当我们处理包含委托(delegate)的 UIKit 项目时,我们只需要添加此代码
do {
// Define Options
let options: [AnyHashable: Any] = [
NSPersistentStoreFileProtectionKey: FileProtectionType.complete
]
// Add Persistent Store
try persistentStoreCoordinator.addPersistentStore(ofType: NSSQLiteStoreType,
configurationName: nil,
at: persistentStoreURL,
options: options)
} catch {
// Error Handling
...
}
为 Core Data 启用加密。
但是如何做到这一点,当你有一个 SwiftUI 应用程序时,WITHOUT A DELEGATE 只包含一个名为 Persistense.swift
的文件,其中包含:
import CoreData
struct PersistenceController {
static let shared = PersistenceController()
static var preview: PersistenceController = {
let result = PersistenceController(inMemory: true)
let viewContext = result.container.viewContext
return result
}()
let container: NSPersistentContainer
init(inMemory: Bool = false) {
container = NSPersistentContainer(name: "TharmaTrack")
if inMemory {
container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
}
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
}
}
????
最佳答案
NSPersistentContainer
有一个 persistentStoreDescriptions
数组,您可以在调用 container.loadPersistentStores
之前修改它。事实上,如果 inMemory
为真,您已经这样做来更改商店的 URL。
所以要设置文件保护选项:
container = NSPersistentContainer(name: "TharmaTrack")
container.persistentStoreDescriptions.first!.setOption(FileProtectionType.complete as NSObject,
forKey: NSPersistentStoreFileProtectionKey)
https://stackoverflow.com/questions/65524215/