CODEWITHSUNDEEP
androidgoogle-mapsgoogle-maps-android-api-2
Miki
Miki

Reputation: 1818

How to adjust zoom level to fit boundary and then center map in marker offset?

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?

Upvotes: 7

Views: 6736

Answers (3)

Dhunju_likes_to_Learn
Dhunju_likes_to_Learn

Reputation: 1386

Made this extension functions to conveniently chain multiple camera updates.

fun GoogleMap.animateCameraWith(vararg cameraUpdates: CameraUpdate) {
    var i = 0
    animateCamera(cameraUpdates[i++], object: GoogleMap.CancelableCallback {
        override fun onCancel() {}
        override fun onFinish() {
            if (i < cameraUpdates.size) {
                animateCamera(cameraUpdates[i++], this)
            }
        }
    })
}

Taking the case of OP, it will be as simple as calling

mMap.animateCameraWith(
    CameraUpdateFactory.newLatLngBounds(getZoomBounds(), 10),
    CameraUpdateFactory.newLatLng(poiSelectedLatLng),
    // Add as many as you want
)

Upvotes: 0

MaciejG&#243;rski
MaciejG&#243;rski

Reputation: 22232

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.

Upvotes: 6

Aaron McIver
Aaron McIver

Reputation: 24723

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.

Upvotes: 2

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