Android 在openstreetmap中更改位置并单击放置标记

Android 在openstreetmap中更改位置并单击放置标记,android,openstreetmap,marker,Android,Openstreetmap,Marker,我是新打开街道地图。我想把标记放在我点击的地图上。我还想删除上一个标记。请帮帮我。 提前谢谢。这是我的密码 Overlay touchOverlay = new Overlay(this) { ItemizedIconOverlay<OverlayItem> anotherItemizedIconOverlay = null; @Override protected void draw(Canvas arg0, MapView arg1, boolean a

我是新打开街道地图。我想把标记放在我点击的地图上。我还想删除上一个标记。请帮帮我。 提前谢谢。这是我的密码

Overlay touchOverlay = new Overlay(this) {
    ItemizedIconOverlay<OverlayItem> anotherItemizedIconOverlay = null;

    @Override
    protected void draw(Canvas arg0, MapView arg1, boolean arg2) {

    }

    @Override
    public boolean onSingleTapConfirmed(final MotionEvent e,
            final MapView mapView) {
        Projection proj = mapView.getProjection();
        GeoPoint loc = (GeoPoint) proj.fromPixels((int) e.getX(),
                (int) e.getY());
        String longitude = Double
                .toString(((double) loc.getLongitudeE6()) / 1000000);
        String latitude = Double
                .toString(((double) loc.getLatitudeE6()) / 1000000);
        ArrayList<OverlayItem> overlayArray = new ArrayList<OverlayItem>();
        OverlayItem mapItem = new OverlayItem("", "", new GeoPoint(
                (((double) loc.getLatitudeE6()) / 1000000),
                (((double) loc.getLongitudeE6()) / 1000000)));
        Drawable marker = null;
        mapItem.setMarker(marker);
        overlayArray.add(mapItem);
        if (anotherItemizedIconOverlay == null) {
            anotherItemizedIconOverlay = new ItemizedIconOverlay<OverlayItem>(
                    getApplicationContext(), overlayArray, null);
            mapView.getOverlays().add(anotherItemizedIconOverlay);
            mapView.invalidate();
        } else {
            mapView.getOverlays().remove(anotherItemizedIconOverlay);
            mapView.invalidate();
            anotherItemizedIconOverlay = new ItemizedIconOverlay<OverlayItem>(
                    getApplicationContext(), overlayArray, null);
            mapView.getOverlays().add(anotherItemizedIconOverlay);
        }

        return true;
    }
};
Overlay touchOverlay=新覆盖(此){
itemizedictionoverlay另一个itemizedictionoverlay=null;
@凌驾
受保护的空绘图(画布arg0、地图视图arg1、布尔值arg2){
}
@凌驾
公共布尔值OnSingleTapConfiged(最终运动事件e,
最终地图视图(地图视图){
Projection proj=mapView.getProjection();
GeoPoint loc=(GeoPoint)proj.fromPixels((int)e.getX(),
(int)e.getY();
字符串经度=双精度
.toString(((双)loc.getLongitudeE6())/1000000);
字符串纬度=双
.toString(((双)loc.getLatitudeE6())/1000000);
ArrayList overlayArray=新的ArrayList();
OverlayItem mapItem=新的OverlayItem(“,”,新的地质点(
((双精度)loc.getLatitudeE6())/1000000),
((双)loc.getLongitudeE6())/1000000));
可绘制标记=null;
mapItem.setMarker(marker);
overlayArray.add(mapItem);
if(anotheritemizedictionoverlay==null){
anotheritemizedictionoverlay=新的itemizedictionoverlay(
getApplicationContext(),overlayArray,null);
mapView.getOverlays().add(AnotheritemizedEdiconOverlay);
mapView.invalidate();
}否则{
mapView.getOverlays().remove(另一个ItemizedEdiconOverlay);
mapView.invalidate();
anotheritemizedictionoverlay=新的itemizedictionoverlay(
getApplicationContext(),overlayArray,null);
mapView.getOverlays().add(AnotheritemizedEdiconOverlay);
}
返回true;
}
};

我终于找到了这个问题的解决方案。这是我的答案

@Override
    public boolean onSingleTapConfirmed(MotionEvent e, MapView mapView) {

        Projection proj = mapView.getProjection();
        p = (GeoPoint) proj.fromPixels((int) e.getX(), (int) e.getY());
         proj = mapView.getProjection();
         loc = (GeoPoint) proj.fromPixels((int) e.getX(), (int) e.getY());
         String longitude = Double
         .toString(((double) loc.getLongitudeE6()) / 1000000);
         String latitude = Double
         .toString(((double) loc.getLatitudeE6()) / 1000000);
         Toast toast = Toast.makeText(getApplicationContext(),
         "Longitude: "
         + longitude + " Latitude: " + latitude, Toast.LENGTH_SHORT);
         toast.show();
        return true;
    }

private void addLocation(double lat, double lng) {
    // ---Add a location marker---

    p = new GeoPoint((int) (lat * 1E6), (int) (lng * 1E6));

    Drawable marker = getResources().getDrawable(
            android.R.drawable.star_big_on);

    int markerWidth = marker.getIntrinsicWidth();
    int markerHeight = marker.getIntrinsicHeight();

    marker.setBounds(0, markerHeight, markerWidth, 0);

    ResourceProxy resourceProxy = new DefaultResourceProxyImpl(
            getApplicationContext());

    myItemizedOverlay = new MyItemizedOverlay(marker, resourceProxy);

    List<Overlay> listOfOverlays = mapView.getOverlays();
    listOfOverlays.clear();
    listOfOverlays.add(myItemizedOverlay);

    mapView.invalidate();
}
@覆盖
公共布尔值OnSingleTapConfiged(MotionEvent e,MapView MapView){
Projection proj=mapView.getProjection();
p=(地理点)项目从像素((int)e.getX(),(int)e.getY());
proj=mapView.getProjection();
loc=(地理点)proj.fromPixels((int)e.getX(),(int)e.getY());
字符串经度=双精度
.toString(((双)loc.getLongitudeE6())/1000000);
字符串纬度=双
.toString(((双)loc.getLatitudeE6())/1000000);
Toast Toast=Toast.makeText(getApplicationContext(),
“经度:”
+经度+“纬度:”+纬度,土司。长度(短);
toast.show();
返回true;
}
专用位置(双lat、双lng){
//---添加位置标记---
p=新地质点((内部)(纬度*1E6),(内部)(液化天然气*1E6));
可绘制标记=getResources().getDrawable(
android.R.drawable.star\u big\u on);
int-markerWidth=marker.getIntrinsicWidth();
int-markerHeight=marker.getIntrinsicHeight();
标记.立根(0,标记高度,标记宽度,0);
ResourceProxy ResourceProxy=新的DefaultResourceProxyImpl(
getApplicationContext());
myItemizedOverlay=新的myItemizedOverlay(标记,resourceProxy);
List ListoForLays=mapView.getOverlays();
listOfOverlays.clear();
添加(myItemizedOverlay);
mapView.invalidate();
}