ios - Swift:获取 CoreData 作为数组

Question

我想获取 sqlite 表中所有保存的数据。

我目前正在这样做:

 func GetAllData() -> NSArray
{
    var error : NSError? = nil;
    var request : NSFetchRequest = NSFetchRequest(entityName: "Locations");
    let result : [AnyObject] = managedObjectContext!.executeFetchRequest(request, error:&error)!;
      var elements : NSMutableArray = NSMutableArray();
    for fetchedObject in result
    {
        elements.addObject(fetchedObject[0]);
    }
    print(elements);
    return elements;
}

我在 Objective-C 中获取数据没有问题，但很快我就搞不懂了!

数据保存正常。我有两行“名称”和“类别”。如何显示所有保存的数据？

Answer 1

您应该将所有对象从 CoreData 加载到 NSManaged 对象的数组/字典中。

例如:

    var locations  = [Locations]() // Where Locations = your NSManaged Class

    var fetchRequest = NSFetchRequest(entityName: "Locations")
    locations = context.executeFetchRequest(fetchRequest, error: nil) as [Locations]

    // Then you can use your properties.

    for location in locations {

      print(location.name)   

    }