“FileManager”类型的值没有成员“urlsForDirectory”-AppDelegate Swift 3 错误

Posted 2023-02-23

【中文标题】“FileManager”类型的值没有成员“urlsForDirectory”-AppDelegate Swift 3 错误

【英文标题】：Value of type 'FileManager' has no member 'urlsForDirectory' - AppDelegate Swift 3 Error

【发布时间】：2016-08-11 16:02:12

【问题描述】：

自从我最近更新到 XCode 8 Beta 5 以来，我一直在尝试解决我的 appDelegate Core Data Stack 中的这个错误。

在这些代码行中，我收到以下错误：

// MARK: - Core Data stack

lazy var applicationDocumentsDirectory: URL = 
    // The directory the application uses to store the Core Data store file. This code uses a directory named "fitness.paceapp.Pace" in the application's documents Application Support directory.
    let urls = FileManager.default.urlsForDirectory(.documentDirectory, inDomains: .userDomainMask)
    return urls[urls.count-1]
()

lazy var managedObjectModel: NSManagedObjectModel = 
    // The managed object model for the application. This property is not optional. It is a fatal error for the application not to be able to find and load its model.
    let modelURL = Bundle.main.urlForResource("Dominos", withExtension: "momd")!
    return NSManagedObjectModel(contentsOf: modelURL)!
()

关于我可能遗漏的任何想法。我很迷茫，那里没有很多答案。提前致谢。

【问题讨论】：

你看过新的FileManager API reference吗？

FileManager and urlsForDirectory Error in Swift 3 Xcode Beta 4的可能重复

【参考方案1】：

给你，

lazy var applicationDocumentsDirectory: URL = 
        // The directory the application uses to store the Core Data store file. This code uses a directory named "fitness.paceapp.Pace" in the application's documents Application Support directory.
        let urls = FileManager.default.urls(for: FileManager.SearchPathDirectory.documentDirectory, in: FileManager.SearchPathDomainMask.userDomainMask)
        return urls[urls.count-1]
    ()

    lazy var managedObjectModel: NSManagedObjectModel = 
        // The managed object model for the application. This property is not optional. It is a fatal error for the application not to be able to find and load its model.
        let modelURL = Bundle.main.url(forResource: "Dominos", withExtension: "momd")!
        return NSManagedObjectModel(contentsOf: modelURL)!
    ()

【参考方案2】：

它是：

let urls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return urls.last!

或者

return try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)