在macOS Cocoa应用程序中，如何在填充了NSTreeController的NSOutlineView中仅显示与NSPredicate匹配的第一个“ x”元素？

Question

I am developing a macOS proof of concept project. I have, in the main window, a NSOutlineView populated with a NSTreeController via Cocoa bindings and Core Data. Under the NSOutlineView, I have a search field and a "Recents" button, a bit like Xcode has in the project navigator. My Core Data model object has a "modifiedAt" property and, when the user selects the "Recents" button, I would like to show only the last 10 modified files in the OutlineView. Any suggestions on how to achieve that ? Thank you in advance for any help.

Answer 1

将fetchLimit上的NSFetchRequest设置为fetchLimit的数字（在示例中为10）。