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Eskimo, sorry to keep obsessing about the limits of NSURLSession background downloading, but could you confirm my experimental results that NSURLSession active background download session limits apply to the total number of active download sessions used by all applications on the device?I wrote some test apps, and it looks like on an iPhone 6 running iOS 9.0b2 the limit is around 800 active background download sessions. More than that and the time taken to create an additional session starts increasing dramatically. Once there are 850 active sessions it seems to take more than 30 seconds per additional session. The slowdown happens at around 1700 active sessions on the simulator, on both iOS 8.2 and 9.0b2. So there's some difference between real devices and the simulator here.Please accept my apologies if this is just crazy talk. There seems to be a memory effect, where performance of NSURLSession depends on past runs of an app, even if the app has been uninstalled and reinstalled. I tried to account for this

Anyone else notice this issue? Before upgrading to iOS 9 beta, my mail application would store attachments (mainly audio files) in the phone forever without having to re-download them later. Now, I'm noticing that it only holds attachments for a day or so, sometimes less depending on how many restarts, then clears them off - meaning I have to download them again when going back to the e-mail. This is an issue for two reasons. 1) It absolutely destroys my data plan when I have to keep re-downloading attachments in big numbers and 2) Some applications, like Spotify, are smart enough to pull from downloaded mail attachments to play local playlists. Without stored files this functionality is broken.Thanks for any thoughts. If it makes any difference, I'm using a Gmail account.

I have an Image View horizontally and vertically centered in the container. The dimensions are 341 by 260. When run on an iPhone 6 the image is the optimal size, looks great and is proportionate to my liking for the screen size. However when run on an iPhone 4, 5, 6+ (smaller or larger screen dimensions) the image maintaines the same dimensions and is now to big or small for the screen. How do I make it scale when run on different screen sizes?

Hello,since last night, after the update came for Beta 3(?) build 13A4325c, the headset (ok, I have a cheap one from TaoTronics, but was working fine) no longer working as bluetooth Voice device. Music listening is fine.Any Ideas for a walkaround? Removing and adding finished, but no change in behavior.Update: It does connect with the intercom in the car, but no voice transfer possible. This is a big bug I guess. Thanks for your support!FrankM

Hello,I am getting really really slow response times with fetchUserRecordIDWithCompletionHandler It takes 10 seconds+ to fetch the user record id sometimes even a full minute or longer. A simple request like that can't take that long. And a few times it took only a few seconds...(this is a big problem since the user has to wait a long time, since the id is directly needed in the app)I presume it has something to do with the priority of the operation since cloudkit works asynchronously. Maybe there's someway to change this like you can do with a CKOperation by changing queuePriority.Right now I am testing with this simple code, to make sure it works still the slow response times are there. Of course my xcode project is bigger but this code gets called directly in the view did load method as the first thing.CKContainer.defaultContainer().fetchUserRecordIDWithCompletionHandler({ (userRecordId: CKRecordID!, error:NSError!) -> Void in println(userRecordId) })I have looked at other answers around slowne

after upgrade to public beta, Mail always shows there is a problem with your mailboxes and I have to Quit or Quit and rebuild”. During the rebuild process, there is a very huge (can up to several GB) log file named as $date_Library.log in /Users/username/Library/Containers/com.apple.mail/Data/Library/Logs/Mail. Then, I have to reset the Mail to factory setting follows the instruction (https://discussions.apple.com/thread/5118986)But when upgrade to PB4, the issue goes worse. The reset is not working. Finally, I have to reinstall PB and also try restore from time machine. Still, Mail crashed. Anyone comments will be appreciated.I have to say, the 10.11 PB is much much much worse than 10.10 PB. During the 10.10 PB, basically, I have no big issues.

Hello!I have a question about storing downloadable content under iOS 6.0 and higher.Where should I store content of about 300 MBytes? According to this article:https://developer.apple.com/icloud/documentation/data-storage/index.htmlit should be stored in the <Application_Home>/Library/CachesThis article:https://developer.apple.com/library/mac/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW1tells that /Caches directory may be cleared by OS in some situations, which is not desirable for us. The article advises to store downloadable content in <Application_Home>/Library/Application SupportIt's not clear enough, is this directory automatically backed up to iCloud, which is also not desirable because of big data size.So, which variant is better?