如何在反应中检查用户是否使用密码方法登录？

Question

I want to add password change functionality which is only visible to users logged with email/password. I am also getting my user from the onAuthChanged method called in useEffect which runs on the app initialize.

I implemented code based on this question

here is what I've tried:-

useEffect(() => {
    firebaseAuth().onAuthStateChanged((user) => {
      if(user){
        for (UserInfo userinf: FirebaseAuth.getInstance().getCurrentUser().getProviderData()) {
          if (userinf.getProviderId().equals("password")) {
              System.out.println("User is signed in with email/password");
          }
      }
},[]);

But there is no Object named FirebaseAuth in 'firebase' library.

Answer 1

You're trying to add Java code to your JavaScript project, which won't work.

You'll have to convert the Java code you found to JavaScript, which shouldn't be too hard if you keep the reference documentation for both handy: JavaScript , Java .

I actually just noticed that the Firebase documentation also have guides on how to do this for Java and JavaScript . The latter contains this handy code snippet:

var user = firebase.auth().currentUser;

if (user != null) {
  user.providerData.forEach(function (profile) {
    console.log("Sign-in provider: " + profile.providerId);
    console.log("  Provider-specific UID: " + profile.uid);
    console.log("  Name: " + profile.displayName);
    console.log("  Email: " + profile.email);
    console.log("  Photo URL: " + profile.photoURL);
  });
}