我一直试图让它工作一段时间,我来这里问 - 如何在Swift中使用CLLocationManagerDelegate方法?我把它放在班上的顶端:
var locationManager = CLLocationManager()
我已将以下内容放入viewDidLoad
方法:
locationManager.delegate = self
locationManager.distanceFilter = kCLDistanceFilterNone
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.startUpdatingLocation()
我尝试使用这些委托方法但无济于事:
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: AnyObject[]!) {
locationReceived = true
}
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
locationReceived = false
}
我也尝试在函数前使用@optional,但Xcode会抛出编译器错误。有什么想法吗?
答案 0 :(得分:57)
如果您还没有将NSLocationAlwaysUsageDescription
或NSLocationWhenInUseUsageDescription
键添加到您的plist,它们现在已成为必填项,
iOS8 +要求将这两个字符串中的一个设置为使用位置。您使用哪一个取决于您打算如何询问该位置。
即使应用未打开并正在使用,也请将NSLocationAlwaysUsageDescription
用于要使用设备位置的应用。
仅在应用程序处于打开和使用状态时,才能将NSLocationWhenInUseUsageDescription
用于要使用设备位置的应用。
注意:在构建和运行之前添加字符串时,请从设备中删除该应用并让其进行全新安装。似乎如果应用程序在升级到iOS8之前被授权使用位置,则它不会再次请求您的许可,也不会看到您设置这些字符串。执行删除和清理安装解决了这个问题。
设置任一字符串会在安装/首次使用时提示弹出:"允许" ThisApp"即使您不使用应用程序即可访问您的位置。
这是 plist 文件的屏幕。
答案 1 :(得分:6)
首先在plist文件中添加这两行
1)NSLocationWhenInUseUsageDescription
2)NSLocationAlwaysUsageDescription
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate
var seenError : Bool = false
var locationFixAchieved : Bool = false
var locationStatus : NSString = "Not Started"
var locationManager: CLLocationManager!
override func viewDidLoad() {
super.viewDidLoad()
}
func initLocationManager() {
seenError = false
locationFixAchieved = false
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.locationServicesEnabled
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
}
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
locationManager.stopUpdatingLocation()
if (error) {
if (seenError == false) {
seenError = true
print(error)
}
}
}
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: AnyObject[]!) {
if (locationFixAchieved == false) {
locationFixAchieved = true
var locationArray = locations as NSArray
var locationObj = locationArray.lastObject as CLLocation
var coord = locationObj.coordinate
println(coord.latitude)
println(coord.longitude)
}
}
func locationManager(manager: CLLocationManager!,
didChangeAuthorizationStatus status: CLAuthorizationStatus) {
var shouldIAllow = false
switch status {
case CLAuthorizationStatus.Restricted:
locationStatus = "Restricted Access to location"
case CLAuthorizationStatus.Denied:
locationStatus = "User denied access to location"
case CLAuthorizationStatus.NotDetermined:
locationStatus = "Status not determined"
default:
locationStatus = "Allowed to location Access"
shouldIAllow = true
}
NSNotificationCenter.defaultCenter().postNotificationName("LabelHasbeenUpdated", object: nil)
if (shouldIAllow == true) {
NSLog("Location to Allowed")
// Start location services
locationManager.startUpdatingLocation()
} else {
NSLog("Denied access: \(locationStatus)")
}
}
答案 2 :(得分:4)
获取用户当前位置: -
第1步: let locationManager = CLLocationManager() // make object of CLLocationManager class.
第2步: In viewDidLoad instantiate the CLLocationManager class like,
//用于背景
self.locationManager.requestAlwaysAuthorization()
// For use in foreground
self.locationManager.requestWhenInUseAuthorization()
if (CLLocationManager.locationServicesEnabled())
{
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
locationManager.startUpdatingLocation()
}
第3步:现在实施CLLocationManager
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
var locValue:CLLocationCoordinate2D = manager.location.coordinate
println("locations = \(locValue.latitude) \(locValue.longitude)")
}
第4步:
不要忘记在Info.plist中添加NSLocationAlwaysUsageDescription
,因为在iOS 8中必须添加它。这将要求允许使用用户的位置。
答案 3 :(得分:3)
我有同样的问题。 didUpdateLocations - 无效。运行你的应用程序 转到“设置”页面 - >隐私 - >位置和关闭位置服务。 didFailWithError将捕获有关缺少位置服务的错误。然后打开它。从那时起,didUpdateLocations将捕获位置。
答案 4 :(得分:0)
这是一个旧线程,但上面没有一个在Swift 2.2 xCode 7.3.1上为我工作。
我正在使用的问题是:
func locationManager(manager: CLLocationManager!, didUpdateLocation locations: [AnyObject]!) {
print("Got location")
locationManager.stopUpdatingLocation()
}
这从未被召唤过。当我改为:
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
print("Got location")
locationManager.stopUpdatingLocation()
}
一切顺利。似乎在使用[AnyObject]
时未调用委托