I have the digdog MapKitDragAndDrop in one my projects to achieve drag and drop pins. Im also allowing the user to search for location based on the address.
When the user searched and found his location coordinates, i want the pin to move to that location. Animation etc is not mandatory
I not able to figure out how to move the pin manually.
Just provide a new set of coordinates for your annotation, remove it and put it back in the map view's annotations. Some code from you would help be precise.
But basically the idea is that you remove the annotation from the map view and then put it back again, with the good coordinates. As a DDAnnotation is a MKPlacemark, that shouldn't be too hard.
It would look like:
- (void)annotation:(DDAnnotation*)annotation hasNewCoordinates:(CLLocation)location{
[_mapView removeAnnotation:annotation];
annotation._coordinate = location;
[_mapView addAnnotation: annotation];
}
Of course untested.
Related
My map shows current location with blue dot..
Of course, when I move, blue dot moves.. I just want to keep blue dot center of the map all the time, making map's moving instead like Google map navigator..
I searched a lot but couldn't find the way...
In your map view delegate, do this:
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
[mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
}
Try using mapView.userTrackingMode = MKUserTrackingModeFollow;, you'll get smoother panning than using the location manager manually.
In addition note that there is a ready-made button for managing the various tracking states:
MKUserTrackingBarButtonItem.
The easiest way would be to create a new UIView on top of your map's view with a blue dot and only move the map's view.
In my iPhone application, I want to drop a pin at my current location using mapView and I also need to move another pin or a ball as my position changes. How can I do this?
To display user location, just add :
mapView.showsUserLocation = YES;
To get it, use the method userLocation which gives you a MKUserLocation.
You can then add a id<MKAnnotation> object with addAnnotation method to display another pin.
If I want a map view to show a specific map region (which is the same each time the app launches?), how would I set that up?
Also, it is possible to prevent the user from scrolling away from this region, and also prevent the user from scrolling too far out?
1. Specific region
MKCoordinateRegion predefinedRegion;
[mapView setRegion:predefinedRegion animated:YES];
2. Prevent scrolling
mapView.scrollEnabled = NO;
3. Prevent zooming
mapView.zoomEnabled = NO;
If you just want to limit the zoom level it is a bit more complicated because zooming effectively changes the region. The best way to manage this is probably by using the MKMapViewDelegate protocol methods such as mapView:regionWillChangeAnimated:.
Cheers,
Sascha
Update #5 I guess it's bounty time. 100+ views and no one's taken a stab, even with the code sample I've posted. How about some reputation points!
Update #4This is a pretty complicated question, so I created a new tab based project which just includes the parts of my app I'm having trouble with here. You can download it from: http://www.servinitup.net/CustomCalloutAnnotation.zip
Feel free to open it up (need to add your own bundle identifier to run it on your phone) and play around with it, and see if you can get that darned callout annotation to move with the pin!
Update #3 Tried making setAnnotation a public method of the tutorial's CalloutMapAnnotationView and calling that directly. Didn't have any luck. Despite little oddities that occurred, the only thing that moved was the little triangle portion of the callout. I could not get the entire callout to move.
Update #2 Still not much luck, but have now been looking for ways to programmatically create a "pinch to zoom" and then undo it immediately, so the user never sees a change. Hoping that doing this programmatically will have the same effect as doing it manually, and the callout annotation will pop back to it's parent. Any ideas?
Update #1 After playing around here's where I've gotten:
- replaced self.calloutAnnotation.coordinate = coords; with self.calloutAnnotation.latitude = coords.latitude;self.calloutAnnotation.longitude = coords.longitude;
- With that changed, if I slightly pinch the map to zoom in or out after the pin has been updated, the callout annotation animates to the correct position, right over the pin.
So now I need to figure out how to get this to happen without the user having to actually pinch to zoom.
Original Post
I, along with other SO users, are using this awesome solution to create a custom callout annotation:
http://blog.asolutions.com/2010/09/building-custom-map-annotation-callouts-part-1/
When you use a standard callout (annotationview.canShowCallout = true) and the pin moves around the screen as the location is updated, the standard callout tracks right along with the pin, as if they're locked together.
When using the custom callout solution above, when my pin moves around after location updates, the callout annotation stays in it's original location. Of course, I'd like to mimic the iOS standard and have the custom callout annotation track along with the pin.
Here's the code I have so far, that's successfully moving the annotation view, but not the custom callout annotation view:
/* core location broadcasts a notification, and my view controller listens to that notification and calls locationManagerDidFindLocation */
- (void)locationManagerDidFindLocation:(NSNotification *)notif {
CLLocation *location = [notif.userInfo objectForKey:#"location"];
CLLocationCoordinate2D coords = [location coordinate];
MKCoordinateSpan span = MKCoordinateSpanMake((5/69), (5/69));
MKCoordinateRegion region = {coords, span};
// if we don't have a current location yet, create one, place it on the map, and adjust the map's region
// otherwise, update the annotation placement and map position in a smooth animation
if (self.currentLocationAnnotation == nil) {
self.currentLocationAnnotation = [[CurrentLocationAnnotation alloc] initWithCoordinate:coords andTitle:#"My Title" andSubtitle:#"My subtitle"];
[self.mapView addAnnotation:self.currentLocationAnnotation];
[self.mapView setRegion:region animated:true];
[self.mapView regionThatFits:region];
} else {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.45];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
// this moves my annotation view perfectly
self.currentLocationAnnotation.coordinate = coords;
// ******* this is where my problem is
// ******* this custom callout annotation view stays
// ******* in it's original place, even though it's
// ******* parent annotation view is moving around the screen
self.calloutAnnotation.coordinate = coords;
[self.mapView setRegion:region animated:true];
[self.mapView regionThatFits:region];
[UIView commitAnimations];
}
}
I created a project based on your CalloutMapAnnotationView demonstrating a IB based solution. Arrow keys animate motion of the location annotation and it's callout annotation. The callout now also automatically resizes based on the supplied contentView, and the view is loaded from a separate nib. Good luck!
https://github.com/jacobjennings/JJMapCallout
I know you aren't going to like this answer, but it works. The sample you linked to just draws a custom image in the overlay through the most difficult way possible (drawRect:). Have you considered rendering your overlay once into a UIImage, and just setting the image property on a very simple MKAnnotationView? Even if you need to change the content periodically, like updating the number of friends at a bar, you can redraw the image when the change occurs and update the appropriate MKAnnotationView.
I review your code and my recommendation is to create a new custom MKAnnotationView and encapsulate on it both views (the pin and the callout).
But for your current code consider read the approved response this question: MKMapView moving Annotations Automatically - animate them?
Cheers.
I have a function that drop pin with this code:
ParkPlaceMark *placemark=[[ParkPlaceMark alloc] initWithCoordinate:location];
[mapView addAnnotation:placemark];
How to put this pin on center of the screen?
I want something similar to Uber app:
http://cl.ly/362q153W461Y1g3X1o04
User is located, dropped is red pin. Then, user can set custom location (in Uber's case, where they want to be picked with taxi cab), and when tap to button to confirm that location.
When user setting custom location, custom location pin is centered on screen, and only map is moving.
There is some sample with this on the Internet, or can you help me with some short sample?
Assuming that placemark implements the MKAnnotation protocol, you can set the coordinate property of placemark to the value of the centerCoordinate property of your mapView object.
This will mean that the placemark will always be placed on the map at the coordinate that is at the centre of where the mapView is currently looking.
Hope this helps. :)