本地写死广告页配置；

const/actioncmd.js

@@ -57,3 +57,9 @@ export const ACTION_PRINT_LAST_ORDER = "ACTION_PRINT_LAST_ORDER";
 
 //使用优惠券
 export const ACTION_USE_COUPON = "ACTION_USE_COUPON";
+
+//获取当前显示的广告图片
+export const ACTION_GET_CUR_AD = "ACTION_GET_CUR_AD";
+
+//发送选中的广告url给前屏
+export const ACTION_SEND_SEL_AD = "ACTION_SEND_SEL_AD";
\ No newline at end of file

pages/home/home.acss

@@ -7,13 +7,16 @@ page{
 }
 
 .bg{
-  position:absolute;
+  position:fixed;
   width:100%;
   height:100%;
   left:0rpx;
   top:0rpx;
-  background:url(/images/bg_home.png) no-repeat fixed top;
+  bottom:0rpx;
+  /* background:url(/images/bg_home.png) no-repeat fixed top; */
   background-size:100% 100%;
+  /* border: 2px solid red; */
+  box-sizing: border-box;
 }
 
 .container{

pages/home/home.axml

 <view class="page" >
-  <view class="bg" onTap="homeTap"/>
+  <view class="bg" onTap="homeTap">
+    <image mode="scaleToFill" style="width:100%;height:100%;" src="{{adUrl}}"/>
+  </view>
 
     <!-- 弹窗 -->
     <scandialog displayDialog="{{scanDialogDisplay}}"

pages/home/home.js

 var api = require("../../utils/api.js");
 import { Page } from '../../utils/scan';
+//API
 import { API_USE_COUPON } from '../../const/apiurl'
 import { API_REFUND } from '../../const/apiurl'
-import { ACTION_GO_SCAN } from '../../const/actioncmd'
-import { ACTION_GET_ACCOUNT } from '../../const/actioncmd'
-import { ACTION_DIRECT_PAYMENT } from '../../const/actioncmd'
-import { ACTION_CONVERT_COUPON } from '../../const/actioncmd'
-import { ACTION_GO_HOME } from '../../const/actioncmd'
-import { ACTION_REFUND } from '../../const/actioncmd'
-import { ACTION_REFUND_FAILED } from '../../const/actioncmd'
-import { ACTION_REFUND_SUCCESS } from '../../const/actioncmd'
-import { ACTION_PRINT_LAST_ORDER } from '../../const/actioncmd'
+//ACTION
+import {
+  ACTION_GO_SCAN, ACTION_GET_CUR_AD, ACTION_SEND_SEL_AD,
+  ACTION_GET_ACCOUNT, ACTION_DIRECT_PAYMENT, ACTION_CONVERT_COUPON,
+  ACTION_GO_HOME, ACTION_REFUND, ACTION_REFUND_FAILED,
+  ACTION_REFUND_SUCCESS, ACTION_PRINT_LAST_ORDER
+} from '../../const/actioncmd'
 
 
 Page({
@@ -24,6 +23,7 @@ Page({
     dialogResultSuccessText: "恭喜您！兑换成功",
     dialogResultFailureRemind: "兑换码未识别",
     dialogResultFailureText: "兑换失败，请稍后重试！",
+    adUrl: "/images/img_ad1.png"
   },
 
   onLoad() {
@@ -167,7 +167,35 @@ Page({
           }
           //去打印
           context.printLastOrder(printLastOrder_goodsList, printLastOrder_paySuccessResp)
+        } else if (res.action == ACTION_GET_CUR_AD) {
+          //返回当前选中广告
+          context.returnCurShowAd();
+        } else if (res.action == ACTION_SEND_SEL_AD) {
+          var selectAdUrl = res.data;
+          //改变当前的广告显示
+          context.setData({
+            adUrl: selectAdUrl
+          });
+        }
       }
+    });
+  },
+
+  /**返回当前选中广告 */
+  returnCurShowAd() {
+    let context = this;
+    my.ix.sendBuddyMessage({
+      // 填入目标小程序的 AppID
+      target: getApp().globalData.backScreenAppId,
+      data: {
+        action: ACTION_GET_CUR_AD,
+        data: context.data.adUrl
+      },
+      success: (res) => {
+        console.info(`sendBuddyMessage success: ${JSON.stringify(res)}`);
+      },
+      fail: (res) => {
+        console.info(`sendBuddyMessage failed: ${JSON.stringify(res)}`);
       }
     });
   },