我正在创建一个列表应用程序,并且有一个Coredata模型,其中包含两个属性(一个用于项目,一个用于详细信息)
我可以保存并输入数据,它会正确显示但是当我关闭并重新打开应用程序时,一切都有自己的单元格。
任何帮助人?
CellAtIndex代码
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell")! as UITableViewCell
let item = listItems[indexPath.row]
let detailed = detailedItems[indexPath.row]
cell.textLabel?.text = item.valueForKey("item") as? String
cell.detailTextLabel?.text = detailed.valueForKey("detail") as? String
return cell
}
ViewWillAppear代码
verride func viewWillAppear(animated: Bool) {
//Load First Item
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
let fetchrequest = NSFetchRequest(entityName: "ListEnt")
do{
let results = try managedContext.executeFetchRequest(fetchrequest)
listItems = results as! [NSManagedObject]
detailedItems = results as! [NSManagedObject]
}catch{
print("Error")
}
}
这是保存的代码,我有一个对话框,带有文本字段,每个文本字段都有自己的保存功能
//Saving Items//
func saveItem(itmToSave: String){
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
let entity = NSEntityDescription.entityForName("ListEnt", inManagedObjectContext: managedContext)
let item = NSManagedObject(entity: entity!, insertIntoManagedObjectContext: managedContext)
item.setValue(itmToSave, forKey: "item")
do{
try managedContext.save()
listItems.append(item)
}catch{
print("Saving Main Item")
}
}
//Saving Details
func saveItem2(itmToSave2: String){
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
let entity = NSEntityDescription.entityForName("ListEnt", inManagedObjectContext: managedContext)
let item2 = NSManagedObject(entity: entity!, insertIntoManagedObjectContext: managedContext)
item2.setValue(itmToSave2, forKey: "detail")
do{
try managedContext.save()
detailedItems.append(item2)
}catch{
print("Saving deatil Item")
}
}
问题图片
输入数据时的外观(正确方式)
关闭并重新打开应用时的外观如何
干杯伙伴