隐藏地图注释而不删除它们 [英] Hiding map annotations without deleting them

问题描述

使用 MKMapView 我加载了一堆注释，我希望能够过滤显示分段控件的注释.

Using a MKMapView I have a pile of annoatations loaded onto it and I want to be able to filter the annotations displayed with a segmented control.

我正在使用带有类型变量的自定义注释，因此我可以将它们区分开来，但我一直无法找到一种方法来随意隐藏和显示注释视图的子集.

I'm using custom annotations with a type variable so I can tell them apart from one another but I haven't been able to find a way to hide and display a subset of annotation views at will.

推荐答案

当然，试试这个:

Objective-C 解决方案:

[[yourMapView viewForAnnotation:yourAnnotation] setHidden:YES]

Swift 4 解决方案:

yourMapView.view(for: yourAnnotation)?.isHidden = true

这将返回与指定注释对象关联的视图，然后您可以将视图设置为隐藏.这是 文档.

This will return you the view associated with the specified annotation object, then you can set the view to hidden. Here is the documentation.

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