My location manager is not updating my coordinates of current locations so that i cant able to trace that address.......
I am using the following code,
- (void)viewDidLoad
{
[super viewDidLoad];
locationManager = [[CLLocationManager alloc] init];
//locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.delegate = self;
[locationManager startUpdatingLocation];
// startLocation = nil;
[super viewDidLoad];
}
-(void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
NSLog(#"Latitude:%f Longitude:%f", newLocation.coordinate.latitude, newLocation.coordinate.longitude);
geocoder =[[[MKReverseGeocoder alloc] initWithCoordinate:newLocation.coordinate]autorelease];
geocoder.delegate=self;
[geocoder start];
}
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(#"%#Error",[error description]);
}
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark{
NSString *street=[placemark.addressDictionary objectForKey:#"Street"];
NSLog(#"%#",street);
}
It shows the error report
Error Domain=kCLErrorDomain Code=0 "The operation couldnft be completed. (kCLErrorDomain error 0.)"Error
How to overcome this?.
Related
I had an application in which i need to call a service whenever the specified location change occurs.I had initiating the location controller in my delegate class, like this
locationController = [[UILocation alloc] init];
locationController.delegate = self;
locationController.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationController.locationManager.distanceFilter = 1000.0;
[locationController.locationManager startUpdatingLocation];
But as everybody knows Accuracybest will call the didupdate methode multiple times in an inconsistent manner. so how can i call my service from the delegate methode only once?Can anybody point me how to achieve this?
-(void)postCurrentLocationOfDevice
{
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.distanceFilter = kCLDistanceFilterNone;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[self.locationManager startUpdatingLocation];
self.locationManager.delegate = self;
}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CURRENT_LOCATION = [locations objectAtIndex:0];
[self.locationManager stopUpdatingLocation];
}
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
CURRENT_LOCATION = newLocation;
[self.locationManager stopUpdatingLocation];
}
-(void) locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
[manager stopUpdatingLocation];
}
It will stop location update when first location update occur.
I am calling CLLocationManager and it's calling its delegate method as well. But my problem is, isn't updating its New Location after traveling 1 km.
Here's my code:
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationTimer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:#selector(updateLocation1:) userInfo:nil repeats:YES];
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
// Method did update location - Update location when location change
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
// this method is calling after every 1 sec interval time..
}
-(void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
// this method is not calling once also after travelling around a km ....
}
What am I doing wrong?
You should be calling startUpdatingLocation or startMonitoringSignificantLocationChanges on the location manager for it to start checking for location changes and calling your delegate methods.
locationManager:didUpdateToLocation:fromLocation: is deprecated so you can expect it not to always be used.
If locationManager:didUpdateLocations: is being called then you are receiving location updates.
- (void)viewDidLoad
{
CLLocationManager *locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.distanceFilter = kCLLocationAccuracyKilometer;
[locationManager startUpdatingLocation];
CLLocation *location = [locationManager location];
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
//[manager stopUpdatingLocation];
CLLocationCoordinate2D coordinate_currentlocation = [newLocation coordinate];
float latitude_current = newLocation.coordinate.latitude;
float longitude_current = newLocation.coordinate.longitude;
}
Your first method
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
// this method is calling after every 1 sec interval time..
}
is used since iOS 6.
The second one is deprecated since iOS 6 and was used prior to iOS 6. You can use both methods, depending on the system version on the device your app is running at, by adding a helper method.
- (void) locationManager:(CLLocationManager *) manager didUpdateToLocation:(CLLocation *) newLocation fromLocation:(CLLocation *) oldLocation
{
[self locationManager:manager helperForLocation:newLocation];
}
- (void) locationManager:(CLLocationManager *) manager didUpdateLocations:(NSArray *) locations
{
if([locations count] > 0)
{
[self locationManager:manager helperForLocation:[locations objectAtIndex:[locations count] - 1]];
}
}
- (void) locationManager:(CLLocationManager *) manager helperForLocation:(CLLocation *) newLocation
{
// your code what to do with location goes here
}
The locations retrieved by iOS 6 are wrapped in a list and could be more than 1. In my example I take the last one and put it to my helper.
i have done this within my app with the use of this
myLocationManager = [[CLLocationManager alloc] init];
myLocationManager.delegate = self;
myLocationManager.desiredAccuracy = kCLLocationAccuracyBest;
[myLocationManager startUpdatingLocation];
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(#"didFailWithError: %#", error);
UIAlertView *errorAlert = [[UIAlertView alloc]
initWithTitle:#"Error" message:#"Failed to Get Your Location, Please turn on GPS and Restart The Application"delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[errorAlert show];
[errorAlert release];
}
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
CLLocation *currentLocation = newLocation;
if (currentLocation != nil) {
[NSString stringWithFormat:#"%.8f", currentLocation.coordinate.longitude];
[NSString stringWithFormat:#"%.8f", currentLocation.coordinate.latitude];
}
// Stop Location Manager
[myLocationManager stopUpdatingLocation];
}
-(void)postCurrentLocationOfDevice
{
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.distanceFilter = kCLDistanceFilterNone;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[self.locationManager startUpdatingLocation];
self.locationManager.delegate = self;
}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CURRENT_LOCATION = [locations objectAtIndex:0];
[self.locationManager stopUpdatingLocation];
}
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
CURRENT_LOCATION = newLocation;
[self.locationManager stopUpdatingLocation];
}
Hey guys,
I'm trying to call the update method but its not working, any idea?
#import "TrackerViewController.h"
#implementation TrackerViewController
-(IBAction)updateButton:(id)sender{
[self update];
}
-(void)update{
locmanager = [[CLLocationManager alloc] init];
[locmanager setDelegate:self];
[locmanager setDesiredAccuracy:kCLLocationAccuracyBest];
[locmanager startUpdatingLocation];
}
-(void)viewDidLoad {
[self update];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
CLLocationCoordinate2D loc = [newLocation coordinate];
latitude.text = [NSString stringWithFormat: #"%f", loc.latitude];
longtitude.text = [NSString stringWithFormat: #"%f", loc.longitude];
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
}
The didUpdateToLocation will be called when an location changes.
I guess you are testing it in simulator and on simulator no change occurs in location so the method don't called.
Suggesstion You should implement other delegate methods to check whats happening; in case if there is some error. For example: locationManager:didFailWithError:
Below is my code but its not working. Can anyone help me???
- (void)viewDidLoad {
[super viewDidLoad];
CLController = [[CoreLocationController alloc] init];
CLController.delegate = self;
//[CLController setDesiredAccuracy:kCLLocationAccuracyBest];
[CLController.locMgr startUpdatingLocation];
}
- (void)locationUpdate:(CLLocation *)location {
locLabel.text = [location description];
}
- (void)locationError:(NSError *)error {
locLabel.text = [error description];
}
You aren't doing the CLocationManager delegate methods properly
(void)locationUpdate:(CLLocation *)location {
locLabel.text = [location description];
}
Should be
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
locLabel.text = [newLocation description];
}
You should read Apple's documentation http://developer.apple.com/library/ios/#documentation/CoreLocation/Reference/CLLocationManagerDelegate_Protocol/CLLocationManagerDelegate/CLLocationManagerDelegate.html%23//apple_ref/doc/uid/TP40007124 about this thoroughly before implementing it.
i'm try to retreiving city name with cllocation and mkreversegeocoder.
in my viewdidload method i istance cllocationmanager:
self.locManager = [[CLLocationManager alloc] init];
locManager.delegate = self;
locManager.desiredAccuracy = kCLLocationAccuracyBest;
[locManager startUpdatingLocation];
and after:
- (void) locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation
*)newLocation
fromLocation:(CLLocation *)oldLocation {
//some code to retrieve my information
MKReverseGeocoder *geoCoder = [[MKReverseGeocoder alloc]
initWithCoordinate:newLocation.coordinate ];
geoCoder.delegate = self;
[geoCoder start];
}
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark
*)placemark
{
MKPlacemark *myPlacemark = placemark;
citta.text = [placemark locality];
}
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error{
citta.text =# "Unknow";
Application works only the first time i get my value. on the second time app crash.
I think is because geocoder is started and i think i must have one and only one istance running. (but i'm really not shure of this...). in which way i can controll geocoder is running?
I've see that i can istance mkreversegeocoder in my viewdidload using cllocationcoordinate2d but ... in which way i can retreive newlocation.coordinate?
I've partially resolve declaring geocoder as class variable and checking
if (self.geocoder != nil) {
[geocoder release];
}
but.... if in my
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark
*)placemark
or in my
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailedWithError:(#NSError
*)error
i release or cancel my object?
I'm feeling so stupid :D
Don't create the reverse geocoder as a local variable.
Look at the MKReverseGeocoder example in the CurrentAddress sample app provided by Apple. See MapViewController.h and MapViewController.m.
Follow the same pattern in your code.