CODEWITHSUNDEEP
iosxcodemkmapview
wackytacky99
wackytacky99

Reputation: 614

Error when using MKMapView

I created a single view application with story boards. All I had in my view was MKMapView, thats it. It compiles without errors or warning but when I run it, I get this error in my console window:

<Error>: ImageIO: CGImageReadSessionGetCachedImageBlockData ***   CGImageReadSessionGetCachedImageBlockData: readSession [0x8ab5750] has bad readRef [0x14b79c70]

I'm using Xcode 4.3 and iPhone Simulator 5.1. Any thoughts?

.h File 

#import UIKit/UIKit.h
#import CoreLocation/CoreLocation.h
#import MapKit/MapKit.h

@interface WhereamiViewController : UIViewController <CLLocationManagerDelegate, MKMapViewDelegate>
{ 
IBOutlet MKMapView *worldView;
IBOutlet UIActivityIndicatorView *activityIndicator;
IBOutlet UITextField *locationTitleField;
}

@end

.m file

#import "WhereamiViewController.h"

@interface WhereamiViewController ()

@end

@implementation WhereamiViewController

- (void)viewDidLoad
{
[super viewDidLoad];
// 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

enter image description here

Upvotes: 4

Views: 3674

Answers (7)

user2261595
user2261595

Reputation:

Correct ur codes as below, and create the outlet of map view.

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

Upvotes: 0

Nadeem
Nadeem

Reputation: 128

Just ran into this:

Simple Fix: Make sure to check the box for "shows user location" for the MapView in interface builder.

Upvotes: 5

Scott Chiang
Scott Chiang

Reputation: 23

I also ran into the same problem. I solved it by commenting out all the code and compile the program. Then I uncommented each method one by one compiling after each time. For some reason that seemed to get rid of the error for me.

Upvotes: 0

Vertig0
Vertig0

Reputation: 623

Probably i should not answer a question of almost a year, but i was having the same issue and the cause was that i was calling CLLocationManager *startUpdateLocation* on viewDidLoad method, when i change it to viewWillAppear the issue dissapeared.

Upvotes: 3

user1882026
user1882026

Reputation:

My PNG's contained some transparent parts and I think this caused the problem, because after removing these parts the error disappeared. Maybe I had some error in my PNG files, because transparency should be supported.

Upvotes: 0

Emily
Emily

Reputation: 7

Well I'm doing a much simpler project so I'm not sure if it will help you. But I'll show you my code anyway. You may want to just start with this and then see if you can build from there.

So for the ViewController.h it should read......

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

Upvotes: -1

nevan king
nevan king

Reputation: 113747

That looks to me like a bug in the framework. Report it using the Apple Bug Reporter and see if it's a known issue.

Upvotes: 2

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