topic Re: Can not get feature with attachments in ArcGIS Runtime SDK for iOS Questions

Can not get feature with attachments

SonMinh — Mon, 14 Jun 2021 03:36:21 GMT

I want to get feature with attachments, i think fetchData is function asynchronous, so it's always print "fetch data not done" first. So how can i get feature with it attachments? Thanks in advance

Re: Can not get feature with attachments

Nicholas-Furness — Mon, 14 Jun 2021 15:52:53 GMT

Hi,

You are correct. The fetchData method is async, and so you will see the "fetch data not done" message before the fetchData even makes the request. You need to hold on to each "att", which can probably be done by holding on to each "attachments" array in the same way as you are holding on to the "features" array.

Otherwise, each attachments array returned from "fetchAttachments" will go out of scope at the end of the completion block and be deallocated, and so all the "att" objects will be released before their fetchData calls can complete, and their callbacks will not be entered.

Hope that helps!

Nick

Re: Can not get feature with attachments

SonMinh — Tue, 15 Jun 2021 04:30:06 GMT

so if i want get each feature with it's attachments, which the best way i can do? Can you give me code example? Thanks in advance