Android Google在“信息窗口"中以不同的值映射标记 [英] Android google maps markers with different values on Info Window

问题描述

我有一个带有很多标记的地图，并且我希望在每个标记中为信息窗口"自定义值.

I have a map with a lot of markers, and I want custom values for the Info Window in each marker.

用于添加标记:

final JSONArray stops = new File().getStops(lineId);
try {
    for (int i = 0; i < stops.length(); i++) {
        BitmapDescriptor stopMarkerIcon = new File().getStopMarkerIcon(color, Integer.parseInt(stops.getJSONObject(i).getString("sequence")));
        LatLng coordinate = new LatLng(Double.parseDouble(stops.getJSONObject(i).getString("lat")), Double.parseDouble(stops.getJSONObject(i).getString("lng")));
        MarkerOptions markerOptions = new MarkerOptions().icon(stopMarkerIcon).position(coordinate).anchor(.5f, .5f);
        googleMap.setInfoWindowAdapter(new StopsInfoWindow(i));
        googleMap.addMarker(markerOptions);
    }
} catch (JSONException e) { e.printStackTrace(); }

信息窗口适配器:

public class StopsInfoWindow implements GoogleMap.InfoWindowAdapter {

    private View view;
    private int i;

    public StopsInfoWindow(int i) {
        final LayoutInflater inflater = (LayoutInflater) Controller.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        view = inflater.inflate(R.layout.item_stop_marker_info, null);
        this.i = i;
    }

    @Override
    public View getInfoContents(Marker marker) {
        return null;
    }

    @Override
    public View getInfoWindow(final Marker marker) {
        TextView tvLat = (TextView) view.findViewById(R.id.tv_lat);
        TextView tvLng = (TextView) view.findViewById(R.id.tv_lng);
        tvLat.setText("Latitude:" + i);
        tvLng.setText("Longitude:" + i);

        return view;
    }
}

问题是当我单击任何标记时，所有标记都显示相同的值.在这种情况下，"i"是stops.length()-1;

The problem is when I click any marker, it shows with the same value for all. In this case "i" being the stops.length() - 1;

我认为问题出在这里

googleMap.setInfoWindowAdapter(new StopsInfoWindow(i));

每次添加标记(每次在for循环中迭代)时，我都会在地图上设置一个新的信息窗口.有什么方法可以将适配器添加到标记本身而不是地图?这样，我可以创建一个新的InfoWindow，并为每个标记提供自定义值.

Each time I add a marker (each time I iterate in the for loop) I am setting a new Info Window to the map. Is there any way to add the Adapter to the marker itself instead of the map? That way I could have a new InfoWindow with custom values for each marker.

推荐答案

使用HashMap

我不确定这是否是最佳解决方案，但它是否有效.基本上，我只是将标记添加到HashMap中，然后将此HashMap传递给我的自定义信息窗口"类.

I'm not sure if this is the best solution but it works. Basically I just added the marker into a HashMap and passed this HashMap to my Custom Info Window class.

添加标记:

HashMap<Marker, JSONObject> stopsMarkersInfo = new HashMap<>(); // created the HashMap
JSONArray stops = new File().getStops(lineId);
for (int i = 0; i < stops.length(); i++) {
    BitmapDescriptor stopMarkerIcon = new File().getStopMarkerIcon(color, Integer.parseInt(stops.getJSONObject(i).getString("sequence")));
    LatLng coordinate = new LatLng(Double.parseDouble(stops.getJSONObject(i).getString("lat")), Double.parseDouble(stops.getJSONObject(i).getString("lng")));
    MarkerOptions markerOptions = new MarkerOptions().icon(stopMarkerIcon).position(coordinate).anchor(.5f, .5f);
    Marker marker = googleMap.addMarker(markerOptions);
    stopsMarkersInfo.put(marker, stops.getJSONObject(i)); // added each marker and 
                                                          // his information to the HashMap
}
googleMap.setInfoWindowAdapter(new StopsInfoWindow(stopsMarkersInfo)); // passed the HashMap

信息窗口适配器:

public class StopsInfoWindow implements GoogleMap.InfoWindowAdapter {

    private HashMap<Marker, JSONObject> stopsMarkersInfo;
    private View view;

    public StopsInfoWindow(HashMap<Marker, JSONObject> stopsMarkersInfo) {
         this.stopsMarkersInfo = stopsMarkersInfo;
    }

    @Override
    public View getInfoContents(Marker marker) {
         return null;
    }

    @Override
    public View getInfoWindow(final Marker marker) {
        JSONObject stop = stopsMarkersInfo.get(marker);
        if (stop != null) {
            LayoutInflater inflater = (LayoutInflater) Controller.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = inflater.inflate(R.layout.item_stop_marker_info, null);

            TextView stopName = (TextView) view.findViewById(R.id.stop_name);
            stopName.setText(stop.getString("name"));

            TextView stopLine = (TextView) view.findViewById(R.id.stop_line);
            stopLine.setText(stop.getString("line"));
        }
        return view;
    } 
}

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