I would like to store coordinates with additional data according to the gps locations and view the coordinates in a map with pin annotations and the additional data in Callouts (Title, Subtitle). Ive already managed to get my data from my device to my iPhone via Bluetooth. I get about every second new coordinates but my device is very slow, so i only need so save the coordinates and the additional data every 10 meters. Im new in iOS programming and Im looking forward to your help! ;)
Here is my Code:
ViewController.m
#interface SecondViewController ()
#end
extern float lat;
extern float lon;
#implementation SecondViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self setupGradients];
_mapView.showsUserLocation = YES;
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (lat > 0) {
double pointOneLatitude = lat;
double pointOneLongitude = lon;
CLLocationCoordinate2D pointOneCoordinate = {pointOneLatitude, pointOneLongitude};
KTMapAnnotation *pointOneAnnotation = [[KTMapAnnotation alloc] initWithCoordinate:pointOneCoordinate];
[pointOneAnnotation setTypeOfAnnotation:PIN_ANNOTATION];
[self.mapView addAnnotation:pointOneAnnotation];
}
}
ViewController.h
import <UIKit/UIKit.h>
import <MapKit/MapKit.h>
import "KTMapAnnotation.h"
#interface SecondViewController : UIViewController
#property (weak, nonatomic) IBOutlet MKMapView *mapView;
KTMapAnnotation.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface KTMapAnnotation : NSObject <MKAnnotation> {
CLLocationCoordinate2D _coordinate;
}
- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate;
// 08 - Add a Callout
- (NSString*) title;
- (NSString*) subtitle;
#property(nonatomic, strong) NSString *typeOfAnnotation;
#end
KTMapAnnotation.m
#import "SecondViewController.h"
#import "KTMapAnnotation.h"
#implementation KTMapAnnotation
#synthesize coordinate=_coordinate;
#synthesize typeOfAnnotation;
- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate
{
self = [super init];
if (self != nil)
{
_coordinate = coordinate;
}
return self;
}
- (void)setCoordinate:(CLLocationCoordinate2D)newCoordinate
{
_coordinate = newCoordinate;
}
// Add a Callout
- (NSString*) title
{
return #"Title“;
}
// Add a Callout
- (NSString*) subtitle
{
return #„subtitel";
}
#end
Related
I am new in objective c.I have created a project which consist of a mapView
In ViewController.h in ny project,
#import <UIKit/UIKit.h>
#import "MapKit/MapKit.h"
#interface ViewController : UIViewController
#property (weak, nonatomic) IBOutlet MKMapView *mapView;
#end
In ViewController.m file i have viewDidLoad
- (void)viewDidLoad {
[super viewDidLoad];
mapView.showsUserLocation=YES;
// Do any additional setup after loading the view, typically from a nib.
}
I want to give coordinates of more then one location in my code, and I want to show loc.png icon on map corresponding to those coordinates. how can I accomplish this task? And how to zoom the map to maximum scale ?
Form this link you can download my sample project: https://drive.google.com/file/d/0B5pNDpbvZ8SnZGZnU1ZfbjZMRWs/view?usp=sharing
I had working on your question and this are my results, use this code, now Iam using a custom class that implements the MKAnnotation protocol
EDITED
Place.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface Place : NSObject<MKAnnotation>
#property (nonatomic) CLLocationCoordinate2D coordinate;
// Title and subtitle for use by selection UI.
#property (nonatomic, nullable) NSString *title;
#property (nonatomic, nullable) NSString *subtitle;
-(id)initWithCoordinates:(CLLocationCoordinate2D) coordinates andName:(NSString*)name;
#end
Place.m
#import "Place.h"
#implementation Place
#synthesize coordinate,title,subtitle;
-(id)initWithCoordinates:(CLLocationCoordinate2D) coordinates andName:(NSString*)name
{
self = [super init];
if(self)
{
[self setTitle:name];
[self setCoordinate:coordinates];
}
return self;
}
#end
Modified Code
#import "ViewController.h"
#import "Place.h"
#interface ViewController () <MKMapViewDelegate>
#property NSMutableArray * arrayOfLocations;
#end
#implementation ViewController
#synthesize mapView;
- (void)viewDidLoad {
[super viewDidLoad];
mapView.showsUserLocation=YES;
self.arrayOfLocations = [NSMutableArray arrayWithObjects:[[Place alloc] initWithCoordinates:CLLocationCoordinate2DMake(40.416691, -3.700345) andName:#"MADRID"],
[[Place alloc] initWithCoordinates:CLLocationCoordinate2DMake(35.416691, -3.700345) andName:#"SOMEWARE IN THE MAP"],
[[Place alloc] initWithCoordinates:CLLocationCoordinate2DMake(35.416691, -40.700345) andName:#"SOMEWARE IN THE MAP1"],
[[Place alloc] initWithCoordinates:CLLocationCoordinate2DMake(20.416691, -50.700345) andName:#"SOMEWARE IN THE MAP2"], nil];
[self.mapView setDelegate:self];
[self.mapView addAnnotations:self.arrayOfLocations];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (nullable MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
MKAnnotationView * annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:#"testAnnotationView"];
if(annotationView == nil){
annotationView = [[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:#"testAnnotationView"];
annotationView.image = [UIImage imageNamed:#"loc.png"];
annotationView.canShowCallout = true;
}
return annotationView;
}
#end
Hope this helps you,
This is how it looks
I have an MKMapView on my storyboard and when i go to the storyboard just a default view loads not the specifications have set lat and long and span but doesnt zoom to the location im looking for.
here is .h
//
// ContactViewController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#interface ContactViewController : UIViewController
#property (weak, nonatomic) IBOutlet MKMapView *myMapView;
#end
here is .m
//
// ContactViewController.m
#import "ContactViewController.h"
#interface ContactViewController ()
#end
// define long and lat of location
#define map_long 42.877391;
#define map_lat -80.734766;
// define span
#define map_span 0.05f;
#implementation ContactViewController
#synthesize myMapView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
//[super viewDidLoad];
MKCoordinateRegion myregion;
CLLocationCoordinate2D mycenter;
mycenter.latitude = map_lat;
mycenter.longitude = map_long;
MKCoordinateSpan myspan;
myspan.latitudeDelta = map_span;
myspan.longitudeDelta = map_span;
myregion.center = mycenter;
myregion.span = myspan;
// Do any additional setup after loading the view.
[myMapView setRegion:myregion animated:YES];
[myMapView setCenterCoordinate:mycenter animated:YES];
}
#end
You're not assigning anything to myCenter .
You should be creating your region with something like:
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(yourCenterCoord, 250, 250);
(where the first parameter is your CLLocationCoordinate2D center variable and the other two are latitude and longitude distance from center)
I have followed this tutorial:
http://www.shawngrimes.me/2011/04/custom-map-pins-for-mapkit/#comment-193
but I can't add a title and description
(see my code here http://pastebin.com/03mDLc9q)
You are trying to set name and description as properties of your annotation's view, you should be using title and subtitle on your annotation object - MyAnnotationClass, the annotation view will use title and subtitle of this object when the callout is rendered.
I changed your code to work here: http://pastebin.com/YRGYhQev
#interface MyAnnotationClass : NSObject<MKAnnotation>
#property (nonatomic, retain) NSString *title;
#property (nonatomic, retain) NSString *subtitle;
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
-(id) initWithCoordinate:(CLLocationCoordinate2D) coordinate;
#end
MyAnnotationClass.m
#import "MyAnnotationClass.h"
#implementation MyAnnotationClass
-(id) initWithCoordinate:(CLLocationCoordinate2D) coordinate{
self=[super init];
if(self){
_coordinate = coordinate;
}
return self;
}
-(void) dealloc{
[_title release];
[_subtitle release];
[super dealloc];
}
#end
ViewController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#interface ViewController : UIViewController<MKMapViewDelegate> {
IBOutlet MKMapView *_myMapView;
NSArray *_myAnnotations;
}
#property (nonatomic, retain) NSArray *myAnnotations;
#property (nonatomic, retain) IBOutlet MKMapView *myMapView;
#end
ViewController.m
#import "ViewController.h"
#import "AppDelegate.h"
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
#import "PlaceMark.h"
#import "MyAnnotationClass.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize myMapView = _myMapView;
#synthesize myAnnotations = _myAnnotations;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(void) viewDidLoad{
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
//Initialize annotation
MyAnnotationClass *commuterLotAnnotation=[[MyAnnotationClass alloc] initWithCoordinate:CLLocationCoordinate2DMake(appDelegate.latitude , appDelegate.longitude)];
commuterLotAnnotation.title = #"Hello title";
commuterLotAnnotation.subtitle = #"Correct";
MyAnnotationClass *overflowLotAnnotation=[[MyAnnotationClass alloc] initWithCoordinate:CLLocationCoordinate2DMake(appDelegate.latitude , appDelegate.longitude)];
overflowLotAnnotation.title = #"Hello title";
overflowLotAnnotation.subtitle = #"Correct";
//Add them to array
self.myAnnotations=[NSArray arrayWithObjects:commuterLotAnnotation, overflowLotAnnotation, nil];
//Release the annotations now that they've been added to the array
[commuterLotAnnotation release];
[overflowLotAnnotation release];
//add array of annotations to map
[_myMapView addAnnotations:_myAnnotations];
}
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id)annotation{
static NSString *parkingAnnotationIdentifier=#"ParkingAnnotationIdentifier";
if([annotation isKindOfClass:[MyAnnotationClass class]]){
//Try to get an unused annotation, similar to uitableviewcells
MKAnnotationView *annotationView=[_myMapView dequeueReusableAnnotationViewWithIdentifier:parkingAnnotationIdentifier];
//If one isn't available, create a new one
if(!annotationView){
annotationView=[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:parkingAnnotationIdentifier];
//Here's where the magic happens
annotationView.image=[UIImage imageNamed:#"apple.gif"];
annotationView.canShowCallout = YES;
}
return annotationView;
}
return nil;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
I see that the tutorial has the MyAnnotationClass interface as:
#interface MyAnnotationClass : NSObject
When I used MKAnnotation I set my annotation interface up as:
#interface MyAnnotationClass : MKAnnotationView <MKAnnotation>
Then in the MyAnnotationClass.m file I have the following methods:
- (NSString *)title{
return self.name;
}
- (NSString *)subtitle{
return self.description;
}
I have a UITableView that opens a view with a map, i called Mapa class. I am having problems passing any kind of text information from this table view to the map. I need to send a string text to be the title of my map, and the coordinates of a CLLocation.
Here is part of the code
MyTableView.m:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
instMapa = [[Mapa alloc] initWithNibName:#"Mapa" bundle:nil];
instMapa.mytext = #"pass text to be the title";
[self.navigationController pushViewController:instMapa animated:YES];
}
Mapa.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <MapKit/MKAnnotation.h>
#class MapViewAnnotation;
#interface Mapa : UIViewController <MKMapViewDelegate> {
IBOutlet MKMapView *mapView;
NSString *stringTitle;
NSString *mytext;
MapViewAnnotation *newAnnotation;
}
#property (nonatomic, retain) IBOutlet MKMapView *mapView;
#property (nonatomic, retain) NSString *stringTitle;
#property (nonatomic, retain) NSString *mytext;
#property (nonatomic, retain) MapViewAnnotation *newAnnotation;
#end
Mapa.m
#import "Mapa.h"
#import "MapViewAnnotation.h"
#implementation Mapa
#synthesize mapView;
#synthesize stringTitle;
#synthesize mytext;
#synthesize newAnnotation;
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
CLLocationCoordinate2D location;
location.latitude = (double) 51.501468;
location.longitude = (double) -0.141596;
// Add the annotation to our map view
newAnnotation = [[MapViewAnnotation alloc] initWithTitle:mytext andCoordinate:location];
[self.mapView addAnnotation:newAnnotation];
}
// When a map annotation point is added, zoom to it (1500 range)
- (void)mapView:(MKMapView *)mv didAddAnnotationViews:(NSArray *)views
{
MKAnnotationView *annotationView = [views objectAtIndex:0];
id <MKAnnotation> mp = [annotationView annotation];
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance([mp coordinate], 1500, 1500);
[mv setRegion:region animated:YES];
[mv selectAnnotation:mp animated:YES];
}
// Received memory warning
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
// If the view unloads, release the map view
- (void)viewDidUnload {
}
- (void)dealloc {
[newAnnotation release];
[mytext release];
[stringTitle release];
[mapView release];
[super dealloc];
}
#end
MapViewAnnotation.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface MapViewAnnotation : NSObject <MKAnnotation> {
NSString *title;
CLLocationCoordinate2D coordinate;
}
#property (nonatomic, copy) NSString *title;
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
- (id)initWithTitle:(NSString *)ttl andCoordinate:(CLLocationCoordinate2D)c2d;
#end
MapViewAnnotation.m
#implementation MapViewAnnotation
#synthesize title, coordinate;
- (id)initWithTitle:(NSString *)ttl andCoordinate:(CLLocationCoordinate2D)c2d {
[super init];
title = ttl;
coordinate = c2d;
return self;
}
- (void)dealloc {
[title release];
[super dealloc];
}
#end
Thanks for the help!
From your question, I understand that; you need to pass the string value of the selected table view cell to your map view.
For that you need to write this code in your didSelectRowAtIndexPath,
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
instMapa.mytext = cell.textLabel.text;
Can anyone help me with a problem I have with a mapView application that is only displaying the default location and not the specific location I have specified. My code is as follows. I'm learning Xcode so have probably made a schoolboy error :-
.H
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#interface RavenMapViewController : UIViewController <MKMapViewDelegate> {
MKMapView *mapView;
}
#property (nonatomic, retain) IBOutlet MKMapView *mapView;
-(void) goLocation;
#end
.M
#import "RavenMapViewController.h"
#implementation RavenMapViewController
#synthesize mapView;
-(void) goLocation
{
MKCoordinateRegion newRegion;
newRegion.center.latitude = 39.278112;
newRegion.center.longitude = -76.622772;
newRegion.span.latitudeDelta = 0.008388;
newRegion.span.longitudeDelta = 0.016243;
[self.mapView setRegion:newRegion animated:YES];
}
- (void)viewDidLoad
{
[self goLocation];
}
- (void)viewDidUnload
{
}
#end