I need to fetch the user current location for the WatchKit App in watchOS 2. How do I do this?
The other answers are incorrect. You can request location directly on the watch for watch OS2. The available method is called requestLocation. It allows you to request a single location update.
E.g.
#import <CoreLocation/CoreLocation.h>
#interface className : WKInterfaceController<CLLocationManagerDelegate>
Then where you want to request location:
self.locationManager = [CLLocationManager new];
self.locationManager.delegate = self;
[self.locationManager requestWhenInUseAuthorization];
[self.locationManager requestLocation];
Then you will get a single callback in one of the following CLLocationManagerDelegate methods.
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
// Callback here with single location if location succeeds
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
// Error here if no location can be found
}
See the WWDC15 video "What's New in Core Location" - https://developer.apple.com/videos/wwdc/2015/?id=714
Related
I've downloaded app for configuring beacons that I bought from Accent systems. It recognises beacon that is transmitting and I can easily configure it. I've used uuidgen tool to make some UUID for beacon and set it up in application. Let's say that this generated UUID is "XXX-XXX" (I know that it's longer and that it's HEX value). So, how it's set in my beacon is following:
UUID: XXX-XXX
Major : 1111
Minor : 0001
That same UUID I used in my code. I've set my View Controller to CLLocationManagerDelegate and in viewDidLoad method I have following code:
NSUUID *myUUID = [[NSUUID alloc] initWithUUIDString:#"XXX-XXX"];
CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:myUUID
identifier:#"Company"];
CLLocationManager *locManager = [[CLLocationManager alloc] init];
[locManager setDelegate:self];
[locManager startRangingBeaconsInRegion:region];
I've also set following methods in that view controller, but they never get called:
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
- (void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons
inRegion:(CLBeaconRegion *)region
I'm testing this on Ipad Air and bluetooth is ON.
Why do that never get called? What am I doing wrong?
You need to ask for location permission in iOS 8, and also added a the usage description string in your plist file.
Check out this answer for more detail: https://stackoverflow.com/a/24063578/361247
I have a app which collects location data in foreground and background. To save battery i want to use the allowDeferredLocationUpdatesUntilTraveled property as explained in Apple Doc
From the documents, allowDeferredLocationUpdatesUntilTraveled gets set(based on time and distance) in foreground. Once app goes in the background we won't receive regular location updates instead we receive them based on the allowDeferredLocationUpdatesUntilTraveled.
I have implemented following code but the deferring does not get called in the background.
#pragma mark - Location Manager
-(void) setLocationManager
{
locationManager = [[CLLocationManager alloc] init];
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.delegate = self;
[locationManager startUpdatingLocation];
}
-(void) locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
NSLog(#"didUpdateLocations");
if (!deferringUpdates)
{
CLLocationDistance distance = 200;
NSTimeInterval time = 60;
[locationManager allowDeferredLocationUpdatesUntilTraveled:distance timeout:time];
deferringUpdates = YES;
}
}
-(void)locationManager:(CLLocationManager *)manager didFinishDeferredUpdatesWithError:(NSError *)error
{
NSLog(#"didFinishDeferredUpdatesWithError");
}
SetLocationManager gets called in the foreground and works fine. Once app goes in the background i still receive regular location updates rather than allowDeferredLocationUpdatesUntilTraveled.
I have also set the following values in the info.plist file
Background Fetch
Background Location Updates
Device Capabilities - location service
Anyone luck with implementing this?
You need to set deferringUpdates back to NO within didFinishDeferredUpdatesWithError : as per Apple documentation, the "delegate’s locationManager:didFinishDeferredUpdatesWithError: method is called exactly once for each time you call (allowDeferredLocationUpdatesUntilTraveled)".
Thus allowDeferredLocationUpdatesUntilTraveled is only called once until deferringUpdates is NO.
Here we have to update the current location by using the location manager,and its correctly updating on simulator but its not updating on device only 4 or 5 times only repeated.why the location is not updated frequently kindly hep me to solve this problem
Here i used code is showed below
CLLocationManager *locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
[locationManager startUpdatingLocation];
Delegate Method:
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation: (CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
NSLog(#"newLocation: %#",newLocation);
}
This is the delegate method is calling four or five times.
If you are using location accuracy as 'kCLLocationAccuracyBestForNavigation', your device should remain plugged in.
Better you set it as 'kCLLocationAccuracyBest'. Also move to significant distance to hit the delegate. initially it will hit 4-5 times to locate you. Once your location is identified, it will call the delegate when there will be change in your location.
So, in delegate write something in file stored in documents directory in append mode. log the lat/long and Time details into it. Now move for some distance.
Join the mobile and get the file from documents directory. It must have logg the required details.
Here i solved this problem using this delegate method
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations{
}
I'm trying to get heading info from CLLocationManager but it's not getting called. I did everything as the documentation says, but something is very wrong.
I'm using locationManager delegating into my app delegate.
Here is the method to retrieve heading messages:
- (void) locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading
{
NSLog(#"%#", newHeading);
}
Here is the part from main()
locationManager = [[CLLocationManager alloc] init];
[locationManager setDelegate:self];
[locationManager startUpdatingHeading];
But nothing happens! With debugging, NSLog is never getting called.
When I do same with [locationManager startUpdatingLocation] everything works fine, shows the location info, using another method (very same looking but using
- (void) locationManager:(CLLocationManager *) manager
didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
but I need heading info here.
Found the deal.
Code is perfectly fine, the issue is in Iphone simulator.
Somehow it is providing location info just fine, but heading info is not provided thus the message is never sent.
Talk about weird things, apple.
This tutorial on mobileorchard.com uses 2 classes (or 2 sets of .h and .m) to implement core location. Can I just use everything there in my existing class? How would I do that?
Can I use my existing app delegate as a location delegate as well?
Also, is the
- (id) init {
self = [super init];
if (self != nil) {
self.locationManager = [[[CLLocationManager alloc] init] autorelease];
self.locationManager.delegate = self; // send loc updates to myself
}
return self;
}
method the same as the usual initWithNib?
I'm trying to quickly implement something based on location information. As much help describing the above linked tutorial would be helpful.
Thanks. No - really, Thank You.
Yes, sure. You can make your delegate a location manager delegate too. You'll just need to implement CLLocationManagerDelegate there with the method:
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
to get location updates.