I have a problem with the custom image on MapKit annotation. Building a sample project where I am performing the same test, it works properly (although the drop effect and the custom image do not work).
But when I use exactly the same function on my map view project, the custom image does not appear. I noticed that the color pin change function MKPinAnnotationColorPurple does not work either. Is it possible that it depends on some project properties?
The code is:
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
static NSString *identifier = #"MyLocation";
if ([annotation isKindOfClass:[MyLocation class]]) {
MKPinAnnotationView *annotationView = (MKPinAnnotationView *) [_mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
} else {
annotationView.annotation = annotation;
}
annotationView.enabled = YES;
annotationView.animatesDrop= NO;
annotationView.image=[UIImage imageNamed:#"arrest.png" ];//here we use a nice image instead of the default pins
annotationView.canShowCallout = YES;
UIButton *btnDetails = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
//[btnDetails addTarget:self action:#selector(prova) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView=btnDetails;
return annotationView;
}
return nil;
}
The UIButtonTypeDetailDisclosure does not appear either (in other projects it does).
Related
Hi am trying to change the annotation detail view(show in map image) into a custom design like the second image.
How can i change that background image and all?
my current code is
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id)annotation {
mapView.showsUserLocation = YES;
if([annotation isKindOfClass:[MKUserLocation class]])
return nil;
static NSString *identifier = #"myAnnotation";
MKPinAnnotationView * annotationView = (MKPinAnnotationView*)[_MAPVIEW dequeueReusableAnnotationViewWithIdentifier:identifier];
if (!annotationView)
{
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
annotationView.pinColor = MKPinAnnotationColorPurple;
annotationView.canShowCallout = YES;
}else {
annotationView.annotation = annotation;
}
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[infoButton addTarget:self action:#selector(showDetailView) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = infoButton;
UIImageView *imageV=[[UIImageView alloc]initWithImage:[UIImage imageNamed:#"pin.png"]];
annotationView.leftCalloutAccessoryView=imageV;
return annotationView;
}
current annotation detail view design(when i click on pin then i can see the annotation detail view )
but i want something like this design
please help me.
I have a strange behavior when loading annotations in a map.
I have a custom annotation that loads different images according to a property.
During the development of the project i have changed one of this image (removed the resource from the project and added the new one)
When i debug the app with the simulator it work fine. loading the correct images.
On the device it still load the old image i removed. (the image is no longer in the project!)
I cleaned the device unistalling the app, and i still have the problem.
Here the code where i set the images in the annotations.
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
static NSString *identifier = #"ParkingLocation";
if ([annotation isKindOfClass:[ParkingLocation class]]) {
ParkingLocation *parkLoc = (ParkingLocation *)annotation;
if ([parkLoc.type isEqualToString:#"CHIUSO"])
{
parkLoc.imagePin = [UIImage imageNamed:#"locator_parking"];
}
else
{
if ([parkLoc.type isEqualToString:#"PARCOMETRO"])
parkLoc.imagePin = [UIImage imageNamed:#"locator_strada"];
else
parkLoc.imagePin = [UIImage imageNamed:#"locator_general"];
}
MKAnnotationView *annotationView = (MKAnnotationView *) [self.myMapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
annotationView.image = parkLoc.imagePin;
annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
} else {
annotationView.image = parkLoc.imagePin;
annotationView.annotation = annotation;
}
return annotationView;
}
return nil;
}
The image i changed in the project is named "locator_strada"
Anyone had the same behavior? Because i'm newbie about iOS and Objective-C , maybe i'm not considering some memory issue?
Thanks
I want to display my custom annotations in the map and my current location as the standard pin in the map view with the blue color.
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
static NSString *identifier = #"MapPin";
if ([annotation isKindOfClass:[MyAnnotations class]]) {
MyAnnotations *ann= annotation;
MKAnnotationView *annotationView = (MKAnnotationView *) [self.map dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
if (ann.custom){
annotationView.image = [UIImage imageNamed:#"custom.png"];
}else{
//?? annotationView.image = [UIImage imageNamed:#"bluePin.png?"];
}
} else {
annotationView.annotation = annotation;
}
if(ann.custom){
UIButton *nextButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[nextButton addTarget:self action:#selector(annotationPicked) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView=nextButton;
}
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
annotationView.multipleTouchEnabled = NO;
return annotationView;
}
return nil;
}
If the custom property is to distinguish between your annotations and the map view's user location, that case is already handled by the first if which checks the annotation's class and the custom property would be unnecessary.
The map view's user location annotation is of type MKUserLocation so the code will return nil in that case and the map view will show the standard blue dot (assuming showsUserLocation is YES).
However, if the custom property is to distinguish between two types of your own annotations, then one problem is that it doesn't handled re-used annotation views properly (when annotationView != nil).
When an annotation view is re-used, its image and rightCalloutAccessoryView may not be right for the current annotation so those properties need to be set (or cleared) whether a view is being re-used or not. For example:
if ([annotation isKindOfClass:[MyAnnotations class]]) {
MyAnnotations *ann= annotation;
MKAnnotationView *annotationView = (MKAnnotationView *) [self.map dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
annotationView.multipleTouchEnabled = NO;
} else {
annotationView.annotation = annotation;
}
//set view properties that depend on annotation-specific properties
//regardless of whether view is new or re-used...
if (ann.custom)
{
annotationView.image = [UIImage imageNamed:#"custom.png"];
UIButton *nextButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[nextButton addTarget:self action:#selector(annotationPicked) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView=nextButton;
}
else
{
annotationView.image = [UIImage imageNamed:#"bluePin.png"];
annotationView.rightCalloutAccessoryView = nil;
}
return annotationView;
}
Though if the custom property is just to separate all your annotations from the map view's user location, it's unnecessary in the first place (as long as you check the annotation's class and set showsUserLocation to YES).
may be you put custom code in this event .because when you click on current location annotation this method calls and may be bacause of that code application crashes.
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
}
Thanks.
I am using MapKit and I am having the exact problem.
This is my code:
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
static NSString *identifier = #"MyLocation";
if ([annotation isKindOfClass:[MyLocation class]]) {
MKAnnotationView *annotationView = (MKAnnotationView *) [mymap_ios dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
} else {
annotationView.annotation = annotation;
}
annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
return annotationView;
}
return nil;
}
In this code, I can see the pin but not the blue button next to it so as. It seems that I have forgotten to do this:
mymap_ios.delegate=self;
But when I add this, the marker is not shown at all.
Can you help me on that?
When you don't set the map view's delegate, it doesn't call your viewForAnnotation and creates a default red pin without any accessory buttons.
When you set the delegate, it is calling your viewForAnnotation method but you are creating a plain MKAnnotationView which by default does not have any pre-set image or view (it's blank).
Either set the annotation view's image, add some content to the view, or simply create an MKPinAnnotationView instead of an MKAnnotationView:
MKPinAnnotationView *annotationView = (MKPinAnnotationView *) [mymap_ios ...
if (annotationView == nil) {
annotationView = [[MKPinAnnotationView alloc] init...
Also make sure that the annotation objects you add are of type MyLocation otherwise they will appear as plain red pins without an accessory button.
I dont understand why the userLocation doesnt move when i set a costum image on it.
If i don't set an image, it uses the default pin blue and it works; i can see the userlocation moves when the postion changes.
here is my viewForAnnotation taken from an other post.
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
static NSString* AnnotationIdentifier = #"Annotation";
MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mk dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier];
if (!pinView)
{
pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier] autorelease];
pinView.animatesDrop = NO;
pinView.canShowCallout = YES;
}
else
{
pinView.annotation = annotation;
}
if (annotation == mk.userLocation)
pinView.image = [UIImage imageNamed:#"PositionPin.png"];
else
pinView.image = [UIImage imageNamed:#"PositionPin.png"];
return pinView;
}
This appears to be a bug in the map view (still present in iOS 6) where the user location coordinates no longer update when a custom annotation view is used (even though documentation suggests it will work).
A workaround is to use Core Location to get user location updates and create your own annotation (instead of using the map view's userLocation) and then supplying a custom image for it in viewForAnnotation.
See the answer to Custom Annotation view for userlocation not moving the mapview for more details and some sample code to implement the workaround.
In addition, note that when using a custom image for your annotation view, you should use MKAnnotationView instead of MKPinAnnotationView.
When using MKPinAnnotationView, it sometimes shows its default pin image instead of your custom image.
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
static NSString* AnnotationIdentifier = #"Annotation";
MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mk dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier];
if (!pinView)
{
pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier] autorelease];
pinView.animatesDrop = NO;
pinView.canShowCallout = YES;
}
pinView.annotation = annotation;
pinView.image = [UIImage imageNamed:#"PositionPin.png"];
return pinView;
}