我在这里使用for each循环将数据列表保存到核心数据中。但是,它只能帮助我将for循环中的最后数据保存到核心数据中,它有什么问题?我无法将所有数据保存到核心数据中。以下是我正在处理的代码......
let appDelegate : AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let context : NSManagedObjectContext = appDelegate.managedObjectContext
let category = NSEntityDescription.insertNewObjectForEntityForName("Category", inManagedObjectContext:context)
RestApiManager.sharedInstance.makeGetRequest("testingserver", onCompletion: {json in
for result in json["record"].arrayValue
{
print(result)
let id = result["mc_termid"].stringValue
let name = result["mc_name"].stringValue
let parent = result["mc_parent"].stringValue
let color = result["mc_color"].stringValue
let update = result["mc_updated"].stringValue
let termName = result["mc_termname"].stringValue
let status = result["mc_status"].stringValue
category.setValue(id, forKey: "mc_termid")
category.setValue(name, forKey: "mc_name")
category.setValue(parent, forKey: "mc_parent")
category.setValue(color, forKey: "mc_color")
category.setValue(update, forKey: "mc_updated")
category.setValue(termName, forKey: "mc_termname")
category.setValue(status, forKey: "mc_status")
}
do
{
try context.save()
print("Category save to local database successfully.")
}
catch
{
}
})
答案 0 :(得分:1)
每次迭代数组中的一个元素时,都需要插入一个managedobject 所以将类别声明放入迭代块中。
let appDelegate : AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let context : NSManagedObjectContext = appDelegate.managedObjectContext
RestApiManager.sharedInstance.makeGetRequest("testingserver", onCompletion: {json in
for result in json["record"].arrayValue
{
let category = NSEntityDescription.insertNewObjectForEntityForName("Category", inManagedObjectContext:context)
print(result)
let id = result["mc_termid"].stringValue
let name = result["mc_name"].stringValue
let parent = result["mc_parent"].stringValue
let color = result["mc_color"].stringValue
let update = result["mc_updated"].stringValue
let termName = result["mc_termname"].stringValue
let status = result["mc_status"].stringValue
category.setValue(id, forKey: "mc_termid")
category.setValue(name, forKey: "mc_name")
category.setValue(parent, forKey: "mc_parent")
category.setValue(color, forKey: "mc_color")
category.setValue(update, forKey: "mc_updated")
category.setValue(termName, forKey: "mc_termname")
category.setValue(status, forKey: "mc_status")
}
do
{
try context.save()
print("Category save to local database successfully.")
}
catch
{
}
})