I need to display the callout without tapping on the pin in the MKView.
I tried setSelected:animated method call but it doesn't seems to work.
Once the pin is dropped to the map, the callout should be displayed right away.
Use MKMapView:selectAnnotation:animated.
Related
I have my screen split; 50% for the map and 50% for a list of elements. As the list of elements is scroll, the annotation will pop around the map based off whichever element is in the top of the list. This part is working fine.
However, when the user taps on the map, I don't want the annotation to disappear. I really want the user's tap to interactive with the MapView instead of the AnnotationView.
Is this possible? If so, can someone point me in the right direction? Thanks.
You have a couple of options:
You can intercept the built-in tap gesture recognizer or add a custom tap gesture recognizer. When the user taps the map, check if an annotation is selected. If one is selected, call mapView:selectAnnotation: to keep it selected.
You can call mapView:selectAnnotation: in the relevant mapView:deselectAnnotation: or mapView:deselectAnnotationView: delegate method.
I want to add custom annotationView callout which contains
1. Title
2. subtitles
3. a button
The button can display on the right (rightCalloutAccessoryView) or left leftCalloutAccessoryViewsides of the callout. I want to add the button in the middle of the callout and under title->subtitle. How can I do?
There is no API for this. You could try not using the standard callout (canShowCallout = NO), catch the taps and drags on the AnnotationView manually and show your own UI by adding custom Views based on the position of the AnnotationView. This seems very fragile, though.
I have a custom MKAnnotationView subclass. It is showing the view exactly as I want it to. In that view, I have a button. I want to capture events on the button to perform an action. This works just fine.
However, I do NOT want the callout to be dismissed or disappear. Basically, touching the button in the callout will start playing a sound, but I want to leave the annotation up so the user can press stop if they want to, without having to touch the map pin again to bring the annotation back up. In another instance, I want the button touch to animate more details in the callout, so I definitely don't want to dismiss the callout at that point.
How can I keep the callout from disappearing whenever the user selects the callout or a button inside the callout?
This may not be the best solution, but it definitely works. First off, I tried a number of things, like observing for context and such, but I never got past crashing, and it seemed cumbersome. So, this is what I did:
I first specified what the controlling factor was for keeping an alert viewable. In my case, I created a custom annotation view, and whenever the user clicks a button on that custom view, I want it to stay visible, and maybe even change the content. So, I set a delegate on that custom view so that my map can know when something changes. In my map view controller, I catch that message and set a class member variable to true to signify that I want the annotation view to stay.
NOTE: This will happen before the selection messages occur.
Now, in my didDeselectAnnotation method, I check the boolean value. If I want to keep it visible, I opt to NOT remove my annotation, I reset the boolean value, and I re-select the annotation manually, setting animation to NO. This lets the annotation view "stay" visible--maybe a cheat, but the user can't see the difference. Whenever that boolean value says that deselection is ok, I simply remove the annotation and all is well.
So, the workflow is this:
Touch pin
CustomAnnotationView is displayed
User clicks a button on CustomAnnotationView, which notifies the delegate (mapView) that the
action occurred
Set the class boolean value to know that you want to keep the annotation around
mapView then calls didDeselectAnnotation method
In didDeselectAnnotation method, use conditional to decide if you should remove the annotation, or keep it around by not removing the annotation and manually re-selecting it without animation.
I hope this helps others. It took me a while to figure this out, so I hope it saves you time.
If you find a better solution, by all means, please post it here!
you can suppress callout closing by using hittest, check this following post.
Detect tap on title of callout
I have a checkin related app. When user clicks a venue on map, callout will popup and show its name and address. At the same time, if the venue is within 1000m from current location, a check in button will be displayed.
To a venue that can checkin, all I want is,
when callout is popup, check in button shows. when callout is disappear, that button disappears too.
Now show button works well, but I don't know how to detect callout visible status. Is there any callback method that callout show/hide?
Thanks in advance!
Callout appears when annotation is selected - you can use mapView:didSelectAnnotationView: method in delegate to track that event. Callout hides when annotation is deselected - use mapView:didDeselectAnnotationView: method to track that event.
As you can see here it is about selected property of MKAnnotationView, which is saying that If the property contains YES, the annotation view is displaying a callout bubble.
You may additionally implement an observer for this property, to implement your functionality.
I am working on an iPhone app in which I am implementing a map view. When the map loads, a purple pin is displayed at the current location. My problem is that I want to show the current location on a new view when the user touches this purple pin.
Any idea?
Please help.
Thanks,
Aaryan
When a user taps an annotation pin, callout annotation and accessory views can be displayed. The callout accessory views can be controls (buttons) with associated actions.
If callout views will not meet your needs, you could instead put invisible buttons with your own actions over the pins on the map view.
In either case, you can display views, navigate, etc in the method(s) called by the button actions.