MapKit example in iPhone

imagePin

In this application we will see how to map display and how to point out any location using latitude and longitude.

Step 1: Create a View base application using template. Give the application name “MapKitDisplay”.

Step 2: Xcode automatically creates the directory structure and adds essential frameworks to it. You can explore the directory structure to check out the content of the directory.

Step 3: Xpand classes and notice Interface Builder created the MapKitDisplayViewController class for you. Expand Resources and notice the template generated a separate nib, MapKitDisplay ViewController.xib, for the “ MapKitDisplay”.

Step 4: We need to add NSObject class in the project. Select Classes -> Add -> New File -> Cocoa Touch Class -> Objective C class -> select NSObject from the Subclass of. Give the file name “DisplayMap”.

Step 5: We have added two framework in the project. Select Frameworks -> Add -> Existing Frameworks -> Add CoreLocation.framework and MapKit.framework.

Step 6: In the MapKitDisplayViewController.h file, we have import MapKit framework, and define MKMapViewDelegate protocol in the file, also add Outlet with a pointer to the MkMapView class. So make the following changes in the file.

 

 

 

Step 7: Double click the MapKitDisplayViewController.xib file and open it to the Interface Builder. First drag the MapView from the library and place it to the view window. Connect File’s Owner icon to the View icon and select view. Connect File’s Owner icon to the MKMapView and select mapView. Now save the MapKitDisplayViewController.xib file, close it and go back to the Xcode.

Step 8: Open the MapKitDisplayViewController.m file and make the following changes in the file:

 

 

 

We define here first, coordinate regions to zeros, Then we enter coordinates of our place that, Kolkata (Mahatma Gandhi Road), define the latitude and longitude of this place. We create an instantiate of DisplayView object and add it to our map. To do this, we add the delegate function that will display the annotations on to our map. We start by having DisplayView name a pointer we’ll call “ann.”

Step 8: In the DisplayView.h file , we have import
<mapKit/MKAnnotation.h> and set CLLocation class reference to incorporate the geographical coordinates and altitude of our device. So make the following changes in the file.

 

 

 

Step 9: Open the DisplayView.m file and make the following changes in the file:

 

 

 

Step 10: Now compile and run the application on the simulator.

You can Download SourceCode from here MapKitDisplay

Comments 29

  1. hi…
    this is prashanth …and i have been started i phone development from last few months….i need some help for my app…
    i want to draw on already exited image in iphone ..and save back to same location ………can any one help me……

  2. thanks for the tutorial.

    how would you display more than one annotation on a map. if you had a few different locations for example.

  3. Deze code is voor fulscreen movie!

    Stap 1:
    Maak een mediaplayer.framework aan

    Stap 2:
    Zet deze code in je .h view:

    UIWindow *window;

    -(IBAction)playMovie;

    @property (nonatomic, retain) IBOutlet UIWindow *window;

    Stap 3:
    Zet deze code in je .m view:

    #import

    -(IBAction)playMovie {
    NSString *filepath = [[NSBundle mainBundle] pathForResource:@”Jou movie” ofType:@”Type movie”];
    NSURL *fileURL = [NSURL fileURLWithPath:filepath];
    MPMoviePlayerViewController *moviePlayerController = [[MPMoviePlayerViewController alloc] initWithContentURL:fileURL];
    [moviePlayerController.moviePlayer play];
    [window addSubview:moviePlayerController.view];

    }

    Ik hoop dat je hier iets aan hebt!

    Groetjes Macheo

  4. Brilliant tutorial,

    Its easy and simple helped me alot. in the same code if i want to add multiple pins and annotation any help please. I am stuck.

  5. hye, thanks for the tutorial.
    i have some problem. How i want to add more red pin in different places??
    anyone plz help…

  6. I’ve just dowloaded XCode v4
    Having some troubel to follow your example would it be possible to specify howto connect “STEP 7″ in xcode 4.

    I can get the map map up and running but it is not centering or showingen any annotations.

    -tnx for a cool site

  7. I’ve just dowloaded XCode v4
    Having some troubel to follow your example would it be possible to specify howto connect "STEP 7" in xcode 4.

    I can get the map map up and running but it is not centering or showingen any annotations.

    -tnx for a cool site

  8. Help please, i did everything as it says and get error saying:
    receiver ‘DisplayMap’ is a forward class and corresponding @interface may not exist

    and wont build :S

    • Please checked

      #import “MapKitDisplayViewController.h”
      #import “DisplayMap.h” //is it import MapKitDisplayViewController.m file?

      next checked in DisplayMap.h file

      #import // Are you import this in the file?
      Just checked and let us know if you have any problem.

  9. Doesn’t work got these messages

    DisplayMap *ann = [[DisplayMap alloc] init]; Receiver ‘DisplayMap’ is a forward class and corresponding @interface may not exist.
    ann.title = @”Kolkata”; Request for member ‘title’ in something not a structure or union
    ann.subtitle = @”Mahatma Gandhi Road”; Request for member ‘subtitle’ in something not a structure or union
    ann.coordinate = region.center; Request for member ‘coordinate’ in something not a structure or union
    [mapView addAnnotation:ann]; Type ‘DisplayMap *’ does not conform to the MKAnnotation protocol.

    I am using sdk 4.0 for iphone

    Any suggestions what to do to fix this.

    • Please checked

      You need to import DisplayMap.h file in the MapKitDisplayViewController.m file. It should be look like below:

      #import “MapKitDisplayViewController.h”
      #import “DisplayMap.h” //import this file.

      If you have still problem then let us know.

  10. Sorry about the multiple entriies it said invalid security code. Then I imported DisplayMap.h and everything works fine. Thanks gary

  11. Like most of the samples out there this is a simply a rehash of the Apple sample MapCallouts that show a single annotation, or 2. What is need for real apps is the ability to display multiple annotations from some sort of array or data structure.

  12. I have this working, thank you. However I now am working on a situation in which I have a tableview. From that I pick a cell and from that window or xib I click on a button and it flips it over to reveal a mapview. This works fine in showing the map, pin, and annotations, but I can’t get it to drop the pin, it is just there. Any suggestions on how to get this to work?

  13. I have problem with this error.
    start in crt1.10.6.o
    ld: symbol(s) not found for architecture i386
    collect2: ld returned 1 exit status
    anyone has idea about this. please help me

  14. how can i add multiple place marks on single map as just example one pin should be dropped at your current location and other pin should be dropped at other location & so on there would be other pins should be dropped by on loading map how can i create that?

  15. Pingback: MyApple.pl
  16. Use appdelegate string as singleton app.h first pe jaega
    @class first;

    @interface WOTWAppDelegate : NSObject {

    NSString *str1;

    }@property ( nonatomic,retain) UINavigationController *nav;

    @property ( nonatomic,retain) NSString *str1;

    App.m
    @synthesize window,nav,str1;
    self.viewController = [[[first alloc] initWithNibName:@”first” bundle:nil] autorelease];
    self.nav = [[UINavigationController alloc] initWithRootViewController:viewController];
    self.window.rootViewController = self.nav;
    [self.window makeKeyAndVisible];

  17. -(void)btnClick
    {
    Gridview * sat = [[Gridview alloc]init];
    [self.navigationController pushViewController:sat animated:NO];

    }

    imagesList = [[NSMutableArray alloc] init];
    [imagesList addObject:@”A1.png”];

    2nd me
    return [imagesList count];

    (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
    {
    static NSString *CellIdentifier = @”Cell”;
    customcell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
    cell = [[[customcell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    cell.Img.image=[UIImage imageNamed:[imagesList objectAtIndex:indexPath.row]];
    cell.lbl.text = [arryData objectAtIndex:indexPath.row];
    cell.sublbl.text = [subtittledata objectAtIndex:indexPath.row];
    // Configure the cell…

    return cell;

    – (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
    {

    WOTWAppDelegate *app=[[UIApplication sharedApplication] delegate];
    app.str1=[arryData objectAtIndex:indexPath.row] ;

    WOTWViewController *st = [[WOTWViewController alloc]init];
    [self.navigationController pushViewController:st animated:YES];

    }

  18. -(void)loadPDF
    {
    WOTWAppDelegate *app=[[UIApplication sharedApplication] delegate];

    NSLog(@”namepdf= %@”,app.str1);
    if ([str1 isEqualToString:@”A-Family-Man.pdf”])

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code class="" title="" data-url=""> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> <pre class="" title="" data-url=""> <span class="" title="" data-url="">