修复Google-Map中两个Marker之间的缩放级别

Question

Currently I work with Google-Map-v2 and I want to show Direction between two Markers . Everything is ok and direction between two Markers calculate and draw fine.But only one problem is remain.

The problem is Zoom level between these two markers in Google-Map is too much. I Search in SO and find a solution for changing Zoom Level by Following code :

 LatLngBounds.Builder builder = new LatLngBounds.Builder();
    builder.include(origin);
    builder.include(dest);
    LatLngBounds bounds = builder.build();

    CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds, 50);
    mMap.animateCamera(cu);

Now it's better But still zoom level is not good. Is it possible to do some fixes on Code ? ( if I can some padding to view is fixed )

I Also change 50 to 6,12,... But nothing changed.

Answer 1

you are using the correct code, and the value (50) needs to be increased if you want to zoom less (be outer) or decreased to 0 if you want to be in the smallest area containing the two markers (you can skip the value in case).

If you set a value of 150 or more, and the level is too much you can use the animation callback to zoom out after the "latlng" zoom:

https://developers.google.com/android/reference/com/google/android/gms/maps/GoogleMap.html#animateCamera(com.google.android.gms.maps.CameraUpdate , com.google.android.gms.maps.GoogleMap.CancelableCallback)

LatLngBounds.Builder builder = new LatLngBounds.Builder();
builder.include(origin);
builder.include(dest);
LatLngBounds bounds = builder.build();

CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds, 50);
mMap.animateCamera(cu, new GoogleMap.CancelableCallback(){
    void onCancel(){}
    void onFinish(){
        CameraUpdate zout = CameraUpdateFactory.zoomBy(-3.0);
        mMap.animateCamera(zout);
    }
});

This should zoom to the latLng and when finished, zoom back of 3 levels.

Answer 2

try this:

 CameraPosition cameraPosition =
                                    new CameraPosition.Builder()
                                            .target(yourlatlng)
                                           // .bearing(targetBearing)// you can ignore it
                                            .zoom(12)// your zoom value
                                                    // .tilt(40)  // angle of view
                                            .build();


                            mMap.animateCamera(
                                    CameraUpdateFactory.newCameraPosition(cameraPosition),
                                    500,
                                    null);