如何存储用户的当前位置,并在地图上显示该位置?
我可以在地图上显示预定义的坐标,只是不知道如何从设备接收信息。
我也知道我必须添加一些项目到Plist。我该怎么做呢?
如何存储用户的当前位置,并在地图上显示该位置?
我可以在地图上显示预定义的坐标,只是不知道如何从设备接收信息。
我也知道我必须添加一些项目到Plist。我该怎么做呢?
当前回答
你应该做这些步骤:
add CoreLocation.framework to BuildPhases -> Link Binary With Libraries (no longer necessary as of XCode 7.2.1) import CoreLocation to your class - most likely ViewController.swift add CLLocationManagerDelegate to your class declaration add NSLocationWhenInUseUsageDescription and NSLocationAlwaysUsageDescription to plist init location manager: locationManager = CLLocationManager() locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestAlwaysAuthorization() locationManager.startUpdatingLocation() get User Location By: func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { let locValue:CLLocationCoordinate2D = manager.location!.coordinate print("locations = \(locValue.latitude) \(locValue.longitude)") }
其他回答
NSLocationWhenInUseUsageDescription =请求权限使用位置服务时,应用程序是在后台。在你的plist文件中。
如果这是工作,然后请投票的答案。
你应该做这些步骤:
add CoreLocation.framework to BuildPhases -> Link Binary With Libraries (no longer necessary as of XCode 7.2.1) import CoreLocation to your class - most likely ViewController.swift add CLLocationManagerDelegate to your class declaration add NSLocationWhenInUseUsageDescription and NSLocationAlwaysUsageDescription to plist init location manager: locationManager = CLLocationManager() locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestAlwaysAuthorization() locationManager.startUpdatingLocation() get User Location By: func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { let locValue:CLLocationCoordinate2D = manager.location!.coordinate print("locations = \(locValue.latitude) \(locValue.longitude)") }
下面是一个适用于我的复制粘贴示例。
http://swiftdeveloperblog.com/code-examples/determine-users-current-location-example-in-swift/
import UIKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate {
var locationManager:CLLocationManager!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
determineMyCurrentLocation()
}
func determineMyCurrentLocation() {
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
if CLLocationManager.locationServicesEnabled() {
locationManager.startUpdatingLocation()
//locationManager.startUpdatingHeading()
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let userLocation:CLLocation = locations[0] as CLLocation
// Call stopUpdatingLocation() to stop listening for location updates,
// other wise this function will be called every time when user location changes.
// manager.stopUpdatingLocation()
print("user latitude = \(userLocation.coordinate.latitude)")
print("user longitude = \(userLocation.coordinate.longitude)")
}
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error)
{
print("Error \(error)")
}
}
首先在项目中添加两个框架
1:地
2:共重定位(从XCode 7.2.1开始不再需要)
在类中定义
var manager:CLLocationManager!
var myLocations: [CLLocation] = []
然后在viewDidLoad方法中编写此代码
manager = CLLocationManager()
manager.desiredAccuracy = kCLLocationAccuracyBest
manager.requestAlwaysAuthorization()
manager.startUpdatingLocation()
//Setup our Map View
mapobj.showsUserLocation = true
不要忘记在plist文件中添加这两个值
1: NSLocationWhenInUseUsageDescription
2: NSLocationAlwaysUsageDescription
要获取用户的当前位置,你需要声明:
let locationManager = CLLocationManager()
在viewDidLoad()中,你必须实例化CLLocationManager类,就像这样:
// Ask for Authorisation from the User.
self.locationManager.requestAlwaysAuthorization()
// For use in foreground
self.locationManager.requestWhenInUseAuthorization()
if CLLocationManager.locationServicesEnabled() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
locationManager.startUpdatingLocation()
}
然后在CLLocationManagerDelegate方法中,你可以获得用户当前的位置坐标:
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
guard let locValue: CLLocationCoordinate2D = manager.location?.coordinate else { return }
print("locations = \(locValue.latitude) \(locValue.longitude)")
}
在信息中。plist你必须添加NSLocationAlwaysUsageDescription 和你的自定义警报消息像;AppName(演示应用程序)想使用您的当前位置。