iOS 9、10 CoreData:无法在路径上加载优化模型 [英] iOS 9, 10 CoreData: Failed to load optimized model at path
问题描述
我创建了CoreData模型的新版本,并将现有版本迁移到该版本。应用程序在iOS 9+上运行时没有任何问题,但是对于iOS 9和10,我遇到此错误:
I have created new version of CoreData model and migrated existing one to it. Application works without any issues on iOS 9+, but for iOS 9 and 10 I am getting this error:
2017-10-22 19 :28:37.081 CafeManager [16654:1918728] CoreData:无法在路径
'/ Users / dj-glock / Library / Developer / CoreSimulator / Devices / A81AA9C4-7B59-4422-BA0A加载
负载优化模型-0FD0D1A05205 / data / Containers / Bundle / Application / DD66571C-4EB6-4A8B-A99B-B447DD0FFFBA / CafeManager.app / CafeManager.momd / CafeManager
v2.omo'
2017-10-22 19:28:37.081 CafeManager[16654:1918728] CoreData: Failed to load optimized model at path '/Users/dj-glock/Library/Developer/CoreSimulator/Devices/A81AA9C4-7B59-4422-BA0A-0FD0D1A05205/data/Containers/Bundle/Application/DD66571C-4EB6-4A8B-A99B-B447DD0FFFBA/CafeManager.app/CafeManager.momd/CafeManager v2.omo'
iOS 10:
CoreData:注释:无法在路径$ b $上加载优化模型b'/用户/ dj-glock /库/开发人员/CoreSimulator/Devices/3708F142-3BD0-4C70-8515-217B7785D285/data/Containers/Bundle/Application/3842402F-BEAE-47CB-8C27-EC6CA7D76B03/CafeManager.app/CafeManager .momd / CafeManager
v2.omo'
CoreData: annotation: Failed to load optimized model at path '/Users/dj-glock/Library/Developer/CoreSimulator/Devices/3708F142-3BD0-4C70-8515-217B7785D285/data/Containers/Bundle/Application/3842402F-BEAE-47CB-8C27-EC6CA7D76B03/CafeManager.app/CafeManager.momd/CafeManager v2.omo'
我检查了很多类似的问题,但没有找到解决方案我。我试图在模拟器上重新安装应用程序,以重新启动等等。有人可以建议吗?
I have checked a lot of similar questions, but did not find solution for me. I have tried to re-install app on simulator, to re-launch and so on. Can anybody advise?
文件夹包含以下文件:
iOS 9的AppDelegate CoreData堆栈:
AppDelegate CoreData stack for iOS 9:
// MARK: - Core Data stack for iOS 8+
static var managedObjectContext: NSManagedObjectContext = {
var applicationDocumentsDirectory: URL = {
let urls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return urls[urls.count-1]
}()
var managedObjectModel: NSManagedObjectModel = {
let modelURL = Bundle.main.url(forResource: "CafeManager", withExtension: "momd")!
return NSManagedObjectModel(contentsOf: modelURL)!
}()
var persistentStoreCoordinator: NSPersistentStoreCoordinator = {
let a = managedObjectModel.entities
let coordinator = NSPersistentStoreCoordinator(managedObjectModel: managedObjectModel)
let url = applicationDocumentsDirectory.appendingPathComponent("SingleViewCoreData.sqlite")
print(url)
do
{
let options = [NSMigratePersistentStoresAutomaticallyOption: true, NSInferMappingModelAutomaticallyOption: true]
try coordinator.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: url, options: options)
} catch {
NSLog("Error initializing smStore for iOS 8+ - \(error.localizedDescription)")
}
return coordinator
}()
let coordinator = persistentStoreCoordinator
var managedObjectContext = NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
managedObjectContext.persistentStoreCoordinator = coordinator
return managedObjectContext
}()
推荐答案
对于< iOS11。只需使用未优化的 .mom 模型版本( CafeManager v2.mom
)。
It seems to be the problem with optimized model versions on < iOS 11. Just use unoptimized .mom model version instead (CafeManager v2.mom
).
这是我修复的方式:
public func managedObjectModel() -> NSManagedObjectModel {
let omoURL = modelBundle.url(forResource: name, withExtension: "omo", subdirectory: modelDirectoryName)
let momURL = modelBundle.url(forResource: name, withExtension: "mom", subdirectory: modelDirectoryName)
guard var url = omoURL ?? momURL else { fatalError("model version \(self) not found") }
// Use unoptimized model version < iOS 11
if #available(iOS 11, *) {} else { if let momURL = momURL { url = momURL} }
guard let model = NSManagedObjectModel(contentsOf: url) else { fatalError("cannot open model at \(url)") }
return model
}
如果您在想,我要我的速度,为什么我要使用未优化的内容,请阅读此答案。
If you're thinking, I want my speed, why would I use something unoptimized, read this answer.
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