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iosskmaps

Resume download after app has been quit

I was wondering whether it was possible to resume a download after the app has been terminated by the user or the OS.

I can see that SKTDownloadManager has methods to pause and resume a download. However, these methods only work for current SKTDownloadObjectHelpers. If I pull them out of SKTDownloadManager.storedDownloadObjects() after the app has been quit and then started again and throw them at SKTDownloadManager.sharedInstance().resumeDownloadForDownloadHelper() the manager won't resume the downloads.

I dug a little deeper into the code and that these downloads are not getting restarted is because of a lack of a proper status. SKTGroupedDownloadOperation.m:87:

if (self.currentRunningGroupedOperation.stateDownloadItem >= SKTMapDownloadItemStatusDownloading) {
     return NO; //cannot start download,isntall, finsihed
}

So, my questions is whether it is even possible to resume downloads after the app has been terminated and if so how do I do it. Any help is appreciated :)

Solution

  • For resuming the download, you should trigger an event in the application:didFinishLaunching or after the application restarted:

    [[SKDownloadManager sharedInstance] tryRestartDownloadsWithDelegate:self andDataSource:self];