增加交互逻辑

app.js

@@ -9,6 +9,7 @@ App({
     RELEASE_URL: "https://cashier.miyahub.com/",
     BASE_URL: null,
     appId: "2021001107603212",
+    backScreenAppId:"2021001107617164",
     //小程序容器版本
     containerVersionCode: null,
     localAccountInfo: null,
@@ -30,17 +31,17 @@ App({
       }
     });
     //添加后屏小程序
-    // my.ix.addExtensionApp({
-    //   appId: "2021001107617164",
-    //   // 填入后屏小程序的 AppID
-    //   type: "screen",
-    //   success: (res) => {
-    //     console.log("addExtensionApp success:", res)
-    //   },
-    //   fail: (res) => {
-    //     console.log("addExtensionApp fail:", res)
-    //   },
-    // })
+    my.ix.addExtensionApp({
+      appId: this.globalData.backScreenAppId,
+      // 填入后屏小程序的 AppID
+      type: "screen",
+      success: (res) => {
+        console.log("addExtensionApp success:", res)
+      },
+      fail: (res) => {
+        console.log("addExtensionApp fail:", res)
+      },
+    })
   },
   onShow(options) {
     // 从后台被 scheme 重新打开

const/actioncmd.js

@@ -3,3 +3,9 @@ export const ACTION_PRINT_RESULT = "ACTION_PRINT_RESULT";
 
 //发送重打印指令
 export const ACTION_REPRINT = "ACTION_REPRINT";
+
+//商品信息
+export const ACTION_GOODS = "ACTION_GOODS";
+
+//去结算页面
+export const ACTION_GOODS = "ACTION_GO_BALANCE";

pages/home/home.js

@@ -18,9 +18,7 @@ Page({
   },
 
   homeTap() {
-
-    //FIXME 这里是跳转到新的界面
-    my.navigateTo({
+    my.redirectTo({
         url: "/pages/scan/scan"
       });
   },

pages/scan/scan.axml

@@ -33,11 +33,6 @@
          <view class="scan-price-quantity-propmt">
 			   （共{{totalQuantity}}件） 
         </view>
-
-       <button style="margin-left:120rpx;padding-left:20rpx;padding-right:20rpx;" size="default" type="primary" onTap="goBalance">
-          去支付
-       </button>
-
   </view>
   <!-- <view class="scan-bottom-item">
 				 <view class="scan-price-total-propmt">

pages/scan/scan.js

@@ -2,6 +2,7 @@ var api = require("../../utils/api.js");
 import { Page } from '../../utils/scan';
 import {API_SCAN} from '../../const/apiurl'
 import {API_USE_COUPON} from '../../const/apiurl'
+import { ACTION_GOODS } from '../../const/actioncmd'
 
 
 Page({
@@ -23,6 +24,42 @@ Page({
     }
   },
 
+   onShow() {
+    //开启后屏监听
+    let context = this;
+    my.ix.onBuddyMessage({
+      success: (res) => {
+        console.info(`onBuddyMessage success: ${JSON.stringify(res)}`);
+        if (res.action == ACTION_GOODS) {
+           //商品信息同步
+           let viewGoodsInfo = res.data.viewGoodsInfo
+           if(viewGoodsInfo.goods == null ||  viewGoodsInfo.goods.length == 0){
+             my.redirectTo({
+               url: "/pages/home/home"
+             });
+           }else{
+             //空列表就回到首页
+             context.setData({
+               goods: viewGoodsInfo.goods,
+               totalPrice: viewGoodsInfo.totalPrice,
+               totalQuantity: viewGoodsInfo.totalQuantity,
+               totalDisc: viewGoodsInfo.totalDisc,
+             })
+           }
+         
+        }else if(res.action == ACTION_GO_BALANCE){
+           //去结算页面
+           context.goBalance();
+        } 
+      }
+    });
+  },
+
+  onHide() {
+    //关闭后屏监听
+    my.ix.offBuddyMessage();
+  },
+
   //外接扫码枪事件
   onKeyPress(r) {
     console.log("scan onKeyPress==>" + r);
@@ -134,6 +171,25 @@ Page({
      totalPrice: totalPriceTemp,
      })
 
+     //同步信息到后端
+     this.sendGoodInfoToBack();
+  },
+
+  //把所有的商品数据发送到后屏
+  sendGoodInfoToBack() {
+    let context = this;
+    my.ix.sendBuddyMessage({
+      target: getApp().globalData.backScreenAppId,
+      data: context.data,
+      success: (res) => {
+        console.log("发送商品数据到后屏小程序成功 ===》"+JSON.stringify(res));
+      },
+      fail: (res) => {
+        console.log("发送商品数据到后屏小程序 失败 ===》 "+JSON.stringify(res));
+        //发送失败重试
+        context.sendGoodInfoToBack();
+      }
+    })
   },
 
   //跳转结算页面