如何更改Google地图标记图标？

Question

我想在Google地图上更改选定的标记图标，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，我收到了以下错误：

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

这里是异常情况：

 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)

- Zookey

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你检查了这个回答吗？ - Kishore Jethava

https://dev59.com/B1gQ5IYBdhLWcg3wsGCZ#45564994 对我的项目很有用。我有一个矢量资源，所以将其转换为位图，并将图标作为标记添加。 - anoo_radha

Answer 1

这是我如何在Google地图上将一个drawable设置为marker：

    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);

- Gilad Brunfman

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这会创建一个新图标。OP想知道如何更改现有的标记。 - Tom

Answer 2

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

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

- Anchal Ajay

Answer 3

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);

- Satyam Anand

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这将创建一个新的图标。OP想知道如何更改现有的标记。 - Tom

Answer 4

    public void onLocationChanged(Location location) {
        mLastLocation = location;
        if (currentLocationMarker != null) {
            currentLocationMarker.remove();
        }

        Log.d(Constant.TAG, "Location Changed");

        // resize bitmap
        //BitmapFactory.Options options = new BitmapFactory.Options();
        //options.inScaled = false;
        //currentBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.currentpos, options);
        //currentBitmap = SubUtils.scaleBitmap(currentBitmap, 60, 60);

        //Place current location marker
        LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
        //create marker
        MarkerOptions markerOptions = new MarkerOptions();
        //add position to marker
        markerOptions.position(latLng);
        //change icon marker
        markerOptions.icon(BitmapDescriptorFactory.fromBitmap(currentBitmap));
        //add marker to googleMap
        currentLocationMarker = googleMap.addMarker(markerOptions);

        // animate targer marker
        CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(latLng)
                .zoom(15)
                .build();
        //move the map to selected marker
        googleMap.moveCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
    }

- ZeroOne

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这将创建一个新图标。OP想知道如何更改现有的标记。 - Tom