I recently asked this question, not knowing of the changes made to CL in iOS 9. I am trying to store the user's current location and I have changed my code to reflect the new delegate methods in iOS 9, but didUpdateLocations is still never reached.
Here is the link to my original question: Latitude & Longitude Not Retrieved
And my updated code:
viewWillAppear
- (void)viewWillAppear:(BOOL)animated{
manager = [[CLLocationManager alloc] init];
manager.delegate = self;
if ([manager respondsToSelector:#selector(requestWhenInUseAuthorization)]) {
[manager requestWhenInUseAuthorization];
}
[manager startUpdatingLocation];
}
didUpdateLocations
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray<CLLocation *> *)locations{
NSLog(#"Location: %#", locations);
CLLocation *currentLocation = locations.lastObject;
if (currentLocation != nil) {
float latitude = currentLocation.coordinate.latitude;
float longitude = currentLocation.coordinate.longitude;
NSLog(#"dLongitude : %f", longitude);
NSLog(#"dLatitude : %f", latitude);
}
else{ NSLog(#"ERROR");
}
}
check for
authorizationStatus and startUpdatingLocation
and
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
you can also go to settings ->privacy -> location services (turn on) -> select ur app and select while using.
Related
UPDATED for iOS9: I am new to iOS, experimenting with CoreLocation to return latitude and longitude values. The following code never executes the log output
-(void)viewWillAppear:(BOOL)animated{
manager = [[CLLocationManager alloc]init];
manager.delegate = self;
manager.desiredAccuracy = kCLLocationAccuracyBest;
[manager startUpdatingLocation];
}
Here is my didUpdateToLocation function with is never reached
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray<CLLocation *> *)locations{
NSLog(#"Location: %#", locations);
CLLocation *currentLocation = locations.lastObject;
if (currentLocation != nil) {
float latitude = currentLocation.coordinate.latitude;
float longitude = currentLocation.coordinate.longitude;
NSLog(#"dLongitude : %f", longitude);
NSLog(#"dLatitude : %f", latitude);
}
else{ NSLog(#"ERROR");
}
}
CLLocationManager is asynchronous, You should get the latitude and longitude in the delegate method.
locationManager.delegate = self;
Then implement this delegate method:
- locationManager:didUpdateLocations:
1.first of all, you should use you should use a actual device instead of a simulator
2.implement CLLocationManagerDelegate in the interface,like
#interface XXXXX () <CLLocationManagerDelegate>
3.after
locationManager = [[CLLocationManager alloc] init];
add
locationManager.delegate = self;
4.implement the delegate method
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
for (CLLocation *location in locations) {
//you can get locations here
}
}
I have been trying to fake my location in the iOS simulator but the methods I have been reading about are not working. I have used the debugger to set my fake location, and have made a custom location in Debug->Location->Custom Location, yet I still log 0.000 0.000 for lat and long.
I'm using this code to find current location.
- (IBAction)currentLocationButtonPressed:(UIButton *)sender
{
//Search for pubs and bars in current location.
//Push to tableViewController
NSLog(#"current location Pressed.");
locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
locationManager.desiredAccuracy = kCLLocationAccuracyBest; // Best accuracy
[locationManager startUpdatingLocation];
NSLog(#"%#",[self deviceLocation]);
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(#"didUpdateToLocation: %#", newLocation);
CLLocation *currentLocation = newLocation;
if (currentLocation != nil) {
NSLog(#"Latitude: %f Longitude: %f", currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
}
}
- (NSString *)deviceLocation {
return [NSString stringWithFormat:#"latitude: %f longitude: %f", locationManager.location.coordinate.latitude, locationManager.location.coordinate.longitude];
}
The delegate is set and I am requesting authorization.
- (void)viewDidLoad {
[super viewDidLoad];
searchLocationTextField.delegate = self;
locationManager.delegate = self;
locationManager = [[CLLocationManager alloc]init];
[locationManager requestWhenInUseAuthorization]; // For foreground access
[locationManager requestAlwaysAuthorization]; // For background access
}
Set locationManager delegate to after allocating it.
locationManager = [[CLLocationManager alloc]init];
locationManager.delegate = self;
locationManager:didUpdateToLocation:fromLocation: delegate method is deprecated, use locationManager:didUpdateLocations: instead.
-(void) locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CLLocation *currentLocation = [locations lastObject];
NSLog(#"Latitude: %f Longitude: %f", currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
}
I am using CLLocationManger to get device current location. All is going well on simulation. I check the "Allow Location Simulation" and set Sydney, Australia as default location. I got the lat and long of Sydney on simulator that is fine
My problem is that when i try on device I still get the Sydney location however my device current location is India.
My device get the location what ever I set in Xcode.
Here is my code:
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.distanceFilter = 1;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
#pragma mark delegate method which tell the current location
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
latitudeCurrentLocation = [NSString stringWithFormat:#"%f",newLocation.coordinate.latitude];
longitudeCurrentLocation= [NSString stringWithFormat:#"%f",newLocation.coordinate.longitude];
[locationManager stopUpdatingLocation];
locationManager=nil;
NSLog(#"OldLocation %f %f", oldLocation.coordinate.latitude, oldLocation.coordinate.longitude);
}
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
}
Please suggest what should I should do.
Use this delegate method and check your location address
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations
Here is sample code :
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
[geocoder reverseGeocodeLocation:_locationManager.location
completionHandler:^(NSArray *placemarks, NSError *error) {
NSLog(#"reverseGeocodeLocation:completionHandler: Completion Handler called!");
if (error){
NSLog(#"Geocode failed with error: %#", error);
return;
}
NSLog(#"placemarks=%#",placemarks);
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(#"placemark.ISOcountryCode =%#",placemark.ISOcountryCode);
NSLog(#"placemark.country =%#",placemark.country);
NSLog(#"placemark.postalCode =%#",placemark.postalCode);
NSLog(#"placemark.administrativeArea =%#",placemark.administrativeArea);
NSLog(#"placemark.locality =%#",placemark.locality);
NSLog(#"placemark.subLocality =%#",placemark.subLocality);
NSLog(#"placemark.subThoroughfare =%#",placemark.subThoroughfare);
NSLog(#"stringlocation:%#",_cityString);
}];
_userLocation = [locations lastObject]; // This will give you co-ordinates
[_locationManager stopUpdatingLocation];
}
When you run this in your device select don't simulate location
Since I have updated my ios to 7.I dont know how get the current location and altitude with the new method
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
Can Any one show me some sample code how to use this method to get current location and altitude?
Thanks a LOT.
The most recent location will be at the end of the locations array.
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CLLocation *mostRecentLocation = [locations lastObject];
bool haveValidAltitude = (mostRecentLocation.verticalAccuracy > 0);
if(haveValidAltitude)
{
NSLog(#"current altitude is: %g meters above sea level", mostRecentLocation.altitude);
}else{
NSLog(#"current altitude is unavailable");
}
}
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CLLocation *location = [locations lastObject];
NSLog(#"latitude %+.6f, longitude %+.6f\n", location.coordinate.latitude, location.coordinate.longitude);
}
locations is an array, last object of which is the newest available location.
I want to get users current location(lat,long) on the app launch only..i dont want to use delegate method for frequent location updates..I m not using maps just need current location on launch..how should i do this??
I am using the code below but its not working.
CLLocationManager *locationManager;
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate=self;
locationManager.desiredAccuracy=kCLLocationAccuracyBest;
locationManager.distanceFilter=kCLDistanceFilterNone;
[locationManager startUpdatingLocation];
CLLocation *location;
location = [locationManager location];
CLLocationCoordinate2D coord;
coord.longitude = location.coordinate.longitude;
coord.latitude = location.coordinate.latitude;
NSLog(#"latitude %f longitude %f",coord.latitude,coord.longitude);
Output:-
latitude 0.000000 longitude 0.000000
please help..
better you use the delegate method to get user location and in didupdateLocation method stop it
I think this url may help you
iPhone SDK: Track users location using GPS
and in
-(void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation{
CLLocationCoordinate2D here = newLocation.coordinate;
NSLog(#"%f %f ", here.latitude, here.longitude);
[locationManager stopUpdatingLocation];
}
and you done with it...
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
// NSLog(#"didUpdateToLocation: %#", newLocation);
CLLocation *currentLocation = newLocation;
// Reverse Geocoding
// NSLog(#"Resolving the Address");
[geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
// NSLog(#"Found placemarks: %#, error: %#", placemarks, error);
if (error == nil && [placemarks count] > 0) {
placemark = [placemarks lastObject];
[locationManager stopUpdatingLocation];
} else {
NSLog(#"%#", error.debugDescription);
}
} ];
}
Use CLLocationManagerDelegate method
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
[_locationManager stopUpdatingLocation];
NSLog(#"latitude %f longitude %f",newLocation.coordinate.latitude,,newLocation.coordinate.longitude);
}
Above method is deprecated in iOS6, use locationManager:didUpdateLocations: instead
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations
import <CoreLocation/CoreLocation.h>
delegate: CLLocationManagerDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// System alert for Allowing current location of user.
// Location manager object creation.
locationManager = [[CLLocationManager alloc] init];`enter code here`
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
}
// iOS >= 6.0.
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
[locationManager stopUpdatingLocation];
}
// iOS < 6.0
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
[locationManager stopUpdatingLocation];
}