().currentUser.linkAndRetrieveDataWithCredential(credential).then(function(usercred) {
  var user = usercred.user;
  console.log("Anonymous account successfully upgraded", user);
}, function(error) {
  console.log("Error upgrading anonymous account", error);
});

但是我得到

  

无法读取null的属性“ linkAndRetrieveDataWithCredential”

错误。

Answer 1

如果没有当前登录的用户，

firebase.auth().currentUser将为空。

请确保您的匿名用户仍处于登录状态，然后如上例所示，然后可以使用linkAndRetrieveDataWithCredential

升级用户

const credential = firebase.auth.EmailAuthProvider.credential(email, password);
const currentUser = firebase.auth().currentUser;

if (currentUser) {
  currentUser.linkAndRetrieveDataWithCredential(credential).then((userCredential) => {
    const user = userCredential.user;
    console.log("Account linking success", user);
  }, (error) => {
    console.log("Account linking error", error);
  });
}

参考文献：

• Firebase帐户链接的官方指南：
  • https://firebase.google.com/docs/auth/web/account-linking
• React Native Firebase参考文档：
  • https://rnfirebase.io/docs/v4.3.x/auth/reference/User#linkAndRetrieveDataWithCredential