从CoreData刷新NSTreeController

Question

I am developing a cocoa app which has NSOutlineView which is binded to NSTreeController with CoreData integration. 我正在开发具有NSOutlineView的可可应用，该应用通过CoreData集成绑定到NSTreeController。

For some purposes, I am deleting some of the nodes in NSTreeController by 为了某些目的，我删除了NSTreeController中的某些节点，方法是

MyTreeController.removeObjectAtArrangedObjectIndexPath(someIndexPath)

But than, I need to reload the NSTreeController back from CoreData by using the current binding. 但是，相比之下，我需要使用当前绑定从CoreData重新加载NSTreeController。 However, I couldn't find a solution because NSTreeController has no reload data function. 但是，我找不到解决方案，因为NSTreeController没有重载数据功能。

Any help or a workaround will be appreciated. 任何帮助或解决方法将不胜感激。

Answer 1

Calling -removeObjectAtArrangedObjectIndexPath against a NSTreeController that is associated with Core Data will remove the object from Core Data. 对与Core Data关联的NSTreeController调用-removeObjectAtArrangedObjectIndexPath会将对象从Core Data中删除。

Calling -fetch: afterwards is going to cause the data to return, it has been deleted. 调用-fetch:之后将导致数据返回，它已被删除。

从CoreData刷新NSTreeController

问题描述

1 个解决方案

解决方案1
1 2016-06-09 00:59:21

从CoreData刷新NSTreeController

问题描述

1 个解决方案

解决方案1 1 2016-06-09 00:59:21

解决方案1
1 2016-06-09 00:59:21