CODEWITHSUNDEEP
iphoneobjective-cios4backgroundmultitasking
Jonathan.
Jonathan.

Reputation: 55594

Apple Push Notifications

I'm building an app that checks as site every 15 minutes for changes. I can do this fine in the app, when it's open. But how do I go about doing this while the app is in the background?

The trouble is I don't think I can use the Push Notification Service. The page on the site which is being checked, requires the user to be logged into the site. Because there is a cookie jar for each app, the user logs into the site through a UIWebView at the beginning and then once logged in, the site is polled every 15 minutes using NSURLConnection and receives the data for the logged in user because of the cookies created at login in the webview. I don't believe there is a way to do this on a server for many different users? And if there was wouldn't the user's site username and password have to be stored on my push server which is a huge no.

So can I use task completion, or is it possible to access a page that only appears correct when the correct cookies are present from a server and then use push notification.

Upvotes: 0

Views: 286

Answers (1)

tomislav
tomislav

Reputation: 339

Unfortunately there is no way to get the cookie from a UIWebview. And task background completion can only run for 10 minutes.

I'm not sure what kind of website you are trying to access, but if you can replicate the login using a NSURLConnection you can retrieve the cookie using NSHTTPCookie. Then store the cookie data on your server and then access the web site from the server with the "Set-Cookie" header to check the content for changes.

This, of course, depends on how long the cookie lasts (expires).

Upvotes: 1

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