android - Animate marker movements along prepared coordinates. -

i need make animated movement if airplane marker along stored coordinates in arraylist collection. i've found solution, how move marker 1 coordinate another. here code of method, moves it:

private void animatemarker(final marker plane,                            final latlng toposition,                            final boolean hidemarker,                            int currentindex) {     final handler handler = new handler();     final long start = systemclock.uptimemillis();     projection proj = gmap.getprojection();     point startpoint = proj.toscreenlocation(plane.getposition());     final latlng startlatlng = proj.fromscreenlocation(startpoint);     final long duration = 2500;      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 lat = t * toposition.latitude + (1 - t) * startlatlng.latitude;             double lng = t * toposition.longitude + (1 - t) * startlatlng.longitude;             plane.setposition(new latlng(lat, lng));              if (t < 1.0) {                 handler.postdelayed(this, 16);             } else {                 if (hidemarker) {                     plane.setvisible(false);                 } else {                     plane.setvisible(true);                 }             }         }     });     //call method start animatemarker()      // after thread finished     currentindex++;     if(currentindex < theroute.size()-1){         moveplane(plane, currentindex);     } } 

this method works perfectly, when i'm trying move object 1 coordinate another, need move along collection of coordinates. recognized, in end of code increment "currentindex" value, , call moveplane method, accepts instance of marker , new index value. here chaos starts, let me show code:

private void moveplane(marker plane, int index){     if(currentcoordindex < theroute.size()){         animatemarker(plane, theroute.get(index), false, index);     } } 

so, plane marker moving chaotically , forth coordinate , not acceptable. suppose, new thread called, when other not finished. maybe, solution quite simple, don't know how do, expect.

also need rotate marker towards next point, me that?