MapView批注中的较长字幕(快速) [英] Longer subtitles in MapView annotations (swift)

问题描述

我有一个mapView带有显示标题和字幕的注释.字幕有时长于注释的宽度，所以我想知道我是否可以使它们多行? 到目前为止，它是这样编码的:

I have a mapView with annotations displaying titles and subtitles. The subtitles are sometimes longer than the width of the annotation, so I am wondering if i can make them multiline? It's coded like this so far:

func annotate(newCoordinate, title: String, subtitle: String) {
    let annotation = MKPointAnnotation()
    annotation.coordinate = newCoordinate
    annotation.title = title
    annotation.subtitle = subtitle
    self.map.addAnnotation(annotation)    
}

然后我设置了一些选项

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {...}

与此处无关.

可以创建自定义注释视图吗? 我已经尝试了几件事，但是没有任何效果.我能得到的最接近的效果是添加一个按钮以分别显示较长的字幕，但我宁愿将其放在批注中.

Is it posible to make a custom annotation view? I've tried a couple of things, but nothing worked. The closest I can get is adding a button to display the longer subtitle separately, but i'd rather have it inside the annotation.

有可能吗?

推荐答案

我弄清楚了，我在viewForAnnotation中添加了一个标签，它就可以了

I figured it out, I added a label in viewForAnnotation and it just worked

¯\ _(ツ)_/¯

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {

    if annotation is MKUserLocation {
        //return nil so map view draws "blue dot" for standard user location
        return nil
    }

    let reuseId = "pin"

    var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView
    if pinView == nil {
        pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
        pinView!.canShowCallout = true
    }
    else {
        pinView!.annotation = annotation
    }

    //THIS IS THE GOOD BIT
    let subtitleView = UILabel()
    subtitleView.font = subtitleView.font.fontWithSize(12)
    subtitleView.numberOfLines = 0
    subtitleView.text = annotation.subtitle!
    pinView!.detailCalloutAccessoryView = subtitleView


    return pinView
}

这篇关于MapView批注中的较长字幕(快速)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！