问FirebaseUI 8月离线

EN

private FirebaseAuth mFirebaseAuth;
private FirebaseAuth.AuthStateListener mAuthStateListener;
....
    mAuthStateListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();
            if (user != null) {
                // User is signed in
                onSignedInInitialize(user.getDisplayName());
            } else {
                // User is signed out
                onSignedOutCleanup();
                startActivityForResult(
                        AuthUI.getInstance()
                                .createSignInIntentBuilder()
                                .setIsSmartLockEnabled(false)
                                .setProviders(
                                        AuthUI.EMAIL_PROVIDER,
                                        AuthUI.GOOGLE_PROVIDER)
                                .build(),
                        RC_SIGN_IN);
            }
        }
    };

@Override
protected void onResume() {
    super.onResume();
    mFirebaseAuth.addAuthStateListener(mAuthStateListener);
}