fix: weixin pay fail func showToast error

pages/buy/buy.js

@@ -22,12 +22,6 @@ Page({
     appuserheadimg: '',
     from: '' // 从哪个页面进入的页面
   },
-
-  onShow () {
-    this.getGoodsList()
-    this.getAccountNmberFn()
-  },
-
   /**
    * 生命周期函数--监听页面显示
    */
@@ -39,8 +33,12 @@ Page({
       appusername: userName.length > 8 ? userName.substring(0,4) : userName,
       appuserheadimg: headImg
     })
+    this.initPage()
+  },
+  initPage () {
+    this.getGoodsList()
+    this.getAccountNmberFn()
   },
-
   // 获取套餐次数
   getAccountNmberFn () {
     var that = this