I am getting user location from this method
/*Region and Zoom*/
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta=0.2;
span.longitudeDelta=0.2;
CLLocation *location1 = [locationManager location];
CLLocationCoordinate2D location = [location1 coordinate];
location.latitude = location.latitude;
location.longitude = location.longitude;
region.span=span;
region.center = location;
/*Geocoder Stuff*/
MKReverseGeocoder *geoCoder=[[MKReverseGeocoder alloc] initWithCoordinate:location];
geoCoder.delegate = self;
[geoCoder start];
mapView.showsUserLocation = TRUE;
[mapView setRegion:region animated:TRUE];
[mapView regionThatFits:region];
This works perfectly but when I try to run this code in simulator then it gets crashed at the point of [mapView setRegion:region animated:TRUE]; this tells it doesn't get the latitude and longitude values. So how can I make this code run in simulator perfectly.
I have to make this code run in simulator, is it possible?
On iOS5 Simulator by default you it will show some location in USA. If you want to change that location, in iOS Simulator menu, go to Debug -> Location -> Custom Location.
There you can set the latitude and longitude and test the app accordingly. This works with mapkit and also with CLLocationManager.
try this path-
Go to product->Edit Scheme->Options->select Allow Location simulation
it won't be your exact location! But at least you can verify your code is working.
Related
I have an MKMapView, and I'm trying to set the map, so that when you first load the application it goes to a user set location, and if the user hasn't set one, to a default one. The problem is that it always seems to go to 0 latitude, 0 longitude.
-(void) viewDidLoad {
[worldView setShowsUserLocation:YES];
double longitude = [[NSUserDefaults standardUserDefaults] doubleForKey:WhereamiNewLongPrefKey];
double latitude = [[NSUserDefaults standardUserDefaults] doubleForKey:WhereamiNewLatPrefKey];
CLLocationCoordinate2D savedLoc = CLLocationCoordinate2DMake(latitude, longitude);
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(savedLoc, 250, 250);
NSLog(#"latitude :%f", region.center.latitude);
NSLog(#"longitude :%f", region.center.longitude);
[worldView setRegion:region animated:YES];
}
I've tried setting setShowUserLocation to NO, but that doesn't work. I know it's reading the correct region, because the NSLog is outputing the default latitude, but the map insists on going to somewhere in China...
I've also tried setting the region in mapView:didUpdateUserLocation:, but still the same result.
What am I doing wrong?
EDIT: I added the NSLog to output the longitude as well. The output is:
2012-11-14 09:50:30.699 Whereami[34256:13d03] latitude :20.516700
2012-11-14 09:50:30.699 Whereami[34256:13d03] longitude :99.900000
CLLocationCoordinate2D theCoordinate;
theCoordinate.latitude = 20.516700;
theCoordinate.longitude = 99.900000;
MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(theCoordinate, 1000, 1000);
MKCoordinateRegion adjustedRegion = [self.mapView regionThatFits:viewRegion];
[self.mapView setRegion:adjustedRegion animated:YES];
I added a MKAnnotation delegate handler class into a MKMapView like this.
MapAnnotation *anAnnotation = [[[MapAnnotation alloc] initWithCoordinate:coord] autorelease];
[myMapView addAnnotation:anAnnotation];
The MapAnnotation implements the MKAnnotation.
However didAddAnnotationViews doesnt get called always. Sometimes (rarely) it does and sometimes its not. I checked few places and I have used this correctly. Does it depends on span attributes as well?
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta=0.005f;
span.longitudeDelta=0.005f;
CLLocationCoordinate2D location;
location.latitude = searchLocation.coordinate.latitude;
location.longitude = searchLocation.coordinate.longitude;
region.span=span;
region.center=location;
[myMapView setRegion:region animated:TRUE];
[myMapView regionThatFits:region];
Whats wrong with this code?
This delegate method is called for annotations that are currently visible i.e. those that are within the map region that is currently displayed on the screen.
I have this code to set the map at the user's location:
MKCoordinateSpan span;
span.latitudeDelta=0.2;
span.longitudeDelta=0.2;
CLLocationCoordinate2D location=mapView.userLocation.coordinate;
location = mapView.userLocation.location.coordinate;
MKCoordinateRegion region;
region.span=span;
region.center=location;
[mapView setRegion:region animated:TRUE];
[mapView regionThatFits:region];
Now when I do mapView.showsUserLocation=YES it shows my location at the right place (on my device, and the apple hq in the simulator) however, both times the code above puts me in the sea somewhere near africa!
Any ideas?
The latitude/longitude pair 0/0 is on the equator due south of Greenwich, England. That spot is in the Gulf of Guinea, off the West coast of Africa. If that's where your pin is getting placed, then your mapView.userLocation isn't getting set.
Probably your code here is running before MKMapKit has had a chance to get its location. What you really want to do is have your viewController adopt the MKMapKitDelegate protocol, set the .delegate property of your map view to self, and then implement the method:
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
That method will get called when the map kit locates the user, and you can use the userLocation value you get passed there to set the region on the map. Until that gets called the first time, though, the MapView is still working on locating itself, and your asking about its location is premature.
Also, your regionThatFits there at the end is a no-op. That method doesn't resize the region in place, it actually returns a resized region, for you to use however you will. So you want to set your map view's region to what that method returns. Like this:
[mapView setRegion:[mapView regionThatFits:region] animated:TRUE];
What I have done was add the following entry on info.plist:
NSLocationAlwaysUsageDescription
Got this info into this (very good) tutorial:
https://www.youtube.com/watch?v=Z272SMC9zuQ
You can choose this method..
- (void)mapView:(MKMapView *)_mapView regionDidChangeAnimated:(BOOL)animated{
CLGeocoder *ceo = [[CLGeocoder alloc]init];
CLLocation *loc = [[CLLocation alloc]initWithLatitude:_mapView.region.center.latitude longitude:_mapView.region.center.longitude];
CLLocationAccuracy accuracy = _mapView.userLocation.location.horizontalAccuracy;
if (accuracy) {
current_pickup_location = loc;
[_currentStreetSpinner startAnimating];
[ceo reverseGeocodeLocation:loc
completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error){
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSString *locatedAt = [[placemark.addressDictionary valueForKey:#"FormattedAddressLines"] componentsJoinedByString:#", "];
// NSLog(#"location %#",placemark.location);
NSLog(#"I am currently at %#",locatedAt);
_currentStreetLabel.text = locatedAt;
static_iVar = _currentStreetLabel.text;
[_currentStreetSpinner stopAnimating];
[self listDoctorsWithSpeciality_id:currentSpeciality_id
withProfessionalityId:currentProfessionality_id];
}];
}
}
I am answering this question because the answer picked did not really help me and I was having the exact same issue. didUpdateUserLocation is not very practical because it makes the app update every single time the location changes. The other issue with the above solution is that when the map loads it's still too early to ask for a location. So how do you ask for user location before the the map loads so that the zooming doesn't take you to Africa?
You need to request the location by using the location manager on the viewDidLoad. Then after that you can set the region.
SWIFT 3
//top of your class
let locManger = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
//request user location
locManager.startUpdatingLocation()
//this is the code that sets the region based on the location
let span = MKCoordinateSpanMake(0.5, 0.5)
let location = CLLocationCoordinate2DMake((locManager.location?.coordinate.latitude)!, (locManager.location?.coordinate.longitude)!)
let region = MKCoordinateRegionMake(location, span)
yourMap.setRegion(region, animated: false)
//stop location updating
locManager.stopUpdatingLocation()
}
I am just looking at mapKit and decided to make a quick button to display my current location, however when I press the button my latitude/longitude always display as [0.000000] [0.000000].
The mapView is loaded as I can see the map on the simulator before I press the button. Previously I have done this by using coreLocation.framework and using CLLocationManager and asking for the device location that way. I am just curious why this way is not working correctly, would I be better doing this via CLLocationManager?
-(IBAction)findMePressed {
MKUserLocation *myLocation = [myMapView userLocation];
CLLocationCoordinate2D coord = [[myLocation location] coordinate];
[myMapView setCenterCoordinate:coord animated:YES];
NSLog(#"findMePressed ...[%f][%f]", coord.latitude, coord.longitude);
}
EDIT: Added ...
-(IBAction)findMePressed {
MKUserLocation *myLocation = [myMapView userLocation];
CLLocationCoordinate2D coord = [[myLocation location] coordinate];
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(coord, 350, 350);
[myMapView setRegion:region animated:YES];
}
-(void)viewDidLoad {
[super viewDidLoad];
[myMapView setShowsUserLocation:YES];
}
Gary.
Either the userLocation is not visible on the map (see the userLocationVisible property) or there is some problem setting up the myMapView property and it's nil (i.e. not connected in interface builder)
[...] as I can see the map on the simulator [...]
Test it on the device. By default, on the simulator, the coordinates you get back are Apple's headquarters. Cf. doc.
See this other SO question for workarounds and useful utilities : Testing CoreLocation on iPhone Simulator
For demonstration purpose, i need to simulate the user location in a Mapkit view.
It seems that it is possible with an undocumented API to place the blue dot anywhere on the map view.
Unfortunately, i don't know witch undocumented API to use ?
Any help ?
Did you set this?
mapView.showsUserLocation = YES;
Setting a specific location is a bit more difficult, but certainly do-able without undocumented APIs. See code below:
- (void)animateToSelectedPlace:(CGFloat)zoomLevel {
MKCoordinateRegion region;
region.center = [self getCoordinateFromComponents:chosenLatitude:chosenLongitude];
MKCoordinateSpan span = {zoomLevel,zoomLevel};
region.span = span;
[mapView setRegion:region animated:YES];
}
-(CLLocationCoordinate2D)getCoordinateFromComponents:(NSNumber*)latitude:(NSNumber*)longitude {
CLLocationCoordinate2D coord;
coord.latitude = latitude.doubleValue;
coord.longitude = longitude.doubleValue;
return coord;
}
Not sure that it is possible to set CUSTOM user location (usually people use image simulating blue user point). Though i am not 100% sure, so you have a chance to try something like this to check if it is possible to deal with userLocation as with MKAnnotation ...
CLLocationCoordinate2D c = self.mapView.userLocation.location.coordinate;
[[self.mapView userLocation] setCoordinate:c];