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  • CoreDataStack

    //
    //  Stack.swift
    //  Bubble Tea Finder
    //
    //  Copyright © 2016 Pietro Rea. All rights reserved.
    //
    
    import CoreData
    class CoreDataStack {
        let modelName = "Bubble_Tea_Finder"
        
        private lazy var applicationDirectoryPath: NSURL = {
            let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
            let url = urls[urls.count - 1]
            print("沙盒路径:(url)")
            return url
        }()
        
        lazy var context: NSManagedObjectContext = {
            let managedContext = NSManagedObjectContext(concurrencyType: .MainQueueConcurrencyType)
            managedContext.persistentStoreCoordinator = self.persistentStoreCoordinator
            return managedContext
        }()
        
        private lazy var persistentStoreCoordinator:NSPersistentStoreCoordinator = {
            let psc = NSPersistentStoreCoordinator(managedObjectModel: self.model)
            let url = self.applicationDirectoryPath.URLByAppendingPathComponent(self.modelName)
            let options = [NSMigratePersistentStoresAutomaticallyOption : true]
            do{
                try psc.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: options)
            } catch let error as NSError{
                print("Error add persistent store : (error)")
            }
            return psc
        }()
        
        private lazy var model: NSManagedObjectModel = {
            let url = NSBundle.mainBundle().URLForResource(self.modelName, withExtension: "momd")
            print("资源路径:(url)")
            let model = NSManagedObjectModel(contentsOfURL: url!)
            return model!
        }()
        
        func saveContext() {
            if context.hasChanges {
                do {
                    try context.save()
                } catch let error as NSError{
                    print("Error save : (error)")
                    abort()
                }
            }
        }
    }

    保存失败后,要断开连接

    1、获取资源用NSBundle

    2、获取沙盒路径用NSFileManager

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  • 原文地址:https://www.cnblogs.com/sallet/p/5332288.html
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