等同于NSCollectionView的ReloadData重绘项目视图 [英] Equivalent of ReloadData for NSCollectionView to redraw item views

问题描述

我有一个切换来改变字体属性。在我的NSOutlineView中，我调用ReloadData来重新渲染所有内容。但是，如何强制NSCollectionView重新渲染。我尝试了

I have a toggle to change the font attributes. In my NSOutlineView, I call ReloadData to have everything re-render. However, how can I force NSCollectionView to re-render. I tried

cvReader.NeedsLayout= true;
cvReader.Layout();

cvReader.NeedsDisplay = true;
cvReader.Display();

无效。任何提示非常感谢。

to no avail. Any hints much appreciated.

更新。我也尝试过

cvReader.NeedsDisplay = true;
cvReader.Window.ViewsNeedDisplay = true;
cvReader.Window.FlushWindowIfNeeded();

以及再次分配内容。它感觉就像项目视图被缓存和不重新生成。也许有一种方法可以清除项目视图缓存？

As well as assigning the content again. It feels like the item views are cached and not regenerated. Maybe there is a way to clear the item view cache?

推荐答案

结果是NSCollectionView项目视图可以通过设置ItemPrototype，例如

Turns out that the NSCollectionView item views can be refreshed by setting the ItemPrototype, e.g.,

ItemPrototype = new SomeViewController()

这会导致重新创建所有现有的视图。

This causes all the existing views to be recreated.

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