Question

在我的应用中，我希望用户在Google地图中提供他们想要的内容。所以，首先我创建了一个带有按钮的活动，供用户打开谷歌地图：

    private Button.OnClickListener opengmap = new Button.OnClickListener() {
        public void onClick(View v) {
        isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (!isGPSEnabled && !isNetworkEnabled) {
            Toast.makeText(v.getContext(), v.getContext().getString(R.string.T1001_NoGPSDetection),  Toast.LENGTH_LONG).show();                 
        } else {
            strprovider = locationManager.getBestProvider(criteria, false);
            location = locationManager.getLastKnownLocation(strprovider);
        }

        **gmap = new GM001MapForAddress(v.getContext(), location.getLatitude(), location.getLongitude(), R.id.map);
        gmap.initialize();**

        }
    };

然后，我有这个GM001MapForAddress来初始化谷歌地图，打算有一个可拖动的标记：

public class GM001MapForAddress {
public Context context;
public GoogleMap googleMap;
public MarkerOptions markeroption;
public Marker marker;
public CameraUpdate center;


public Double latitude, longitude;
public Integer id;
public Activity activity;

public GM001MapForAddress(Context context, Double latitude, Double longitude, Integer id) {
    this.context = context;
    this.latitude = latitude;
    this.longitude = longitude;
    this.id = id;
}

public void initialize() {

    activity = (Activity) context;
    googleMap = ((MapFragment) activity.getFragmentManager().findFragmentById(id)).getMap();
    googleMap.setOnMapClickListener(clickmap);
    googleMap.setOnMarkerDragListener(dragmarker);
    //googleMap.setMyLocationEnabled(true);
    LatLng latlng = new LatLng(latitude, longitude);
    marker = googleMap.addMarker(new MarkerOptions().position(latlng).draggable(true));
    if (marker.isDraggable()) {
        System.out.println("HAHA " + latlng);
    }
    marker.setDraggable(true);
    googleMap.setOnMarkerDragListener(dragmarker);
    center= CameraUpdateFactory.newLatLng(new LatLng(latitude, longitude));
    CameraUpdate zoom=CameraUpdateFactory.zoomTo(15);
    googleMap.moveCamera(center);
    googleMap.animateCamera(zoom);
    googleMap.getFocusedBuilding();

}

public OnMarkerDragListener dragmarker = new OnMarkerDragListener() {

    @Override
    public void onMarkerDrag(Marker marker) {
        // TODO Auto-generated method stub
        System.out.println("here1!!");

    }

    @Override
    public void onMarkerDragEnd(Marker arg0) {
        // TODO Auto-generated method stub
        System.out.println("here2!!");
        LatLng dragPosition = arg0.getPosition();
        double dragLat = dragPosition.latitude;
        double dragLong = dragPosition.longitude;
        System.out.println("halatlng: " + dragLat + " " + dragLong);
        Log.i("info", "on drag end :" + dragLat + " dragLong :" + dragLong);
        arg0.setPosition(dragPosition);
        googleMap.addMarker(new MarkerOptions().position(dragPosition).draggable(true));

    }

    @Override
    public void onMarkerDragStart(Marker marker) {
        // TODO Auto-generated method stub
        System.out.println("here3!!");

    }
};

public OnMapClickListener clickmap = new OnMapClickListener() {

    @Override
    public void onMapClick(LatLng point) {
        // TODO Auto-generated method stub
        googleMap.animateCamera(CameraUpdateFactory.newLatLng(point));          
        System.out.println("latdflng: " + point);
    }
};

我的clickmap监听器工作正常，但拖拉机监听器永远不会工作。我整个周末都在研究这个问题（我在亚洲）。所以，希望有人可以帮我解决这个问题。

提前致谢。

Answer 1

要启用拖动模式，您需要长按标记，然后按住拖动。

如果标记很小，如果你的手指像我一样笨拙，可能很难点击正确的点。

标记在Google Maps API v2上无法拖动

1 个答案: