How to detect Google MapView movement in Android?

Question

I'd like to dynamically update the map/ load new map overlays every time my user moves it a certain amount of distance. How do I go about doing this? Is there a listener for every time the user moves the map? Most likely I'd just measure the distance between the center points.

Thanks!

Answer 1

Try this to detect the map movements: http://pa.rezendi.com/2010/03/responding-to-zooms-and-pans-in.html

On start and after the map has been moved, you should save the current map center. As the article suggests, track ACTION_UP to determine when the user has finished a map movement. Then, compare the new map center with the old map center. To get the map centers use MapView's getMapCenter():

http://code.google.com/android/add-ons/google-apis/reference/com/google/android/maps/MapView.html#getMapCenter()

EDIT: I have done some additional work on this, and have a complete application with code for your enjoyment. This blog post explains a timer solution to this and contains a link to Github source: http://bricolsoftconsulting.com/extending-mapview-to-add-a-change-event/