我正在开发应用程序并共享扩展,并尝试使用核心数据。但是,当我在扩展程序中插入项目时,这些项目仅在扩展程序中可见,但在容器应用程序中不可见(例如,我从应用程序执行NSFetchRequest并获得零项,但在应用程序中我得到> 0)。我正在使用以下代码来获取持久性容器:
lazy var persistentContainer: NSPersistentContainer = {
let container = NSPersistentContainer(name: "appname")
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error {
fatalError("Unresolved error \(error)")
}
})
return container
}()
[此外,还会检查appname.xcdatamodeld的目标成员船舶的应用程序和扩展名。如何为容器应用程序和扩展程序正确共享核心数据?
lazy var persistentContainer: NSPersistentContainer = {
/*
The persistent container for the application. This implementation
creates and returns a container, having loaded the store for the
application to it. This property is optional since there are legitimate
error conditions that could cause the creation of the store to fail.
*/
let container = NSPersistentContainer(name: "xx")
let appName: String = "xx"
var persistentStoreDescriptions: NSPersistentStoreDescription
let storeUrl = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.xx.xx.container")!.appendingPathComponent("xx.sqlite")
let description = NSPersistentStoreDescription()
description.shouldInferMappingModelAutomatically = true
description.shouldMigrateStoreAutomatically = true
description.url = storeUrl
container.persistentStoreDescriptions = [NSPersistentStoreDescription(url: FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.xxx.xx.container")!.appendingPathComponent("xx.sqlite"))]
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()