如何更改谷歌地图标记图标？

Question

我想更改Google Maps上选定的标记图标，因此我有以下代码：

googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
        @Override
        public boolean onMarkerClick(Marker marker) {
            if (null != currentMarker) {
                currentMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.ic_arrowautougasen));
            }
            currentMarker = marker;
            currentMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.ic_autoselektovan));              
            return true;
        }
    });

 googleMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
        @Override
        public void onMapClick(LatLng latLng) {
            if(null != currentMarker) {
                currentMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.ic_arrowautougasen));
            }
            currentMarker = null;
        }
    });

在这一行，我从下面得到错误：

       if(null != currentMarker) {
                currentMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.ic_arrowautougasen));
            }

例外情况如下：

 java.lang.IllegalArgumentException: Unmanaged descriptor
                                                                    at com.google.maps.api.android.lib6.common.k.b(:com.google.android.gms.DynamiteModulesB:162)
                                                                    at com.google.maps.api.android.lib6.impl.o.c(:com.google.android.gms.DynamiteModulesB:75)
                                                                    at com.google.maps.api.android.lib6.impl.db.a(:com.google.android.gms.DynamiteModulesB:334)
                                                                    at com.google.android.gms.maps.model.internal.q.onTransact(:com.google.android.gms.DynamiteModulesB:204)
                                                                    at android.os.Binder.transact(Binder.java:387)
                                                                    at com.google.android.gms.maps.model.internal.zzf$zza$zza.zzL(Unknown Source)
                                                                    at com.google.android.gms.maps.model.Marker.setIcon(Unknown Source)
                                                                    at ba.kordinata.kogps.live.map.MapFragment$5.onMapClick(MapFragment.java:212)

Answer 1

double latitude = 12.5044;
double longitude = 60.6671;
MarkerOptions marker = new MarkerOptions().position(new LatLng(latitude, longitude)).title("MyMaps");
marker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.my_icon)));
googleMap.addMarker(marker);

Answer 2

final MarkerOptions marker=new MarkerOptions().position(loc);

marker.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker4));
mMap.addMarker(marker);

Answer 3

这就是我在谷歌地图上设置可绘制标记的方式：

    mMap = googleMap;

    BitmapDescriptor icon = BitmapDescriptorFactory.fromResource(R.drawable.your_drawable_here);
    LatLng sydney = new LatLng(-33.852, 151.211);
    MarkerOptions markerOptions = new MarkerOptions().position(sydney)
            .title("Marker in Sydney")
            .snippet("snippet snippet snippet snippet snippet...")
            .icon(icon);
    mMap.addMarker(markerOptions);