基本的にマップの変更を聴きたいときに、ユーザーが地図をドラッグして結果を再読み込みするたびに聞きたいのですが?ここではあなたが何をすべきかです:
public class AwesomeCameraActivity extends FragmentActivity implements
OnCameraIdleListener,
OnMapReadyCallback {
private GoogleMap mMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_camera);
SupportMapFragment mapFragment =
(SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap map) {
mMap = map;
mMap.setOnCameraIdleListener(this);
// Show the initial position
mMap.moveCamera(CameraUpdateFactory
.newLatLngZoom(new LatLng(YOUR_LATITUDE, YOUR_LONGITUDE), 10));
}
@Override
public void onCameraIdle() {
// The camera/map stopped moving, now you can fetch the center of the map
GeoPoint center = mMap.getProjection().fromPixels(mMap.getHeight()/2, mMap.getWidth()/2);
double centerLat = (double)center.getLatitudeE6()/(double)1E6;
double centerLng = (double)center.getLongitudeE6()/(double)1E6;
// Now fire a new search with the new latitude and longitude
searcher.setQuery(new Query().setAroundLatLng(new AbstractQuery.LatLng(centerLat, centerLng)).setAroundRadius(5000))
}
}
こんにちはThofiqは、スタックオーバーフローを歓迎! – PLNech