iOS Swift如何打开位置权限弹出窗口
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【中文标题】iOS Swift如何打开位置权限弹出窗口【英文标题】：iOS Swift How to open Location Permission popup 【发布时间】：2019-02-18 01:01:06 【问题描述】：var locMgr = INTULocationManager.sharedInstance()
locMgr.requestLocation(withDesiredAccuracy: .city, timeout: 30, delayUntilAuthorized: true,block: (currentLoc: CLLocation!, achievedAccuracy: INTULocationAccuracy, status: INTULocationStatus) -> Void in
if status == INTULocationStatus.success
else
使用过 INTULocationManager , Swift 4.1 , ios 11.1
如果第一次运行此代码会弹出位置权限请求
但是如果我拒绝了，下次就不会弹出这个了。
如何打开权限弹窗？
我创建按钮
运行这段代码
let locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.requestWhenInUseAuthorization()
但没用
【问题讨论】：
【参考方案1】：一旦用户拒绝权限，没有任何默认功能会弹出位置权限。您需要向用户显示需要权限的警报，然后将用户重定向到设置屏幕。 这是您可以使用的完整代码。 定义一个检查位置权限的函数。
func hasLocationPermission() -> Bool
var hasPermission = false
if CLLocationManager.locationServicesEnabled()
switch CLLocationManager.authorizationStatus()
case .notDetermined, .restricted, .denied:
hasPermission = false
case .authorizedAlways, .authorizedWhenInUse:
hasPermission = true
else
hasPermission = false
return hasPermission
现在通过此功能检查位置权限，并在需要时显示警报。
if !hasLocationPermission()
let alertController = UIAlertController(title: "Location Permission Required", message: "Please enable location permissions in settings.", preferredStyle: UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title: "Settings", style: .default, handler: (cAlertAction) in
//Redirect to Settings app
UIApplication.shared.open(URL(string:UIApplicationOpenSettingsURLString)!)
)
let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel)
alertController.addAction(cancelAction)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
别忘了导入CoreLocation。
Swift 5.3 和 iOS 14 版本
func hasLocationPermission() -> Bool
var hasPermission = false
let manager = CLLocationManager()
if CLLocationManager.locationServicesEnabled()
switch manager.authorizationStatus
case .notDetermined, .restricted, .denied:
hasPermission = false
case .authorizedAlways, .authorizedWhenInUse:
hasPermission = true
@unknown default:
break
else
hasPermission = false
return hasPermission
if !hasLocationPermission()
let alertController = UIAlertController(title: "Location Permission Required", message: "Please enable location permissions in settings.", preferredStyle: .alert)
let okAction = UIAlertAction(title: "Settings", style: .default, handler: (cAlertAction) in
//Redirect to Settings app
UIApplication.shared.open(URL(string:UIApplication.openSettingsURLString)!)
)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
alertController.addAction(cancelAction)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
【讨论】：
导入核心位置 'authorizationStatus()' 在 iOS 14.0 中已弃用【参考方案2】：斯威夫特 5
一旦用户拒绝该权限，警报就会对您的应用禁用，并且不会再次显示。 您可以向用户显示需要权限的弹出窗口。
这是您可以使用的完整代码
if CLLocationManager.locationServicesEnabled()
switch CLLocationManager.authorizationStatus()
case .notDetermined, .restricted, .denied:
showPermissionAlert()
case .authorizedAlways, .authorizedWhenInUse:
locationManager.startUpdatingLocation()
else
locationManager.startUpdatingLocation()
现在通过此功能检查位置权限，并在需要时显示警报。
func showPermissionAlert()
let alertController = UIAlertController(title: "Location Permission Required", message: "Please enable location permissions in settings.", preferredStyle: UIAlertController.Style.alert)
let okAction = UIAlertAction(title: "Settings", style: .default, handler: (cAlertAction) in
//Redirect to Settings app
UIApplication.shared.open(URL(string:UIApplication.openSettingsURLString)!)
)
let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertAction.Style.cancel)
alertController.addAction(cancelAction)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
【讨论】：
【参考方案3】：如果权限被用户拒绝，则打开权限弹出窗口
/* func checkLocation()
if CLLocationManager.authorizationStatus() != .authorizedWhenInUse
print("requesting autorization")
locationManager.requestWhenInUseAuthorization()
else
print("start updating location")
*/
func askEnableLocationService() ->String
var showAlertSetting = false
var showInitLocation = false
if CLLocationManager.locationServicesEnabled()
switch CLLocationManager.authorizationStatus()
case .denied:
showAlertSetting = true
print("HH: kCLAuthorizationStatusDenied")
case .restricted:
showAlertSetting = true
print("HH: kCLAuthorizationStatusRestricted")
case .authorizedAlways:
showInitLocation = true
print("HH: kCLAuthorizationStatusAuthorizedAlways")
case .authorizedWhenInUse:
showInitLocation = true
print("HH: kCLAuthorizationStatusAuthorizedWhenInUse")
case .notDetermined:
showInitLocation = true
print("HH: kCLAuthorizationStatusNotDetermined")
default:
break
else
showAlertSetting = true
print("HH: locationServicesDisabled")
if showAlertSetting
let alertController = UIAlertController(title: "xxxxxx", message: "Please enable location service in the settings", preferredStyle: .alert)
let OKAction = UIAlertAction(title: "OK", style: .default) (action:UIAlertAction!) in
if let url = URL(string: UIApplicationOpenSettingsURLString)
UIApplication.shared.open(url, options: [:], completionHandler: nil)
alertController.addAction(OKAction)
self.window?.rootViewController?.present(alertController, animated: true, completion:nil)
if showInitLocation
return "YES"
return "NO"
【讨论】：
这在 OP 描述的情况下不起作用，其中权限对话框已经显示并且权限被用户拒绝。 @Paulw11 检查此功能它会自动重定向设置。 是的，您编辑的代码会，但它与已经接受的答案基本相同【参考方案4】：这是默认行为。首次显示弹出窗口后。随后的请求将被视为拒绝或第一次选择时选择的任何内容。但是，您可以实现自己的警报并将用户直接发送到设置应用程序以授予位置访问权限，如下所示：
//check if user has denied the access on first popup
if !permissionGranted
let permissionAlert = UIAlertController(title: "Location Access", message: "Requires location access to take advantage of this feature. Please provide location access from settings", preferredStyle: .alert)
let cancelAction = UIAlertAction(title: "Cancel", style: .default, handler: nil)
let settingAction = UIAlertAction(title: "Settings", style: .default) (action) in
guard let appSettingURl = URL(string: UIApplicationOpenSettingsURLString) else return
if UIApplication.shared.canOpenURL(appSettingURl)
UIApplication.shared.open(appSettingURl, options: [:], completionHandler: nil)
permissionAlert.addAction(cancelAction)
permissionAlert.addAction(settingAction)
present(permissionAlert, animated: true, completion: nil)
【讨论】：
【参考方案5】：Complete Solution : (iOS 14+ and also for prior versions)
1)首先获取授权状态：-
func locationAuthorizationStatus() -> CLAuthorizationStatus
let locationManager = CLLocationManager()
var locationAuthorizationStatus : CLAuthorizationStatus
if #available(iOS 14.0, *)
locationAuthorizationStatus = locationManager.authorizationStatus
else
// Fallback on earlier versions
locationAuthorizationStatus = CLLocationManager.authorizationStatus()
return locationAuthorizationStatus
2)然后检查位置权限：-
func hasLocationPermission() -> Bool
var hasPermission = false
let manager = self.locationAuthorizationStatus()
if CLLocationManager.locationServicesEnabled()
switch manager
case .notDetermined, .restricted, .denied:
hasPermission = false
case .authorizedAlways, .authorizedWhenInUse:
hasPermission = true
@unknown default:
break
else
hasPermission = false
return hasPermission
3)然后显示警报
if !hasLocationPermission()
let alertController = UIAlertController(title: "Location Permission Required", message: "Please enable location permissions in settings.", preferredStyle: .alert)
let okAction = UIAlertAction(title: "Settings", style: .default, handler: (cAlertAction) in
//Redirect to Settings app
UIApplication.shared.open(URL(string:UIApplication.openSettingsURLString)!)
)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
alertController.addAction(cancelAction)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
干杯 :) :)
【讨论】：
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