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我有要在我的 map 应用程序中打开的纬度和经度。我尝试了来自 HERE 的这段代码.
func goToMap(){
var lat1 : NSString = self.venueLat
var lng1 : NSString = self.venueLng
var latitude:CLLocationDegrees = lat1.doubleValue
var longitude:CLLocationDegrees = lng1.doubleValue
var coordinate = CLLocationCoordinate2DMake(latitude, longitude)
var placemark : MKPlacemark = MKPlacemark(coordinate: coordinate, addressDictionary:nil)
var mapItem:MKMapItem = MKMapItem(placemark: placemark)
mapItem.name = "Target location"
let launchOptions:NSDictionary = NSDictionary(object: MKLaunchOptionsDirectionsModeDriving, forKey: MKLaunchOptionsDirectionsModeKey)
var currentLocationMapItem:MKMapItem = MKMapItem.mapItemForCurrentLocation()
MKMapItem.openMapsWithItems([currentLocationMapItem, mapItem], launchOptions: launchOptions)
}
此函数成功打开 map ,但未显示任何图钉。它还显示了我不想要的用户位置。我只想在 map 上根据提供的纬度和经度定位。
最佳答案
这段代码对我来说工作正常。
func openMapForPlace() {
let lat1 : NSString = self.venueLat
let lng1 : NSString = self.venueLng
let latitude:CLLocationDegrees = lat1.doubleValue
let longitude:CLLocationDegrees = lng1.doubleValue
let regionDistance:CLLocationDistance = 10000
let coordinates = CLLocationCoordinate2DMake(latitude, longitude)
let regionSpan = MKCoordinateRegionMakeWithDistance(coordinates, regionDistance, regionDistance)
let options = [
MKLaunchOptionsMapCenterKey: NSValue(MKCoordinate: regionSpan.center),
MKLaunchOptionsMapSpanKey: NSValue(MKCoordinateSpan: regionSpan.span)
]
let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil)
let mapItem = MKMapItem(placemark: placemark)
mapItem.name = "\(self.venueName)"
mapItem.openInMapsWithLaunchOptions(options)
}
对于 swift 3.0:
import UIKit
import MapKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
openMapForPlace()
}
func openMapForPlace() {
let latitude: CLLocationDegrees = 37.2
let longitude: CLLocationDegrees = 22.9
let regionDistance:CLLocationDistance = 10000
let coordinates = CLLocationCoordinate2DMake(latitude, longitude)
let regionSpan = MKCoordinateRegionMakeWithDistance(coordinates, regionDistance, regionDistance)
let options = [
MKLaunchOptionsMapCenterKey: NSValue(mkCoordinate: regionSpan.center),
MKLaunchOptionsMapSpanKey: NSValue(mkCoordinateSpan: regionSpan.span)
]
let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil)
let mapItem = MKMapItem(placemark: placemark)
mapItem.name = "Place Name"
mapItem.openInMaps(launchOptions: options)
}
}
swift 5:
let latitude: CLLocationDegrees = Double(K.latitude)!
let longitude: CLLocationDegrees = Double(K.longitude)!
let regionDistance:CLLocationDistance = 10000
let coordinates = CLLocationCoordinate2DMake(latitude, longitude)
let regionSpan = MKCoordinateRegion(center: coordinates, latitudinalMeters: regionDistance, longitudinalMeters: regionDistance)
let options = [
MKLaunchOptionsMapCenterKey: NSValue(mkCoordinate: regionSpan.center),
MKLaunchOptionsMapSpanKey: NSValue(mkCoordinateSpan: regionSpan.span)
]
let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil)
let mapItem = MKMapItem(placemark: placemark)
mapItem.name = K.companyName
mapItem.openInMaps(launchOptions: options)
关于ios - 如何以编程方式快速打开带有坐标的 map 应用程序?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28604429/
我正在寻求图像处理/计算机视觉专家的建议。尝试开发一种强大的、可缩放的算法来提取人体的尺寸。例如,他的上半身宽度。 问题: 没有面孔的图像 坐着的人 多个面孔 人拿着某物,从而覆盖了他的 body 的
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