// 显示获取到
 private void displayCustomerInfo() {
   mBalanceAmt.setText("¥" + Utils.num2String(mCustomerInfo.getBalance()) + "元");
   mCouponNums.setText(mCustomerInfo.getCoupons().size() + "张");
 }
  /** 预下单 */
  private void preCreateOrder(final int amt) {

    goods = new ArrayList<Good>();
    Good good1 = new Good("大象", 1, amt, "专业的套套");
    Good good2 = new Good("辛太急", 2, 0, "");
    goods.add(good1);
    goods.add(good2);

    extraInfo = new ArrayList<ExtraInfo>();
    ExtraInfo mobile = new ExtraInfo("电话", "186********");
    ExtraInfo address = new ExtraInfo("地址", "望京SOHO 塔3 A17层");
    extraInfo.add(address);
    extraInfo.add(mobile);

    int totalAmount = 0;
    for (Good good : goods) {
      totalAmount += good.good_amount * good.good_count;
    }
    mTotalAmt = totalAmount + "";

    if (!Utils.isCanConnectionNetWork(MainActivity.this)) {
      Toast.makeText(MainActivity.this, "网络连接异常!", Toast.LENGTH_SHORT).show();
      return;
    }

    if (null != dialog) {
      dialog.show();
    }

    StringRequest req =
        new StringRequest(
            Method.POST,
            App.getDomain() + "/ordertoken",
            new Listener<String>() {

              @Override
              public void onResponse(String arg0) {
                try {
                  if (dialog.isShowing()) {
                    dialog.dismiss();
                  }

                  T.d("return => " + arg0);

                  JSONObject tokenJson = new JSONObject(arg0);
                  ConstValue.orderToken = tokenJson.getString("token");

                  mqt.setOutOrderToken(ConstValue.orderToken);
                  // 跳转到下单页面
                  jumpToCashier(mTotalAmt);

                } catch (Exception e) {
                  if (dialog.isShowing()) {
                    dialog.dismiss();
                  }
                  T.d(e.toString());
                }
              }
            },
            new ErrorListener() {

              @Override
              public void onErrorResponse(VolleyError arg0) {
                if (dialog.isShowing()) {
                  dialog.dismiss();
                }
                Toaster.show(MainActivity.this, "请求失败!");
                T.d(arg0.toString());
              }
            }) {

          @Override
          protected Map<String, String> getParams() throws AuthFailureError {

            Map<String, String> params = new HashMap<String, String>();
            params.put("total_amt", mTotalAmt);
            params.put("out_mchnt", App.getOutMerchant());
            return params;
          }
        };
    mQueue.add(req);
  }