Hoe kan ik controleren of locatieservice is ingeschakeld voor mijn app?
Ik heb twee storyboards en ik wil de locatieservice controleren. Als de locatieservice is ingeschakeld voor mijn app, wil ik een kaart-storyboard met locatie starten. Anders wil ik nog een storyboard lanceren. Hoe kan ik programmatisch doen?
Antwoord 1, autoriteit 100%
Dit is de juiste.
if ([CLLocationManager locationServicesEnabled]){
NSLog(@"Location Services Enabled");
if ([CLLocationManager authorizationStatus]==kCLAuthorizationStatusDenied){
alert = [[UIAlertView alloc] initWithTitle:@"App Permission Denied"
message:@"To re-enable, please go to Settings and turn on Location Service for this app."
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
}
Antwoord 2, autoriteit 20%
Getest op iOS 9.2
Voor het verkrijgen van locatie-updates moeten we altijd controleren
- Locatieservices ingeschakeld op het iOS-apparaat van de gebruiker en
- Locatieservices ingeschakeld voor bepaalde app
en de gebruiker starten op het juiste instellingenscherm om in te schakelen
Lanceer de pagina met locatie-instellingen voor iOS-apparaten
Stap.1 Ga naar Projectinstellingen –> Info –> URL-typen –> Nieuwe URL-schema’s toevoegen
Stap.2 Gebruik onderstaande code om de locatie-instellingenpagina van de telefoon te openen:
(Opmerking: het URL-schema is anders in iOS 10+, we controleren de versie zoals hier)
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice
currentDevice] systemVersion] compare:v options:NSNumericSearch] ==
NSOrderedAscending)
//Usage
NSString* url = SYSTEM_VERSION_LESS_THAN(@"10.0") ? @"prefs:root=LOCATION_SERVICES" : @"App-Prefs:root=Privacy&path=LOCATION";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString: url]];
Lanceer de pagina met locatie-instellingen voor apps
Gebruik onderstaande code om de locatie-instellingenpagina van de directe applicatie te openen
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
Hier is het volledige codevoorbeeld:
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice
currentDevice] systemVersion] compare:v options:NSNumericSearch] ==
NSOrderedAscending)
CLLocationManager *locationManager;
-(void) checkLocationServicesAndStartUpdates
{
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
if ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])
{
[locationManager requestWhenInUseAuthorization];
}
//Checking authorization status
if (![CLLocationManager locationServicesEnabled] && [CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Location Services Disabled!"
message:@"Please enable Location Based Services for better results! We promise to keep your location private"
delegate:self
cancelButtonTitle:@"Settings"
otherButtonTitles:@"Cancel", nil];
//TODO if user has not given permission to device
if (![CLLocationManager locationServicesEnabled])
{
alertView.tag = 100;
}
//TODO if user has not given permission to particular app
else
{
alertView.tag = 200;
}
[alertView show];
return;
}
else
{
//Location Services Enabled, let's start location updates
[locationManager startUpdatingLocation];
}
}
Behandel de klik van de gebruiker en start de juiste locatie-instellingen
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex == 0)//Settings button pressed
{
if (alertView.tag == 100)
{
//This will open ios devices location settings
NSString* url = SYSTEM_VERSION_LESS_THAN(@"10.0") ? @"prefs:root=LOCATION_SERVICES" : @"App-Prefs:root=Privacy&path=LOCATION";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString: url]];
}
else if (alertView.tag == 200)
{
//This will opne particular app location settings
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
}
}
else if(buttonIndex == 1)//Cancel button pressed.
{
//TODO for cancel
}
}
Antwoord 3, autoriteit 15%
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
NSLog(@"%@",error.userInfo);
if([CLLocationManager locationServicesEnabled]){
NSLog(@"Location Services Enabled");
if([CLLocationManager authorizationStatus]==kCLAuthorizationStatusDenied){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"App Permission Denied"
message:@"To re-enable, please go to Settings and turn on Location Service for this app."
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
}
}
Reden hierachter, deze methode zal aanroepen wanneer uw service de locatieservice zal uitschakelen. deze code is nuttig voor mij.
Antwoord 4, autoriteit 9%
Controleer CLLocationManager’s locationServicesEnabledeigenschap om de systeembrede beschikbaarheid te controleren. Gebruik uw CLLocationManagerDelegate’s locationManager: didFailWithError:methode en controleer op een kCLErrorDenied-fout om te zien of de gebruiker locatieservices heeft geweigerd.
BOOL locationAllowed = [CLLocationManager locationServicesEnabled];
if (!locationAllowed)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Location Service Disabled"
message:@"To re-enable, please go to Settings and turn on Location Service for this app."
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
[alert release];
}
gebruik deze code voor uw app
- (void)viewDidLoad
{
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyKilometer;
// Set a movement threshold for new events.
locationManager.distanceFilter = 500;
[locationManager startUpdatingLocation];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations {
// If it's a relatively recent event, turn off updates to save power
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(@"%@",error);
}
Als de locatieservice voor uw app is uitgeschakeld, krijgt u een foutmelding
Error Domain=kCLErrorDomain Code=1 "The operation couldn’t be completed. (kCLErrorDomain error 1.)"
Antwoord 5, autoriteit 9%
Bijgewerkt in de nieuwste Swift 5.0, Xcode 11.2.1
import UIKit
import CoreLocation
Gebruikersconstanten
struct UserConstants {
static let latitude = "latitude"
static let longitude = "longitude"
static let lastKnownLatitude = "lastKnownLatitude"
static let lastKnownLongitude = "lastKnownLongitude"
}
Locatiemanager afgevaardigde voor het bewaken van locatiewijzigingen
@objc protocol LocationManagerDelegate {
@objc optional func getLocation(location: CLLocation)
}
class LocationHelper: NSObject, CLLocationManagerDelegate {
weak var locationManagerDelegate: LocationManagerDelegate?
var isLocationfetched: Bool = false
var lastKnownLocation: CLLocation? {
get {
let latitude = UserDefaults.standard.double(forKey: UserConstants.lastKnownLatitude)
let longitude = UserDefaults.standard.double(forKey: UserConstants.lastKnownLongitude)
if latitude.isZero || longitude.isZero {
return nil
}
return CLLocation(latitude: latitude, longitude: longitude)
}
set {
UserDefaults.standard.set(newValue?.coordinate.latitude ?? 0, forKey: UserConstants.lastKnownLatitude)
UserDefaults.standard.set(newValue?.coordinate.longitude ?? 0, forKey: UserConstants.lastKnownLongitude)
UserDefaults.standard.synchronize()
}
}
struct SharedInstance {
static let instance = LocationHelper()
}
class var shared: LocationHelper {
return SharedInstance.instance
}
enum Request {
case requestWhenInUseAuthorization
case requestAlwaysAuthorization
}
var clLocationManager = CLLocationManager()
func setAccuracy(clLocationAccuracy: CLLocationAccuracy) {
clLocationManager.desiredAccuracy = clLocationAccuracy
}
var isLocationEnable: Bool = false {
didSet {
if !isLocationEnable {
lastKnownLocation = nil
}
}
}
Locatie-updates met autorisatiecontrole
func startUpdatingLocation() {
isLocationfetched = false
if CLLocationManager.locationServicesEnabled() {
switch CLLocationManager.authorizationStatus() {
case .notDetermined:
clLocationManager.delegate = self
clLocationManager.requestWhenInUseAuthorization()
clLocationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation
clLocationManager.startUpdatingLocation()
isLocationEnable = true
case .restricted, .denied:
showLocationAccessAlert()
isLocationEnable = false
case .authorizedAlways, .authorizedWhenInUse:
self.clLocationManager.delegate = self
self.clLocationManager.startUpdatingLocation()
isLocationEnable = true
default:
print("Invalid AuthorizationStatus")
}
} else {
isLocationEnable = false
showLocationAccessAlert()
}
}
Locatiewaarschuwing weergeven als toestemming niet is toegestaan
func showLocationAccessAlert() {
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
UIApplication.shared.open(URL(string: UIApplication.openSettingsURLString)!)
})
let cancelAction = UIAlertAction(title: "cancel", style: UIAlertAction.Style.cancel)
alertController.addAction(cancelAction)
alertController.addAction(okAction)
let appdelegate = UIApplication.shared.delegate as? AppDelegate
appdelegate?.window?.rootViewController?.present(alertController, animated: true, completion: nil)
}
func stopUpdatingLocation() {
self.clLocationManager.stopUpdatingLocation()
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if !isLocationfetched {
isLocationfetched = true
clLocationManager.startMonitoringSignificantLocationChanges()
NotificationCenter.default.post(name: NSNotification.Name.updateLocationNotification, object: nil)
}
let userLocation = locations[0] as CLLocation
self.lastKnownLocation = userLocation
if let delegate = self.locationManagerDelegate {
delegate.getLocation!(location: userLocation)
}
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
if (status == CLAuthorizationStatus.denied) {
// The user denied authorization
isLocationEnable = false
} else if (status == CLAuthorizationStatus.authorizedWhenInUse) {
// The user accepted authorization
self.clLocationManager.delegate = self
self.clLocationManager.startUpdatingLocation()
isLocationEnable = true
}
}
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
print("\n error description for location updation:- \(error.localizedDescription)")
}
}
Voor het testen hierboven, schrijf deze regel code in je controller,
LocationHelper.shared.locationManagerDelegate = self
LocationHelper.shared.startUpdatingLocation()
LocationManagerDelegate-methoden
extension ViewController: LocationManagerDelegate {
func getLocation(location: CLLocation) {
currentLocation = location.coordinate
}
}
Antwoord 6, autoriteit 8%
Na veel onderzoek. Ik raad aan om dit bericht op een label weer te geven en niet in een waarschuwingsweergave. omdat er veel gevallen zijn om tegen te testen (gebruiker schakelt locatieservice in het algemeen uit of alleen voor app. app verwijderen, opnieuw installeren).
Een van deze gevallen zorgt ervoor dat uw waarschuwing tegelijkertijd uw bericht samen met het waarschuwingsbericht van Apple toont. uw waarschuwing bevindt zich achter de waarschuwing van Apple. wat een verwarrend en onlogisch gedrag is.
Ik raad het volgende aan:
Swift 3:
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
switch status {
case .notDetermined:
Log.verbose("User still thinking granting location access!")
manager.startUpdatingLocation() // this will access location automatically if user granted access manually. and will not show apple's request alert twice. (Tested)
break
case .denied:
Log.verbose("User denied location access request!!")
// show text on label
label.text = "To re-enable, please go to Settings and turn on Location Service for this app."
manager.stopUpdatingLocation()
loadingView.stopLoading()
break
case .authorizedWhenInUse:
// clear text
label.text = ""
manager.startUpdatingLocation() //Will update location immediately
break
case .authorizedAlways:
// clear text
label.text = ""
manager.startUpdatingLocation() //Will update location immediately
break
default:
break
}
}
Objective-c:
- (void)locationManager:(CLLocationManager*)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
switch (status) {
case kCLAuthorizationStatusNotDetermined: {
DDLogVerbose(@"User still thinking granting location access!");
[locationManager startUpdatingLocation]; // this will access location automatically if user granted access manually. and will not show apple's request alert twice. (Tested)
} break;
case kCLAuthorizationStatusDenied: {
DDLogVerbose(@"User denied location access request!!");
// show text on label
label.text = @"To re-enable, please go to Settings and turn on Location Service for this app.";
[locationManager stopUpdatingLocation];
[loadingView stopLoading];
} break;
case kCLAuthorizationStatusAuthorizedWhenInUse:
case kCLAuthorizationStatusAuthorizedAlways: {
// clear text
label.text = @"";
[locationManager startUpdatingLocation]; //Will update location immediately
} break;
default:
break;
}
}
Antwoord 7, Autoriteit 4%
de beste manier, omgaan met alle cases! – & GT;
//First, checking if the location services are enabled
if(![CLLocationManager locationServicesEnabled]){
[self showMessage:@"Please enable location services to detect location!" withTitle:@"Location not enabled"];
}
else if ([CLLocationManager authorizationStatus]==kCLAuthorizationStatusDenied){
//Now if the location is denied.
UIAlertController *alertController = [UIAlertController
alertControllerWithTitle:@"Enable location permission"
message:@"To auto detect location, please enable location services for this app"
preferredStyle:UIAlertControllerStyleAlert];
alertController.view.tintColor = AppColor;
UIAlertAction *cancelAction = [UIAlertAction
actionWithTitle:@"Dismiss"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction *action)
{
NSLog(@"Cancel action");
}];
UIAlertAction *goToSettings = [UIAlertAction
actionWithTitle:@"Settings"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *action)
{
//Simple way to open settings module
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:url];
}];
[alertController addAction:cancelAction];
[alertController addAction:goToSettings];
[self presentViewController:alertController animated:YES completion:^{
alertController.view.tintColor = AppColor;
}];
}
else{
//Do whatever you want here
}
Antwoord 8, Autoriteit 2%
SWIFT 3.0 & AMP; iOS 10 Oplossing:
self.locationManager?.requestWhenInUseAuthorization()
if CLLocationManager.locationServicesEnabled() && CLLocationManager.authorizationStatus() != CLAuthorizationStatus.denied {
locationManager?.delegate = self
locationManager?.desiredAccuracy = kCLLocationAccuracyBestForNavigation
locationManager?.distanceFilter = distanceFiler
locationManager?.startUpdatingLocation()
}else{
let alertView = UIAlertView(title: "Location Services Disabled!", message: "Please enable Location Based Services for better results! We promise to keep your location private", delegate: self, cancelButtonTitle: "Settings", otherButtonTitles: "Cancel")
alertView.delegate = self
alertView.show()
return
}
@objc(alertView:clickedButtonAtIndex:) func alertView(_ alertView: UIAlertView, clickedButtonAt buttonIndex: Int) {
if buttonIndex == 0 {
if let url = URL(string: "App-Prefs:root=LOCATION_SERVICES") {
UIApplication.shared.open(url, completionHandler: .none)
}
}
else if buttonIndex == 1 {
//TODO for cancel
}
}