【发布时间】:2021-03-18 22:47:33
【问题描述】:
我是 ARCGIS 的新手。任何帮助将不胜感激。 我在 didtap 代表上显示标注像这样
func geoView(_ geoView: AGSGeoView, didTapAtScreenPoint screenPoint: CGPoint, mapPoint: AGSPoint) {
isFromSearch = false
MBProgressHUD.showAdded(to: self.view, animated: true)
self.mapView.identifyLayers(atScreenPoint: screenPoint, tolerance: 12, returnPopupsOnly: false, maximumResultsPerLayer: 10) { (identifyLayerResults: [AGSIdentifyLayerResult]?, error: Error?) in
//check for errors and ensure identifyLayerResults is not nil
MBProgressHUD.hide(for: self.view, animated: true)
if let error = error {
print(error)
return
}
guard let identifyLayerResults = identifyLayerResults else { return }
// iterate the identify layer results
guard identifyLayerResults.count > 0 else {return}
guard identifyLayerResults[0].sublayerResults.count > 0 else {return}
guard identifyLayerResults[0].sublayerResults[0].geoElements.count > 0 else {return}
let result = identifyLayerResults[0].sublayerResults[0].geoElements[0].attributes
self.identifyLayerResult = identifyLayerResults[0]
var title: String? = nil
var subtitle: String? = nil
if ((result["SiteCode"] as? String) != nil) && ((result["SiteName"] as? String) != nil){
title = (result["SiteCode"] as? String)
subtitle = (result["SiteName"] as? String)
}
else {
title = (result["company"] as? String)
subtitle = (result["identifier"] as? String)
}
self.mapView.callout.title = title
self.mapView.callout.detail = subtitle
self.mapView.callout.show(at: mapPoint, screenOffset: .zero, rotateOffsetWithMap: false, animated: true)
}
}
第一次一切正常。但用户也可以使用 REST API 搜索地点 然后 mapview 移动到该点并显示标注
https://******/arcgis/rest/services/Google/MobileiOS3/MapServer/find?
它返回站点,我使用纬度和经度创建 ViewPoint,并显示带有缩小和放大动画的标注代码如下
let pointView = AGSViewpoint(latitude: center.latitude, longitude: center.longitude, scale: 12E7)
self.mapView.setViewpoint(pointView, duration: 2) { (value) in
let pointView1 = AGSViewpoint(latitude: center.latitude, longitude: center.longitude, scale: 12E4)
self.mapView.setViewpoint(pointView1, duration: 2) { (true) in
let wgs84 = AGSSpatialReference(wkid: 4236)
let point = AGSPoint(x: center.latitude, y: center.longitude, spatialReference: wgs84)
let marker = AGSPictureMarkerSymbol(image: UIImage(named: "BluePushpin.png")!)
marker.leaderOffsetX = 9
marker.leaderOffsetY = -16
let graphics = AGSGraphic(geometry: point, symbol: marker, attributes: nil)
self.mGraphicOverlay.graphics.add(graphics)
let cgPoint = CGPoint(x: self.mapView.center.x, y: self.mapView.center.y - (self.mapView.callout.frame.height + 33))
print(cgPoint)
self.mapView.callout.show(at: graphics.geometry as! AGSPoint, screenOffset: cgPoint, rotateOffsetWithMap: false, animated: true)
}
}
之后,当我在地图上点击任何点时,标注总是显示在左上角而第一次 didtap 代表工作正常 当我调试代码并打印标注框架时,它总是显示零 x 和零 y
【问题讨论】:
标签: arcgis gmsmapview arcgis-runtime