检测Swift中的GMSPolyline？ [英] Detect tap on GMSPolyline in Swift?

问题描述

我在检测在我的Google地图上绘制的GMSPolyline上的水龙头时遇到困难，它对GMSpolygones运行得很好，但同样的方法似乎不适用于多段线。我现在的方法适用于多边形，它是：
$ b $ pre $ if（GMSGeometryContainsLocation（coordinate，polygon.path！，false））{
...
}


如何检测多段线上的点击？或者只是靠近它？

解决方案

根据他们的API 从继承从继承 / code>这意味着 GMSPolyline 具有 tappable 属性。所以你需要这样的东西

pre $ let polyLine：GMSPolyline = GMSPolyline（path：newPath）
polyLine.isTappable = true
polyline.map = yourGoogleMap


然后你的 GMSMapViewDelegate 应该使用此函数通知您在 GMSPolyline 图层中的任意位置。

  func mapView（_ mapView：GMSMapView，didTap overlay：GMSOverlay）
 {
 print（User Tapped Layer：\（overlay））
} 
  

I'm struggling with detecting a tap on a GMSPolyline drawn on my Google map, it works just fine with GMSpolygones, but the same approach doesn't seem to work with polyline. My current approach, which works for polygones, is:

if (GMSGeometryContainsLocation(coordinate, polygon.path!, false)) {
    ...
}

Any suggestions how to detect taps on a polyline? Or just close to it?

解决方案

According to their API documentation, GMSPolyline inherits from GMSOverlay which means a GMSPolyline has the property tappable. So you'd want something like this

let polyLine: GMSPolyline = GMSPolyline(path: newPath)
polyLine.isTappable = true
polyline.map = yourGoogleMap

Then your GMSMapViewDelegate should notify you of the tap anywhere within the GMSPolyline layer with this function

func mapView(_ mapView: GMSMapView, didTap overlay: GMSOverlay)
{
  print("User Tapped Layer: \(overlay)")
}

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