专注于对话框片段中的按钮

Question

我正在Android上使用DialogFragment创建自定义AlertDialog.Builder窗口。关于这个窗口有两种情况：

1. 仅限中性按钮
2. 使用中性和正面按钮。

在第一种情况下，中性按钮自动对焦（这就是我需要的）。在第二种情况下 - 没有任何关注任何按钮。但我还需要关注中性按钮。如何解决这个问题？

public static class OrderDialog extends DialogFragment {
 public static OrderDialog newInstance(
                int view, String orderId, String data, Boolean status) {
            OrderDialog orderInfo = new OrderDialog();
            Bundle args = new Bundle();
            args.putBoolean("status", status);
            args.putInt("view", view);
            args.putString("orderid", orderId);
            args.putString("data", data);
            orderInfo.setArguments(args);
            return orderInfo;
        }

      @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            int view = getArguments().getInt("view");
            String jsonResult = getArguments().getString("data");
            Boolean status = getArguments().getBoolean("status");
            String orderId = getArguments().getString("orderid");
            Boolean timeStampState = true;

            final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
            LayoutInflater inflater = getActivity().getLayoutInflater();
            OrderObject orderObject;
            ApiResponse apiResponse;

            setStyle(DialogFragment.STYLE_NORMAL, android.R.style.Theme_Black_NoTitleBar_Fullscreen);

            final View dialogView = inflater.inflate(view, null);

          builder.setView(dialogView)
                    .setNeutralButton(R.string.barcode_rescan,
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    ((ScannerActivity) getActivity())
                                            .retryScan();
                                }
                            });
            if (status)
                    builder.setPositiveButton(R.string.order_sucess_button,
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    ((ScannerActivity) getActivity())
                                            .checkInOrder(getOrderIdPost());
                                }
                            });

            return builder.create();
        }

以下是创建此对话框的方法：

DialogFragment getOrderResult;

if (result.first) {
    getOrderResult = OrderDialog.newInstance(
            R.layout.get_order_result_sucess,
            orderId,
            result.second,
            result.first
    );

} else {
    getOrderResult = OrderDialog.newInstance(
            R.layout.get_order_result_failure,
            orderId,
            result.second,
            result.first
    );

}

getOrderResult.show(getFragmentManager(), "order_result_dialog");