How to logout google authentication?

Question

I have integrated Google authenticate login in my app but after once login if I log out my account still every time app automatically sign in the old user account.

Main

Answer 1

You also need to sign out from GoogleSignInClient and FirebaseAuth current user, something like this:

 //sign out of the user and start login activity.
public void signOut() {
    signOutBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                    .requestEmail()
                    .build();
           GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(getContext(), gso);
           mGoogleSignInClient.signOut();
           FirebaseAuth.getInstance().signOut();
           startActivity(new Intent(getContext(), LoginActivity.class));
        }
    });
}