How to stop updating location once I get current location?

问题

I'm using Parse and with geoPointForCurrentLocationInBackground I can stop updating once a location is received without having to manually stop it.

How do I stop updating location immediately right after I receive location using CLLocationManager?

Edit

I know [self.locationManager stopUpdatingLocation]; stops it. What I'm really asking is, how do I know I've received location for the first time then stop it immediately?

回答1:

After getting your location, use this method:

[self.locationManager stopUpdatingLocation];
self.locationManager = nil;

回答2:

Call stopUpdatingLocation as soon as your didUpdateLocations method is called.

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
    [manager stopUpdatingLocation];
    //store your location
    self.location = [locations lastObject];
}

回答3:

BOOL first_time = YES; // public

Every time you start updating location set first_time to YES:

first_time = YES; 
[self.locationManager startUpdatingLocation];

in your didUpdateUserLocation method:

if (userLocation == nil) {
    NSLog(@"User location is nil. maybe wating for permission");

} else if (!CLLocationCoordinate2DIsValid(userLocation.coordinate)) {
    NSLog(@"User location is not valid 2d coordinates. maybe called in background");
} else {
    NSLog(@"Did update user location: %f %f", userLocation.location.coordinate.latitude, userLocation.location.coordinate.longitude);

    // here is the first time you receive user location
    if (first_time)
    {
        first_time = NO;
        [self.locationManager stopUpdatingLocation];
    }
}

回答4:

The opposite of stopMonitoringSignificantLocationChanges is not stopUpdatingLocation, it is startMonitoringSignificantLocationChanges.

Check out the CLLocation documentation for further detail.

回答5:

call below method to save and stop location after you get it once

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {    
    self.location = [locations lastObject]
    self.locationManager.delegate = nil;
    [self.locationManager stopUpdatingLocation];
}

回答6:

Finally found the answer in another question...reprinting it here because it took me a while to stumble on it.

I had to call this:

[_locationManager stopMonitoringSignificantLocationChanges];

Even though I never called startMonitoringSignificantLocationChanges in the first place, seems I had to "un-call" it...strange that it works this way, but as soon as I added that line, location services shut down promptly. Hope this helps someone else.

回答7:

Once current location update stop location manager using stopUpdatingLocation.

region.center = self.mapView.userLocation.coordinate;
if (region.center.longitude != 0 && region.center.latitude != 0) {
    [self.locationManager stopUpdatingLocation];
}

回答8:

 self.yourLocationManager.stopUpdatingLocation()

来源：https://stackoverflow.com/questions/31916504/how-to-stop-updating-location-once-i-get-current-location

标签

ios

objective-c

parse-platform

cllocationmanager