添加记录图片预览bug修复

pages/add_record/index.js

@@ -103,10 +103,10 @@ Page({
   },
 
   previewPic: function(e) {
-    var current = this.data.selectPic[e.target.dataset.index]
+    var current = this.data.pictureUrl[e.target.dataset.index]
     wx.previewImage({
       current: current,
-      urls: this.data.selectPic
+      urls: this.data.pictureUrl
     })
 
   },