如何使用地图中心的zoomLevel和LatLng计算MapView的LatLngBounds？

Question

I have found many discussions about given LatLngBounds, how to get a fit zoom level. But now I meet a problem that I know current location of map center, and I can get what current zoom level is, and I wanna know the LatLng of the north-east corner and the south-west corner of my map view.

Any ideas? Thanks.

Answer 1

You can get the Projection of the map and the VisibleRegion :

VisibleRegion visibleRegion = mMap.getProjection().getVisibleRegion();

Then you can get the VisibleRegion 's farLeft , farRight , nearLeft and nearRight coordinates. So, if you need a LatLngBounds you can do:

LatLngBounds mapBounds = new LatLngBounds(visibleRegion.farLeft, visibleRegion.nearRight);