Animating markers on OpenStreet Maps using osmdroid

问题:

I'm using the google Maps marker animation logic given here.

My marker gets animated,but after each marker.setPosition(newPosition); I need to call mapView.invalidate();which refreshes the map resulting in very sluggish animation.

Is there any workaround?

回答1:

The next solution is working correctly for me:

import org.osmdroid.api.IGeoPoint; import org.osmdroid.api.IMapController; import org.osmdroid.util.GeoPoint; import org.osmdroid.views.MapView; import org.osmdroid.views.Projection; import org.osmdroid.views.overlay.Marker;  public void animateMarker(final Marker marker, final GeoPoint toPosition) {     final Handler handler = new Handler();     final long start = SystemClock.uptimeMillis();     Projection proj = map.getProjection();     Point startPoint = proj.toPixels(marker.getPosition(), null);     final IGeoPoint startGeoPoint = proj.fromPixels(startPoint.x, startPoint.y);     final long duration = 500;     final Interpolator interpolator = new LinearInterpolator();     handler.post(new Runnable() {         @Override         public void run() {             long elapsed = SystemClock.uptimeMillis() - start;             float t = interpolator.getInterpolation((float) elapsed / duration);             double lng = t * toPosition.getLongitude() + (1 - t) * startGeoPoint.getLongitude();             double lat = t * toPosition.getLatitude() + (1 - t) * startGeoPoint.getLatitude();             marker.setPosition(new GeoPoint(lat, lng));             if (t < 1.0) {                 handler.postDelayed(this, 15);             }             map.postInvalidate();         }     }); }

It is based on the same implementation done by some people for GoogleMaps v2, but adapted to osmdroid.

The source where I found the implementation for GoogleMaps v2 is here: How to animate marker in android map api V2?

I am using: osmdroid-android 5.5 and osmbonuspack 6.0

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