How to make this on AlertDialog with SharedPreference

private void do_connect(String epki_alias) {
        String app_name = "com.project.vpn";
        String proxy_name = null;
        String server = null;
        String username = null;
        String password = null;
        String pk_password = null;
        String response = null;
        boolean is_auth_pwd_save = RETAIN_AUTH;
        String profile_name = selected_profile_name();
        if (this.proxy_group.getVisibility() == 0) {
            ProxyList proxy_list = get_proxy_list();
            if (proxy_list != null) {
                proxy_name = proxy_list.get_enabled(RETAIN_AUTH);
            }
        }
        if (this.server_group.getVisibility() == 0) {
            server = SpinUtil.get_spinner_selected_item(this.server_spin);
        }
        if (this.username_group.getVisibility() == 0) {
            username = this.username_edit.getText().toString();
            if (username.length() > 0) {
                this.prefs.set_string_by_profile(profile_name, "username", username);
            }
        }
        if (this.pk_password_group.getVisibility() == 0) {
            pk_password = this.pk_password_edit.getText().toString();
            boolean is_pk_pwd_save = this.pk_password_save_checkbox.isChecked();
            this.prefs.set_boolean_by_profile(profile_name, "pk_password_save", is_pk_pwd_save);
            if (is_pk_pwd_save) {
                this.pwds.set("pk", profile_name, pk_password);
            } else {
                this.pwds.remove("pk", profile_name);
            }
        }
        if (this.password_group.getVisibility() == 0) {
            password = this.password_edit.getText().toString();
            is_auth_pwd_save = this.password_save_checkbox.isChecked();
            this.prefs.set_boolean_by_profile(profile_name, "auth_password_save", is_auth_pwd_save);
            if (is_auth_pwd_save) {
                this.pwds.set("auth", profile_name, password);
            } else {
                this.pwds.remove("auth", profile_name);
            }
        }
        if (this.cr_group.getVisibility() == 0) {
            response = this.response_edit.getText().toString();
        }

        String vpn_proto = this.prefs.get_string("vpn_proto");
        String conn_timeout = this.prefs.get_string("conn_timeout");
        String compression_mode = this.prefs.get_string("compression_mode");
        clear_stats();
        submitConnectIntent(profile_name, server, vpn_proto, conn_timeout, username, password, is_auth_pwd_save, pk_password, response, epki_alias, compression_mode, proxy_name, null, null, true, get_gui_version(app_name));
    }