I'm trying to get my current location to zoom in automatic in mkmapview, but i can't get it to work.
here´s a bit of code, that i want is to zoom automatic like in Runkeeper.
**the h-file**
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
#interface WalkingTableViewController: UIViewController <MKMapViewDelegate>
#property ( strong, nonatomic) MKMapView *mapView;
#end
**the m-file**
#import "WalkingTableViewController.h"
#interface WalkingTableViewController ()
#end
#implementation WalkingTableViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.mapView.showsUserLocation=YES;
self.mapView.delegate = self;
[self.mapView setUserTrackingMode:MKUserTrackingModeFollow animated:YES];
// zoom in on users location (?)
}
#end
You need to set the region, something like:
MKCoordinateRegion region;
region = MKCoordinateRegionMakeWithDistance(_mapView.userLocation.coordinate,10000,10000);
[_mapView setRegion:region animated:YES];
The 10000 is the distance from your center point you want to see in your map.
This should work like a charm
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(your_lat, yout_longitude, 1000.0, 1000.0);
region.span.latitudeDelta = MAX(region.span.latitudeDelta, (coord.latitude - coord.latitude) * 1.05);
region.span.longitudeDelta = MAX(region.span.longitudeDelta, (coord.longitude + coord.longitude) * 1.05);
mapView.region = region;
Related
I am trying to display some icons on a MKMapView. I have achieved that by using this code:
MapPoint *placeObject = [[MapPoint alloc] initWithName:place.name
address:place.address
coordinate:place.location.coordinate
image:place.customMapPinImage
icon:place.icon
bookmark:place.bookmark
contents_ID:place.contents_ID
contents_lang_MAIN_ID:place.contents_lang_MAIN_ID
contents_lang_ID_ML:place.contents_lang_ID_ML];
[mapView addAnnotation:placeObject];
The problem is that, without changing anything in the code, the size of the icons changed and I don't know why. How can I adjust the size of the icons?
You need to write class annotations
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface Annotation : NSObject <MKAnnotation>
#property (nonatomic) CLLocationCoordinate2D coordinate;
#property (strong, nonatomic) NSString *myTitle;
+ (Annotation *)initAnnotation:(CLLocationCoordinate2D)coordinate title:(NSString *)title;
#end
Implementation
#import "Annotation.h"
#implementation Annotation
+ (Annotation *)initAnnotation:(CLLocationCoordinate2D)coordinate title:(NSString *)title
{
return [[Annotation alloc] initWithAnnotation:coordinate title:title];
}
- (instancetype)initWithAnnotation:(CLLocationCoordinate2D)coordinate title:(NSString *)title
{
self = [super init];
self.coordinate = coordinate;
self.myTitle = title;
return self;
}
#end
ViewController
#import "ViewController.h"
#import <MapKit/MapKit.h>
#import "Annotation.h"
#interface ViewController ()
#property (weak, nonatomic) IBOutlet MKMapView *mapView;
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//set coordinates
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(51.50851, -0.02172);
//add annotation
Annotation *annotation = [Annotation initAnnotation:coordinate title:#"Annotation"];
[self.mapView addAnnotation:annotation];
[self.mapView showAnnotations:#[annotation] animated:YES];
// add circle with radius
MKCircle *circle = [MKCircle circleWithCenterCoordinate:annotation.coordinate radius:10000];
[self.mapView addOverlay:circle];
//add region by coordinates
MKCoordinateRegion region;
region.center.latitude = 51.50851;
region.center.longitude = -0.02172;
// level zoom
region.span.latitudeDelta = 1;
region.span.longitudeDelta = 1;
region = [self.mapView regionThatFits:region];
[self.mapView setRegion:region animated:YES];
}
Do not forget to set the controller as a map delegate, and implement the circle mapping method
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>) overlay{
MKCircleRenderer *circleView = [[MKCircleRenderer alloc] initWithOverlay:overlay];
circleView.fillColor = [[UIColor greenColor] colorWithAlphaComponent:0.4];
return circleView;
}[![enter image description here][1]][1]
Pin appears, and you can adjust its size
https://prntscr.com/lvfjwi
I am trying to display a UIImage as a overlay for a map-based iPad application. I attempted to follow the 4 steps to setting a custom overlay defined in Apple's documentation: define the overlay data object, define the object renderer, implement the map view in map view delegate, and add overlay data object to to map view. After attempting to do all these, there is no overlay when I run the simulator. Any advice would be fantastic. My code is as follows
ViewController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
#import "bjorkOverlay.h"
#import "bjorkOverlayRenderer.h"
#interface TUTViewController : UIViewController <MKMapViewDelegate>
{
CLLocationManager *locationManager;
CLLocation *location;
}
#property (strong, nonatomic) IBOutlet MKMapView *mapView;
#property(nonatomic) MKCoordinateRegion region;
#property (nonatomic, readonly) MKMapRect boundingMapRect;
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
#property (nonatomic, readonly) CLLocationCoordinate2D bjorkOverlayCenterPoint;
#property (nonatomic, readonly) MKMapRect bjorkOverlayBoundingMapRect;
#end
ViewController.m
#import "TUTViewController.h"
#import "bjorkOverlay.h"
#import "bjorkOverlayRenderer.h"
#import MapKit;
#interface TUTViewController () <MKMapViewDelegate>
#end
#implementation TUTViewController
- (void)viewDidLoad
{
[super viewDidLoad];
locationManager = [[CLLocationManager alloc] init];
[locationManager startUpdatingLocation];
_mapView.showsUserLocation = YES;
_mapView.delegate = self;
CLLocationCoordinate2D lowerLeftCoord = CLLocationCoordinate2DMake( 45.022943 ,-87.146606);
MKMapPoint lowerLeft = MKMapPointForCoordinate(lowerLeftCoord);
CLLocationCoordinate2D upperRightCoord = CLLocationCoordinate2DMake( 45.048513, -87.124765);
MKMapPoint upperRight = MKMapPointForCoordinate(upperRightCoord);
MKMapRect mapRect = MKMapRectMake(lowerLeft.x, upperRight.y, upperRight.x - lowerLeft.x, lowerLeft.y - upperRight.y);
[self.mapView setVisibleMapRect:mapRect animated:YES];
bjorkOverlay * mapOverlay = [[bjorkOverlay alloc] init];
[_mapView addOverlay:mapOverlay];
}
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay: (id<MKOverlay>)overlay {
MKOverlayRenderer *mapOverlay = [[MKOverlayRenderer alloc] init];
return mapOverlay;
}
// Do any additional setup after loading the view, typically from a nib.
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
bjorkOverlay.h
#import <Foundation/Foundation.h>
#import MapKit;
#interface bjorkOverlay : NSObject <MKOverlay>
+ (id)overlayWithCoordinate:(CLLocationCoordinate2D)coordinate;
#property (nonatomic, assign) CLLocationCoordinate2D bjorkOverlayCenterPoint;
#property (nonatomic) MKMapRect bjorkOverlayBoundingMapRect;
#end
bjorkOverlay.m
#import "bjorkOverlay.h"
#import MapKit;
#implementation bjorkOverlay
+ (id)overlayWithCoordinate:(CLLocationCoordinate2D)coordinate radius:(CLLocationDistance)radius{
bjorkOverlay* overlay = [[bjorkOverlay alloc] init];
overlay.coordinate = coordinate;
return overlay;
}
-(MKMapRect)boundingMapRect{
CLLocationCoordinate2D lowerLeftCoord = CLLocationCoordinate2DMake( 45.022943 ,-87.146606);
MKMapPoint lowerLeft = MKMapPointForCoordinate(lowerLeftCoord);
CLLocationCoordinate2D upperRightCoord = CLLocationCoordinate2DMake( 45.048513, -87.124765);
MKMapPoint upperRight = MKMapPointForCoordinate(upperRightCoord);
MKMapRect mapRect = MKMapRectMake(lowerLeft.x, upperRight.y, upperRight.x - lowerLeft.x, lowerLeft.y - upperRight.y);
return mapRect;
}
- (CLLocationCoordinate2D)bjorkOverlayCenterPoint
{
CLLocationCoordinate2D coord1 = {
45.035728,-87.1356855
};
return coord1;
}
#end
bjorkOverlayRenderer.h
#import <MapKit/MapKit.h>
#interface bjorkOverlayRenderer : MKOverlayRenderer
#end
bjorkOverlayRender.m
#import "bjorkOverlayRenderer.h"
#implementation bjorkOverlayRenderer
- (void)drawMapRect:(MKMapRect)mapRect
zoomScale:(MKZoomScale)zoomScale
inContext:(CGContextRef)ctx
{
UIImage *image = [UIImage imageNamed:#"overlay.png"];
CGImageRef imageReference = image.CGImage;
MKMapRect theMapRect = [self.overlay boundingMapRect];
CGRect theRect = [self rectForMapRect:theMapRect];
CGRect clipRect = [self rectForMapRect:mapRect];
CGContextAddRect(ctx, clipRect);
CGContextClip(ctx);
CGContextDrawImage(ctx, theRect, imageReference);
}
#end
Any advice would be great or if you have seen sample code for MKOverlayRenderer I would appreciate a link. Thanks
I'm new to iOS, and it's so different from Android logic that I can't find how to add a marker to a map :-|
I've added a MKMapView to my xib
I've added this code to my .m (trimmed)
#import "AppDelegate.h"
#import <MapKit/MapKit.h>
#interface Dove ()
#property (weak,nonatomic) IBOutlet MKMapView *mappa;
#end
#define METERS_PER_MILE 1609.344
#implementation Dove
- (IBAction)vaiHome:(id)sender {
Index *second = [[Index alloc] initWithNibName:#"Index" bundle:nil];
[self presentViewController:second animated:YES completion:nil];
}
- (void)viewDidLoad
{
[super viewDidLoad];
CLLocationCoordinate2D zoomLocation;
zoomLocation.latitude = 45.40170;
zoomLocation.longitude= 8.91552;
MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(zoomLocation, METERS_PER_MILE, METERS_PER_MILE);
[_mappa setRegion:viewRegion animated:YES];
[_mappa regionThatFits:viewRegion];
}
Now, how can I display a pin at that position? It should simple, but I can't find a solution :-|
Also, the map remain in united states but it most go to the marker.
Thanks a lot.
First you have to setup the annotation marker (call this in your viewdidload):
- (void)setupAnnotation
{
CLLocationCoordinate2D zoomLocation;
zoomLocation.latitude = 45.40170;
zoomLocation.longitude= 8.91552;
NARMapViewAnnotation* annot = [[NARMapViewAnnotation alloc] initWithCoord:zoomLocation];
[_mapView addAnnotation:annot];
}
Then you have to setup the MKMapViewDelegate method:
- (void)mapView:(MKMapView *)mv didAddAnnotationViews:(NSArray *)views
{
MKAnnotationView* annotView = [views objectAtIndex:0];
id<MKAnnotation> mp = [annotView annotation];
MKCoordinateRegion region = [mv regionThatFits:MKCoordinateRegionMakeWithDistance([mp coordinate], REGION_WINDOW, REGION_WINDOW)];
[mv setRegion:region animated:YES];
}
NARMapViewAnnotation:
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface NARMapViewAnnotation : NSObject <MKAnnotation>
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
- (id)initWithCoord:(CLLocationCoordinate2D)coord;
#end
#import "NARMapViewAnnotation.h"
#implementation NARMapViewAnnotation
- (id)initWithCoord:(CLLocationCoordinate2D)coord
{
if (self = [super init])
{
_coordinate = coord;
}
return self;
}
#end
I'm trying to zoom into the user location as the center reference for the screen. I have this code:
MainViewController.h
#import <UIKit/UIKit.h>
#import "FlipsideViewController.h"
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
IBOutlet MKMapView *mapView;
#interface MainViewController : UIViewController <FlipsideViewControllerDelegate, MKMapViewDelegate> {
MKMapView *mapView;
}
#property (nonatomic, retain) IBOutlet MKMapView *mapView;
MainViewController.m
#implementation MainViewController
#synthesize mapView;
- (void)viewDidLoad {
[super viewDidLoad];
mapView = [[MKMapView alloc]
initWithFrame:self.view.bounds
];
mapView.showsUserLocation = YES;
mapView.mapType = MKMapTypeHybrid;
mapView.delegate = self;
[self.view addSubview:mapView];
}
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation {
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.005;
span.longitudeDelta = 0.005;
CLLocationCoordinate2D location;
location.latitude = userLocation.coordinate.latitude;
location.longitude = userLocation.coordinate.longitude;
region.span = span;
region.center = location;
[mapView setRegion:region animated:YES];
}
Now I'm only getting a build warning on the last line [mapView setRegion:region animated:YES] stating: 'local declaration of 'mapView' hides instance variable'
When you do mapView.showsUserLocation = YES;, you ask it to retrieve the user location. This doesn't happen instantly. As it takes time, the map view notifies its delegate that a user location is available via the delegate method mapView:didUpdateUserLocation. So you should adopt the MKMapViewDelegate protocol and implement that method. You should move all your zooming-in code to this method.
Setting the delegate
- (void)viewDidLoad {
[super viewDidLoad];
mapView = [[MKMapView alloc]
initWithFrame:CGRectMake(0,
0,
self.view.bounds.size.width,
self.view.bounds.size.height)
];
mapView.showsUserLocation = YES;
mapView.mapType = MKMapTypeHybrid;
mapView.delegate = self;
[self.view addSubview:mapView];
}
Updated delegate method
- (void)mapView:(MKMapView *)aMapView didUpdateUserLocation:(MKUserLocation *)aUserLocation {
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.005;
span.longitudeDelta = 0.005;
CLLocationCoordinate2D location;
location.latitude = aUserLocation.coordinate.latitude;
location.longitude = aUserLocation.coordinate.longitude;
region.span = span;
region.center = location;
[aMapView setRegion:region animated:YES];
}
In your interface you forgot to inherit MapViewDelegate -
#import <MapKit/MapKit.h>
#interface MainViewController : UIViewController <FlipsideViewControllerDelegate, MKMapViewDelegate>
{
MKMapView *mapView;
}
#property (nonatomic, retain) IBOutlet MKMapView *mapView;
Rest seems fine.
I need help with showing the user's location on my MapView. I have done everything I could possibly find online, but it still does not work.
I have a CLLocationManager in my AppDelegate that calls the locationUpdate in my viewController.
The (void)locationUpdate:(CLLocation *)location method gets called every time and the location coordinates is correct when logged with the NSLog(). Still, there is no "Blue Dot" on my iPhone's screen. The region is not set as well.
Please take a look and tell me if I am missing anything.
This is my header file:
//My .h file
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <MapKit/MKAnnotation.h>
#import <MapKit/MKReverseGeocoder.h>
#interface FirstViewController : UIViewController <MKMapViewDelegate>
{
MKMapView *mapView;
}
-(void)locationUpdate:(CLLocation *)location;
-(void)locationError:(NSError *)error;
#end
This is my part of my implementation file:
//My .m file
#import "FirstViewController.h"
#implementation FirstViewController
- (void)viewDidLoad
{
mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
mapView.showsUserLocation = YES;
mapView.mapType = MKMapTypeStandard;
mapView.delegate = self;
CLLocationCoordinate2D location;
MKCoordinateRegion region;// = {{0.0,0.0},{0.0,0.0}};
location.latitude = -33.8771;
location.longitude = 18.6155;
MKCoordinateSpan span;
span.latitudeDelta = 0.01;
span.longitudeDelta = 0.01;
region.span = span;
region.center = location;
[mapView setRegion:region animated:TRUE];
[mapView regionThatFits:region];
[super viewDidLoad];
}
-(void)locationUpdate:(CLLocation *)location
{
CLLocationCoordinate2D loc = [location coordinate];
[mapView setCenterCoordinate:loc];
if([mapView showsUserLocation] == NO)
[mapView setShowsUserLocation:YES];
NSLog(#"User Loc: %f, %f", mapView.userLocation.location.coordinate.latitude,
mapView.userLocation.location.coordinate.longitude);
NSLog(#"In MapView: %#",[location description]);
}
#end
Thank you for your time!
It is much appreciated!
Your Map kit in Interface Builder needs to have the (Find User Location) checked!!