UbiquityStoreManager iOS 8 issue

[ChristianRo]

Hi,

yesterday i updated my iPad to iOS 8. From then on the sync for core data with my iOS 8 emulator doesn't work anymore. For a test I have downloaded your sample project. With that project running on my iPad and on the emulator syncing won't work either.

So my questions are:

• Why is the UbiquityStoreManager not compatible with iOS 8?
• Is it possible to keep compatibility between iOS 7 and iOS 8?
• Are there some points to concern about to provide compatibility between iOS 7 and 8? And does the upgrade from iOS 7 to iOS 8 require some specific steps to be done?

kind regards,
Christian

[mutedan]

Hi @ChristianRo, Any progress on this one?

[neilt]

It appears to me that Apple is rushing Xcode 6/iOS 8 to meet the iPhone ship schedule. I’ve had so many problems in the simulator with Xcode 6 that I am only testing on devices now. The one project that I have tried on Xcode 6 that uses UbiquityStoreManager won’t even build because it can find a valid provisioning profile, Xcode offers to fix the problem, then can’t find the fix in and endless cycle.

Neil

On Sep 14, 2014, at 10:01 AM, Dan iOSub notifications@github.com wrote:

Hi @ChristianRo, Any progress on this one?

—
Reply to this email directly or view it on GitHub.

[last-Programmer]

I am also facing the issue. Enabling the icloud works fine and it seems to be data is uploaded to icloud. but when we reinstall the application and enable the icloud the data is not being synced from icloud. This happens both in simulator and device. when i enable the icloud in second device also the data is not being downloaded. the database stays empty always when we reenable the icloud or enable it on secondary device.

I get this error message in the logs.

CoreData: iCloud: Error: failed to receive initial sync notification call back in 90 seconds

PFUbiquityFilePresenter processPendingURLs]_block_invoke(439): CoreData: Ubiquity: Librarian returned a serious error for starting downloads Error Domain=BRCloudDocsErrorDomain Code=6 "The operation couldn’t be completed. (BRCloudDocsErrorDomain error 6 - Path is outside of any CloudDocs container, will never sync)" UserInfo=0x145d8970 {NSFilePath=/var/mobile/Containers/Data/Application/C5D36B00-A9D6-4558-B02D-B783CE811DB5/Library/Application Support/CloudStore/CoreDataUbiquitySupport/mobile0A1965CD-FE2F-47A6-8BC0-39CF52EA243C/C24ECE7A-AF57-49E4-B941-85F8D8B8B805/F30AA09C-B8E5-4FD3-AE38-44D6E0A3FE28/container/mobile0A1965CD-FE2F-47A6-8BC0-39CF52EA243C/C24ECE7A-AF57-49E4-B941-85F8D8B8B805/CaHRfaDrPBVrD7nNIB3JEeeJXAeedQlihaZzvtM2VTk=/D3C6DC7D-391C-414F-ABEF-015EC007E989.1.cdt, NSDescription=Path is outside of any CloudDocs container, will never sync} with userInfo {
NSDescription = "Path is outside of any CloudDocs container, will never sync";
NSFilePath = "/var/mobile/Containers/Data/Application/C5D36B00-A9D6-4558-B02D-B783CE811DB5/Library/Application Support/CloudStore/CoreDataUbiquitySupport/mobile0A1965CD-FE2F-47A6-8BC0-39CF52EA243C/C24ECE7A-AF57-49E4-B941-85F8D8B8B805/F30AA09C-B8E5-4FD3-AE38-44D6E0A3FE28/container/mobile0A1965CD-FE2F-47A6-8BC0-39CF52EA243C/C24ECE7A-AF57-49E4-B941-85F8D8B8B805/CaHRfaDrPBVrD7nNIB3JEeeJXAeedQlihaZzvtM2VTk=/D3C6DC7D-391C-414F-ABEF-015EC007E989.1.cdt";
} for these urls: (
"file:///var/mobile/Containers/Data/Application/C5D36B00-A9D6-4558-B02D-B783CE811DB5/Library/Application%20Support/CloudStore/CoreDataUbiquitySupport/mobile0A1965CD-FE2F-47A6-8BC0-39CF52EA243C/C24ECE7A-AF57-49E4-B941-85F8D8B8B805/F30AA09C-B8E5-4FD3-AE38-44D6E0A3FE28/container/mobile0A1965CD-FE2F-47A6-8BC0-39CF52EA243C/C24ECE7A-AF57-49E4-B941-85F8D8B8B805/CaHRfaDrPBVrD7nNIB3JEeeJXAeedQlihaZzvtM2VTk=/D3C6DC7D-391C-414F-ABEF-015EC007E989.1.cdt"
)

[NorbNorb]

@lhunath : I know you will no longer maintain this project, but it would be kind if you could help us with only this one issue that came up with iOS 8 so we're all back in safe waters.

[polarneo]

@NorbNorb I am facing the same dilemma as you. Have you found any solution to this or how you may proceed?

[lhunath]

You could try omitting the NSPersistentStoreUbiquitousContentURLKey, then figure out where iCloud is storing its cdt (logs) by default, and then updating -URLForCloudContentDirectory to match. Perhaps all that's needed is to replace the "CloudStore" (USMCloudStoreDirectory) with "CloudDocs" or "CloudDocs/CloudStore".

[last-Programmer]

Thank you for the reply. I tried omitting NSPersistentStoreUbiquitousContentURLKey and log files are stored in data ▸ Library ▸ Mobile Documents ▸ [container id] ▸ CoreData ▸ B710D35F-19AD-485A-A2A5-5560F80753B1 ▸ nobody~sim4653E601-3EE9-5183-A41D-D38CF3788BD3 ▸ B710D35F-19AD-485A-A2A5-5560F80753B1

First i enabled icloud in iphone 6 simulator by omitting NSPersistentStoreUbiquitousContentURLKey and see that log files are created in the above mentioned directory.

Then i enabled icloud in iphone 6 plus simulator and found that the data i added in iphone 6 simulator is not imported.

This happens in both cases with or without NSPersistentStoreUbiquitousContentURLKey

I have also tried the default container and customer in the capabilities screen. It is the same.

I tried this simple sample https://github.com/versluis/Core-Data-iCloud and its works fine. The code here seems to be same but i am unable to identify where we have to make changes to be compatible with ios8.

[NorbNorb]

@lhunath: We're really facing huge problems due to this. Do you think you can give us a hand on this topic?

[lhunath]

The store does not sync without NSPersistentStoreUbiquitousContentURLKey? What is the error?

[last-Programmer]

I am not getting any error when i omit NSPersistentStoreUbiquitousContentURLKey. I tried upgrading the UbiquityStoreManagerExample to ios8 entitlements and facing the same issue but no errors are getting logged.It would be really very helpful to us if you could suggest a way to proceed way further on this issue.

[lhunath]

Compare the application's container on both devices and on developer.icloud.com to find out what is different. They should all be identical. Turn on verbose ubiquity logging and look through that for clues. Your destination device should show logs for downloading and importing cdt files. Consider my parseLogs to filter the noise a bit though it may be outdated a bit now.

[last-Programmer]

developer.icloud.com shows only ios7 cloud containers and it does not show the cloud drive containers which is used in ios8. I have actually upgraded to cloud drive.

[lhunath]

I don't know anything at all about cloud drive or how it affects Core Data.

[polarneo]

For me the main problem was that something was getting stuck in my delegates implementation of - (void)ubiquityStoreManager:(UbiquityStoreManager *)manager willLoadStoreIsCloud:(BOOL)isCloudStore

The console output was "Stores will change. Notifying application to reset its UI." And then it got stuck.

It got stuck at
[managedObjectContext performBlockAndWait:^{

So I tested to change it to performBlock instead of performBlockAndWait
[managedObjectContext performBlock:^{

And it worked.

Don't know the implications of this change however. Or if this is related to any of your problems.

Just wanted to let you know.