CODEWITHSUNDEEP
iosobjective-c
SentientBacon
SentientBacon

Reputation: 1559

MapView error on iOS

I was using MapView on Xcode, and everything was working fine, but when I added the following line 

mapView.delegate = self;

to ViewController.m, I get the error

Assigning to 'id<MKMapViewDelegate>' from incompatible type 'ViewController *const __strong'

Here is my code:

ViewController.m:

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
@synthesize mapView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    mapView.showsUserLocation = YES;
    mapView.delegate = self; //The line I added that creates the error
    // Do any additional setup after loading the view, typically from a nib.
}

@end

ViewController.h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>

@interface ViewController : UIViewController {
    MKMapView *mapview;
}
@property (weak, nonatomic) IBOutlet MKMapView *mapView;

@end

Upvotes: 1

Views: 701

Answers (2)

Erik Godard
Erik Godard

Reputation: 6030

You need to declare that your class implements the MKMapViewDelegate methods. In your ViewController.h header file, change the line

@interface ViewController : UIViewController {

to 

@interface ViewController : UIViewController <MKMapViewDelegate> {

Upvotes: 2

John Parker
John Parker

Reputation: 54415

You need to declare that you respond to MKMapViewDelegate calls.

To do this, simply update the header file for the corresponding class (ViewController.h in your example) as follows:

@interface ViewController : UIViewController <MKMapViewDelegate> {

Upvotes: 1

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