Background downloading even if the phone gets locked

Question

I am trying to implement an application for iPhone that should simply download some content out of the web. This download is quite big, so I implemented the download as a backgr

Answer 1

You need to surround the downloading code with background task block like this:

UIApplication* app = [UIApplication sharedApplication];
        UIBackgroundTaskIdentifier bgTask = [app beginBackgroundTaskWithExpirationHandler:^{
            //here you need to finish what you are doing evven if you've not finished yet, otherwise your app will be killed
            [app endBackgroundTask:bgTask];
        }];

        //here comes your downloading code

        [app endBackgroundTask:bgTask];

This will give you 10 minutes(according to some other posts) to execute code in background...