topic Re: HTML5 Offline App issues in ArcGIS JavaScript Maps SDK Questions

HTML5 Offline App issues

GrantCarroll — Tue, 03 Apr 2012 20:41:34 GMT

Hi All

I have created an HTML5 application for online and offline editng of data. It works pretty well until I have taken the final step and applied an application manifest to cache the files i need to run offline. Obvisouly one of these is the ESRI Api, however when I refresh the page after the initial load of the page i get the following error. "Could not load cross-domain resources: dojox.gfx.svg esri.nls.sjapi.... etc".

What have I missed, I'm thinking the api makes calls to Dojo to load in some resources and as a result its trying to load these but can't ?? However I am still online when I do the refresh, and the browser is pulling everything from the cache. Any advice would be most appreciated.

Thanks

Grant

Re: HTML5 Offline App issues

GrantCarroll — Tue, 03 Apr 2012 22:40:54 GMT

Solved my own problem.

I just ran it through firebug and found any files that were not loading, and added them to my manifest file. Now it works.

Re: HTML5 Offline App issues

JamesCornwell-Shiel — Mon, 09 Apr 2012 13:56:04 GMT

Out of curiosity, how are you handling data editing while offline, and syncing that data to the server when online?

Re: HTML5 Offline App issues

GrantCarroll — Mon, 09 Apr 2012 17:56:34 GMT

Hi

I have followed the example on the samples page but I had added in a manual sync button, I will eventually automate this to automatically sync when the application comes back on line. The way I do it is to load in the feature service when the users syncs, grab all the graphics that have been created while offline from local storage (see the HTML5 example on the samples page) and pass them into the feature service and then remove them from local storage. I have also implemented a version of the raster storage as well so that users can have aerials offline, however there is a limit on the local storage size to 5gb so I have been using phonegap and a SQLite plugin to store the cached map service in a database. I also have a button to manual clear the local storage and database just in case.

Any other questions happy to answer

Cheers

Re: HTML5 Offline App issues

akpagaakpaga — Fri, 25 May 2012 16:36:01 GMT

Hi grant,

I am trying to do similar application as you have done...Can You Please let me know how you are loading your map service when offline..Are you using MBTiles..
Can You please share some resources as to where I can get started...I already have used The Local Stoarage sample from HTML5 samples and Got my dynamic service layer and feature layer to show up.

I wnat them to show up when offline ..How can I do it...Thank you very much

Re: HTML5 Offline App issues

TomMacWright — Fri, 10 Aug 2012 20:08:47 GMT

There's a pretty decent blog post on using MBTiles with PhoneGap and the SQLite plugin.