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Recent questions tagged core

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core location - Why the CLLocationManager delegate is not getting called in iPhone SDK 4.0?

This is the code that I have in my AppDelegate Class - (BOOL)application:(UIApplication *)application ... is the reason ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - How to disable WAL journal mode

https://developer.apple.com/library/ios/releasenotes/DataManagement/WhatsNew_CoreData_iOS/ I am having trouble in disabling ... mode WAL. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - NSPredicate: Combine CONTAINS with IN

I have a set of users in CoreData and an search field in my application. User has the properties firstname ... of search terms with CONTAINS? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - Xcode 8 generates broken NSManagedObject subclasses for iOS 10

I updated my iOS app project recently to iOS 10. Now I'm trying to change the Core Data Model of my ... for type lookup in this context See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - NSFetchedResultsController with predicate ignores changes merged from different NSManagedObjectContext

I am presenting table view contents using NSFetchedResultsController which has a predicate: [NSPredicate predicateWithFormat ... Am I missing something obvious? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - How can I create instances of managed object subclasses in a NSManagedObject Swift extension?

When creating an extension helper to NSManagedObject to create a new managed object subclass, swift provides ... .substringFromIndex(range!.endIndex) } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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977 views

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core data - Swift - Is there a way to include single quotes (') in a concatenated string?

I have already searched for answers and whatever I tried unfortunately did not work. My case is as follows: I have ... there-a-way-to-include-single-quotes-in-a-concatenated-string...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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882 views

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core data - Is viewContext different between Swift and SwiftUI

EDIT: I've added a rewording of my question at the bottom. So I have an app that I've ... stackoverflow.com/questions/65866389/is-viewcontext-different-between-swift-and-swiftui...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - NSManagedObject fetched into 2 different contexts has different attribute values

My app has a reproducible CoreData error. I use the viewContext for display, and a backgroundContext for ... -fetched-into-2-different-contexts-has-different-attribute-values...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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core data - How to write a CloudKit NSPredicate for a many-to-many relationship, on CloutKit database created using NSPersistentCloudKitContainer

I want to write an NSPredicate for a CloudKit query on a database created using NSPersistentCloudKitContainer. Normally ... nspredicate-for-a-many-to-many-relationship-on-cloutkit...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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958 views

1 answer

core - Microsoft Graph - Planner API in a Service

Im trying to make a little .core service to keep gitlab issue's and a board on Microsoft Planner in ... .com/questions/65601084/microsoft-graph-planner-api-in-a-service...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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935 views

1 answer

core data - In a SwiftUI lifecycle app, where exactly should I register a CoreData transformerValue?

I'm trying to follow this tutorial: https://www.avanderlee.com/swift/valuetransformer-core-data/ But I'm ... -lifecycle-app-where-exactly-should-i-register-a-coredata-transform...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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857 views

1 answer

core data - SwiftUI connect CoreDate to settings window (macOS)

I recently added a settings pane to my app, and tried to connect it to core data to let the ... .com/questions/65647616/swiftui-connect-coredate-to-settings-window-macos...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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975 views

1 answer

core data - how to fix the error: 'property initializers run before' self 'is available' in @FetchRequest

I have the following structure and in the @FetchRequest I get an error in the predicate, var 'nomAcuariL', I ... fix-the-error-property-initializers-run-before-self-is-available-in...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

core data - Problem getting NSPersistentCloudKitContainer to sync between devices (SwiftUI, iOS)

I have set up my Core Data model with NSPersistentCloudKitContainer: struct PersistenceController { ... -getting-nspersistentcloudkitcontainer-to-sync-between-devices-swiftui...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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956 views

1 answer

core data - CoreData: why not refresh UI when book.isPublic toggled

'@Environment(.managedObjectContext) var context' will monitor the changes of context. When I click the button to ... /coredata-why-not-refresh-ui-when-book-ispublic-toggled...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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core data - CoreData: why not refresh UI if Buttons clicked

Q1: Can '@Environment(.managedObjectContext) var context' monitor the changes of context? If not, it's just a ... /questions/65651482/coredata-why-not-refresh-ui-if-buttons-clicked...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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826 views

1 answer

core data - What is coredata equivalent for android

I used to program for iPhone. But then I want to make another similar program in Android. Well, ... /stackoverflow.com/questions/11046258/what-is-coredata-equivalent-for-android...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

851 views

1 answer

core data - What is coredata equivalent for android

I used to program for iPhone. But then I want to make another similar program in Android. Well, ... /stackoverflow.com/questions/11046258/what-is-coredata-equivalent-for-android...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

850 views

1 answer

core data - How to access CoreData model in today extension (iOS)

Is it possible to work with my CoreData model in the today extension in swift like in the original app? ... questions/25407428/how-to-access-coredata-model-in-today-extension-ios...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

864 views

1 answer

core data - How to access CoreData model in today extension (iOS)

Is it possible to work with my CoreData model in the today extension in swift like in the original app? ... questions/25407428/how-to-access-coredata-model-in-today-extension-ios...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

811 views

1 answer

core data - How to access CoreData model in today extension (iOS)

Is it possible to work with my CoreData model in the today extension in swift like in the original app? ... questions/25407428/how-to-access-coredata-model-in-today-extension-ios...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

core data - Resolving 'Failed to call designated initializer on NSManagedObject class'

I'm new to Swift and I'm trying to learn how to use Core Data. But I'm getting this ... questions/33301250/resolving-failed-to-call-designated-initializer-on-nsmanagedobject-class...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

core data - Resolving 'Failed to call designated initializer on NSManagedObject class'

I'm new to Swift and I'm trying to learn how to use Core Data. But I'm getting this ... questions/33301250/resolving-failed-to-call-designated-initializer-on-nsmanagedobject-class...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

core data - What does the Indexed Property of a CoreData attribute do?

I have a Core data model with a 32bit hash value. I need to look up specific hash values quickly. Should I ... /7935348/what-does-the-indexed-property-of-a-coredata-attribute-do...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

core data - Sorting URLs with FetchRequest crashes when new content is saved

I have an app which uses Core Data with an entity called Item and has the attribute "url" to save URL ... /66056599/sorting-urls-with-fetchrequest-crashes-when-new-content-is-saved...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

897 views

1 answer

core data - Sorting URLs with FetchRequest crashes when new content is saved

I have an app which uses Core Data with an entity called Item and has the attribute "url" to save URL ... /66056599/sorting-urls-with-fetchrequest-crashes-when-new-content-is-saved...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

core - Microsoft Graph - Planner API in a Service

Im trying to make a little .core service to keep gitlab issue's and a board on Microsoft Planner in sync. ... Permissions' which planner needs. So is there another option?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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