Office 365 App using NAPA - "The system cannot find the file specified. (Exception from HRESULT: 0x80070002)"

Question

Hello,
I am creating an app using NAPA tool in Office 365. I am trying to "Add an attachment" to a custom list item using SPServices. When I am using my code  (jquery code) in content editor web part on a page, its working fine, but when I am adding
the same code in an app, its giving me error :  "The system cannot find the file specified. (Exception from HRESULT:
0x80070002)" - 500 Internal Server error.
(function () {
// This code runs when the DOM is ready and creates a context object which is
// needed to use the SharePoint object model
$(document).ready(function () {
//alert('In doc ready');
$('.attachmentButton').change(function(event){
var listName = 'UploadTest',
itemId = 2;
handleFileChange(listName,itemId,event.target.files);
function handleFileChange(listName,itemId,files){
alert('In handleFileChange :=' + listName + "" + itemId + "" + files[0]);
alert('files.length :=' + files.length);
var filereader = {},
file = {},
i=0;
//loop over each file selected
for(i = 0; i < files.length; i++) {
alert('In for loop');
file = files[i];
filereader = new FileReader();
filereader.filename = file.name;
alert('filereader.filename :=' + filereader.filename);
filereader.onload = function() {
var data = this.result;
var n=data.indexOf(";base64,") + 8;
//alert('n :=' + n);
//removing the first part of the dataurl give us the base64 bytes we need to feed to sharepoint
data= data.substring(n);
//alert('data :=' + data);
alert('Above SPServices this.filename :=' + this.filename);
$().SPServices({
operation: "AddAttachment",
listName: listName,
asynch: false,
listItemID:itemId,
fileName: this.filename,
attachment: data,
completefunc: function (xData, Status) {
console.log('attachment upload complete',xData,status);
alert('Status :=' + Status);
if (Status.toLowerCase() == "error"){
alert(xData.responseText);
alert(xData.status);
alert(xData.statusText);
filereader.onabort = function() {
alert("The upload was aborted.");
filereader.onerror = function() {
alert("An error occured while reading the file.");
//fire the onload function giving it the dataurl
filereader.readAsDataURL(file);
alert(xData.responseText); - gives error - " "The system cannot find the file specified. (Exception from HRESULT: 0x80070002)""
alert(xData.status); - gives error - "500"
alert(xData.statusText); - gives error - "Internal server error"
Server Publishing infrastructure and Server publishing features are activated on site collection and site respectively.
Any suggestions, why I am getting this error in NAPA ?

Answer 1

Hi,
According to your post, my understanding is that you have an issue about adding attachments to list items in app.
To add attachment to list item in the host web, we should first get the list and the list items from the host web, then add the attachments to the list items.
There are two articles about retrieve the list and list items in the host web, you can refer to them.
http://www.dotnetcurry.com/showarticle.aspx?ID=1028
http://www.c-sharpcorner.com/UploadFile/93cb27/retrieve-sharepoint-app-host-web-list-items-in-sharepoint-ho/
What’s more, we can also use the REST API to achieve the same scenario.
http://www.c-sharpcorner.com/UploadFile/472cc1/add-attachments-to-list-items-in-sharepoint-2013-using-rest/
Thanks & Regards,
Jason
Jason Guo
TechNet Community Support