public void onCreate(Bundle savedInstanceState) {
key = getKey();//catch secret key value
try {
//Log.v("Login onClick", "Login onClick try");


                String encrypted_username = AESHelper.encrypt(key, my_username);
                String encrypted_password = AESHelper.encrypt(key, my_password);

                savePreferences("storedName", encrypted_username);
                savePreferences("storedPass", encrypted_password);



            } catch (Exception e) {

                // Log.v("Login onClick", "Login onClick catch");
                e.printStackTrace();
            }
}