如何调整缩放级别以适应边界，然后在标记偏移中调整中心贴图？

Question

I have a google map (com.google.android.gms.maps.GoogleMap) where I have some markers set.

I am able to, separately,

1) adjust zoom level and center the map on a boundary:

mMap.animateCamera(CameraUpdateFactory.newLatLngBounds(getZoomBounds(), 10));

and

2) center the map above one of the markers:

LatLng poiSelectedLatLng = new LatLng(markerSelected.getPosition().latitude 
    + offset, markerSelected.getPosition().longitude);

mMap.animateCamera(CameraUpdateFactory.newLatLng(poiSelectedLatLng));

but, for the life of me, I can't just do both, adjust the zoom level using newLatLngBounds and then center the map somewhere else. Whatever I do last is what I see happening in the map.

How do I do this?

Answer 1

For future visitors this is how you can chain camera animations:

map.animateCamera(CameraUpdateFactory.newLatLngBounds(getZoomBounds(), 10), 2000, new CancelableCallback() {

    @Override
    public void onFinish() {
        LatLng poiSelectedLatLng = new LatLng(markerSelected.getPosition().latitude + offset, markerSelected.getPosition().longitude);
        map.animateCamera(CameraUpdateFactory.newLatLng(poiSelectedLatLng));
    }

    @Override
    public void onCancel() {
    }
});

Also see AnimateCameraChainingExampleActivity.java for an example how to chain infinitely.

Answer 2

Try using both moveCamera and animateCamera ...

mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(getZoomBounds(), 10));
LatLng poiSelectedLatLng = new LatLng(markerSelected.getPosition().latitude 
    + offset, markerSelected.getPosition().longitude);

mMap.animateCamera(CameraUpdateFactory.newLatLng(poiSelectedLatLng));

moveCamera will move directly to that spot while animateCamera will provide the moving effect. They are linear in nature so one will happen after the other however layering them as I have done above will provide the potential effect you are looking for.

If you are trying to see the actual movement of both calls on the UI you will need to register for the callback post the completion of the animation as needed.