使用mapbox自定义MGLPolyline

Question

刚开始使用Mapbox，设法通过在locationManaged didUpdateLocations中添加它来绘制MGLPolyline

   var shape = MGLPolyline(coordinates: &a, count: UInt(a.count))
   mapView.addAnnotation(shape) 

1. 更改线宽并不会在屏幕上更改

func mapView(mapView: MGLMapView, lineWidthForPolylineAnnotation annotation: MGLPolyline) -> CGFloat { return 20.0 }

1. 如何将笔触默认颜色从黑色更改为其他颜色？

Answer 1

您需要将地图委托设置为self才能使功能正常工作。这是代码：

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启动viewController

MGLMapViewDelegate

然后在设置地图后，像这样添加class yourController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate, MGLMapViewDelegate{

self.mapView.delegate = self

然后你的功能将起作用：

mapView = MGLMapView(frame: mapViewWrapper.bounds, styleURL: NSURL(string: Mapbox.getTheme()))
mapView = Mapbox.configure(mapView)
mapView.setCenterCoordinate(appleMap.userLocation.coordinate, zoomLevel: 12, animated: true)
mapViewWrapper.addSubview(mapView)
self.mapView.delegate = self

Answer 2

@denislexic说了什么，但是请注意，一旦设置了初始宽度，就无法改变宽度。