background-fetch
How to troubleshoot iOS background app fetch not working?
Your problem is that you are returning from performFetchWithCompletionHandler before you call the completion handler, since the network fetch operation is occurring the in the background and you call the completion handler in your delegate method. Since iOS thinks you aren’t playing by the rules it will deny your ability to use background fetch. To … Read more
PerformFetchWithCompletionHandler called twice when simulating with Xcode
I got around this issue by declaring a static boolean in the App Delegate, and then using the boolean to get the background fetch to perform once if (!runOnce) { [submission startSubmissionProcessWithCompletetionHandler:^(UIBackgroundFetchResult result){ NSDate *fetchStart = [NSDate date]; completionHandler(result); NSDate *fetchEnd = [NSDate date]; NSTimeInterval timeElapsed = [fetchEnd timeIntervalSinceDate:fetchStart]; NSLog(@”Background Fetch Duration: %f seconds”, timeElapsed); … Read more