Android 地图 api v2 圈子

Question

不确定这里发生了什么，但我希望它在设备移动时每秒再绕一圈。它所做的只是做1个圆圈。我希望圆圈突出显示我所走的路线。建议？谢谢

LocationManager locationmanager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria cr = new Criteria();
String provider = locationmanager.getBestProvider(cr, true);
Location location = locationmanager.getLastKnownLocation(provider);

locationmanager.requestLocationUpdates(provider, 1000, 0, (LocationListener) this);




CircleOptions circleOptions = new CircleOptions()
.center(new LatLng(location.getLatitude(), location.getLongitude()));
circleOptions.radius(3.048); // In meters


mMap.addCircle(circleOptions);

Answer 1

放：

CircleOptions circleOptions = new CircleOptions()
        .center(new LatLng(location.getLatitude(), location.getLongitude()));
circleOptions.radius(3.048); // In meters

mMap.addCircle(circleOptions);

在onLocationChanged(Location location) 回调中。