所以當我嘗試將我的部署目標設置爲iOS 9(真的是低於10.0)時,我收到了標題中指出的錯誤。Swift 3 - 「NSPersistentContainer僅適用於ios 10和更新版本」
問題存在的位置:
// MARK: - Core Data stack
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: "Keebin_development_1")
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)")
}
})
return container
}()
看着不同的做題/答案很明顯,我需要添加一些代碼之間的iOS 10是否可用與否來區分。 Swift 3本身建議使用@available(iOS 10.0, *)
。雖然這還不夠。我希望這很好,因爲我錯過了「如果不能使用這個」,但是對於Swift和iOS編程來說是新的,我不確定要寫什麼。我似乎無法找到任何答案,提供關於寫什麼的確切答案。有人可以幫忙嗎?
這是一個第三方庫,雖然對不對?我希望有一種方法可以通過沒有第三方庫的代碼來解決它。 –