当我尝试从项目中删除核心数据条目时,遇到错误
cannot invoke 'deleteObject' with an argument list of '([AnyObject]?)'
我认为这基本上是在要求我投射对象,但是当我尝试此操作时,会遇到相同的错误。我的代码如下:
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let context = appDelegate.managedObjectContext
var error:NSError? = nil
let request = NSFetchRequest(entityName: projectEntityName)
let pred = NSPredicate(format: "projectName = %@", projectName)
request.predicate = pred
let objects = context?.executeFetchRequest(request, error: &error)
if let objectList = objects {
for thisProject in objectList {
thisProject.deleteObject(objects)
}
}
appDelegate.saveContext()
有人能帮忙吗?
最佳答案
您混合了变量。 deleteObject
是NSManagedObjectContext的方法,您将要删除的对象作为参数传递:
if let objectList = objects {
for thisProject in objectList {
context!.deleteObject(thisProject)
}
}