private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
try {
GoogleSignInAccount account = completedTask.getResult(ApiException.class); //exception is here
// Signed in successfully, show authenticated UI.
System.out.println("google token ---> " + account.getIdToken());
} catch (ApiException e) {
// The ApiException status code indicates the detailed failure reason.
// Please refer to the GoogleSignInStatusCodes class reference for more information about this error.
e.printStackTrace();
}
}