我如何使用电子邮件身份验证的详细信息登录Firebase

Question

How can i use the details of the firebase email authentication sign in instead of me using the email and password i added myself..

   private void loginToFirebase() {
    String email = getString(R.string.firebase_email);
    String password = getString(R.string.firebase_password);
    // Authenticate with Firebase and subscribe to updates
    FirebaseAuth.getInstance().signInWithEmailAndPassword(
            email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(Task<AuthResult> task) {
            if (task.isSuccessful()) {
                subscribeToUpdates();
                Log.d(TAG, "firebase auth success");
            } else {
                Log.d(TAG, "firebase auth failed");
            }
        }
    });
} 

Answer 1

Like the Firebase documentation said :

FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
// User is signed in
} else {
// No user is signed in
}

Here is the Firebase documentation