如何更改地图中标记的颜色？

Question

我需要一些帮助来更改标记颜色，在安卓中使用安卓工作室。

我把所有的标记都放在地图上。完善。

我想在用户选择点时显示一条消息。为了确保这一点，用户必须在标记中单击两次。

一切正常，用户这样做，我更改颜色，标记更改。

但是，当我单击地图中的另一个标记或任何位置时，颜色会返回原始颜色。

似乎我更改了错误的标记(另一个对象(。

这是打印标记的方法

public void plot(){
NumberFormat format = new DecimalFormat("0");
for (Coordinate c: pointsList) {
LatLng temp = new LatLng(c.getLat(), c.getLng());
Marker marker = mMap.addMarker(new MarkerOptions()
.position(temp)
.title("Ponto " + c.getDescricao())
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
marker.setTag("Ponto " + c.getDescricao());
}
}

我有一个听众给他，它显示一条消息，有 2 个选项，确认或取消：

@Override
public void onDialogPositiveClick(DialogFragment dialog) {
getSelectedPoint().setSnippet("Selected!");
getSelectedPoint().setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE));
}

和

@Override
public void onDialogNegativeClick(DialogFragment dialog) {
Toast.makeText(getBaseContext(), "Cancel the dialog", Toast.LENGTH_SHORT).show();
}

有人可以帮助我吗？我需要颜色保持 AZURE，而不是恢复为红色。

编辑1：当我再次单击标记时，颜色是正确的，AZURE。但是，当单击另一个位置时，颜色将恢复为 RED。

编辑2：代码

public class Navigator extends FragmentActivity
implements FragmentoDialogo.NoticeDialogListener, OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {      
private static Marker pontoSelecionado;    
public Marker getPontoSelecionado() {
return pontoSelecionado;
}
public void setPontoSelecionado(Marker pontoSelecionado) {
this.pontoSelecionado = pontoSelecionado;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this /* FragmentActivity */,
this /* OnConnectionFailedListener */)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.addApi(Places.GEO_DATA_API)
.addApi(Places.PLACE_DETECTION_API)
.build();
mGoogleApiClient.connect();
Bundle b = getIntent().getExtras();
pointsList = b.getParcelableArrayList("Points");
setContentView(R.layout.navigator_ac);
MapFragment mapFragment = (MapFragment) getFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
plotarPontosDeColeta();
plotarCaminhamento();
escutarCliqueMarcador();
// Turn on the My Location layer and the related control on the map.
updateLocationUI();
// Get the current location of the device and set the position of the map.
getDeviceLocation();
LatLng ponto1 = new LatLng(pointsList.get(1).getLat(), pointsList.get(1).getLng());
CameraPosition cameraPos = new CameraPosition.Builder().target(ponto1)
.zoom(45).bearing(20).tilt(80).build();
googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPos), null);
}
public void plotarPontosDeColeta(){
NumberFormat format = new DecimalFormat("0");
for (Coordinate c: pointsList) {
LatLng temp = new LatLng(c.getLat(), c.getLng());
Marker marker = mMap.addMarker(new MarkerOptions()
.position(temp)
.title("Ponto " + c.getDescricao())
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
marker.setTag("Ponto " + c.getDescricao());
}
}
private void plotarCaminhamento() {
NumberFormat format = new DecimalFormat("0");
ArrayList<Polyline> listaLinhas = new ArrayList<>();
final ArrayList<MarkerOptions> listaMarcadores = new ArrayList<>();
PolylineOptions lineOptions;
try {
for (int i=0; i<pointsList.size(); i++){
LatLng aux1 = new LatLng(pointsList.get(i).getLat(),pointsList.get(i).getLng());
LatLng aux2 = new LatLng(pointsList.get(i+1).getLat(),pointsList.get(i+1).getLng());
lineOptions = new PolylineOptions().clickable(true).add(aux1).add(aux2);
Polyline polyline = mMap.addPolyline(lineOptions);
polyline.setTag(i);
listaLinhas.add(polyline);
listaMarcadores.add(new MarkerOptions()
.position(PointsHandler.encontrarPontoMedio(aux1, aux2))
.alpha(0f)
.title(""+ format.format(pointsList.get(i).getDistanciaProximoPonto()) + "m"));
}
} catch (Exception e){
//TODO
}
mMap.setOnPolylineClickListener(new GoogleMap.OnPolylineClickListener(){
@Override
public void onPolylineClick(Polyline polyline)
{
int tag = (Integer) polyline.getTag();
mMap.addMarker(listaMarcadores.get(tag)).showInfoWindow();
}
});
}
public void escutarCliqueMarcador(){
mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
if (getPontoSelecionado() == null) {
setPontoSelecionado(marker);
Toast.makeText(getBaseContext(), "Clique novamente para confirmar!", Toast.LENGTH_SHORT).show();
return false;
}
if (getPontoSelecionado().getTag().equals(marker.getTag())) {
showDialog();
} else {
setPontoSelecionado(marker);
Toast.makeText(getBaseContext(), "Clique novamente para confirmar!", Toast.LENGTH_SHORT).show();
}
return false;
}
});
}
public void showDialog() {
DialogFragment dialog = new FragmentoDialogo();
dialog.show(getFragmentManager(), "FragmentoDialogo");
}
@Override
public void onDialogPositiveClick(DialogFragment dialog) {
getPontoSelecionado().setSnippet("Coleta efetuada");
getPontoSelecionado().setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE));
getPontoSelecionado().showInfoWindow();            
}
@Override
public void onDialogNegativeClick(DialogFragment dialog) {
Toast.makeText(getBaseContext(), "Ponto não confirmado", Toast.LENGTH_SHORT).show();
}
}

Answer 1

我自己解决了。

我创建了一个Coordinate向量作为类属性，从构造函数和我添加到该向量的plot()方法开始。出于某种原因，我正在使用不同的实例。