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我为我的 android 编写了一个显示谷歌地图和一些 wi-fi 地点的应用程序，但它没有正确显示覆盖。它只是在大西洋中部的某个地方显示了一个覆盖标记，并且与我的标记没有任何相似之处。也许问题出在我设法添加 GeoPoint 的方式上，但我试图更改程序的某些部分，它现在在海洋中的那个奇怪点上运行。例如，我从 GeoPoint 删除了这个标志，它只是将那个位置移到了离我的位置更近但仍然很远的阿拉伯。它应该在黑山（位于意大利附近的亚得里亚海沿岸）显示标记。如果您知道任何有用的信息，请查看此代码并回答。

package rs.iz.stevy.wifi;

import java.util.List;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;

import android.graphics.drawable.Drawable;
import android.os.Bundle;


public class WiFiKupacicaActivity extends MapActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    MapView mapa= (MapView) findViewById(R.id.Mapa1);
    mapa.setBuiltInZoomControls(true);
    mapa.setSatellite(true);

List<Overlay> mapOverlays = mapa.getOverlays();
Drawable drawable = this.getResources().getDrawable(R.drawable.green);//dodaj neki marker
MapOverlay itemizedoverlay = new  MapOverlay(drawable, this);

GeoPoint point = new GeoPoint(19249269,-42444210);
OverlayItem overlayitem = new OverlayItem(point, "Krug", "ESSID:nije utvrdjeno Šifra:ima");

GeoPoint point2 = new GeoPoint(19263582,-42441818);
OverlayItem overlayitem2 = new OverlayItem(point2, "Carine 1", "ESSID:Carine Šifra:nema");

GeoPoint point3= new GeoPoint(19261555,-42442169);
OverlayItem overlayitem3 = new OverlayItem(point3, "Sejdefa", "ESSID:Sejdefa Šifra:ima");

GeoPoint point4= new GeoPoint(19250805,-42440254);
OverlayItem overlayitem4 = new OverlayItem(point4, "Unico", "ESSID:Unico Šifra:ima");

GeoPoint point5= new GeoPoint(19247810,-42441559);
OverlayItem overlayitem5 = new OverlayItem(point5,"Carine 2","ESSID:Carine Šfira:nema");

GeoPoint point6= new GeoPoint(19267099,-42433342);
OverlayItem overlayitem6 = new OverlayItem(point6,"Forma", "ESSID:Forma Šifra:ima");

GeoPoint point7= new GeoPoint(19247948,-42443596);
OverlayItem overlayitem7 = new OverlayItem(point7,"Maxim Caffe", "ESSID:nije utvrdjeno Šifra:ima");

GeoPoint point8= new GeoPoint(19259390,-42449978);
OverlayItem overlayitem8 = new OverlayItem(point8,"Me Gusta","ESSID:nije utvrdjeno Šifra:nema");

GeoPoint point9= new GeoPoint(19263691,-42445312);
OverlayItem overlayitem9 = new OverlayItem(point9,"Pub 013","ESSID:nije utvrdjeno Šifra:nema");

GeoPoint point10= new GeoPoint(19259972,-42441254);
OverlayItem overlayitem10 = new OverlayItem(point10,"Alan Ford","ESSID:nije utvrdjeno Šifra:ima");

GeoPoint point11= new GeoPoint(19263325,-42446926);
OverlayItem overlayitem11 = new OverlayItem(point11,"MNNews- Gimnazija","ESSID:nije utvrdjeno Šifra:nema/login preko web-a");

GeoPoint point12= new GeoPoint(19262810,-42441257);
OverlayItem overlayitem12 = new OverlayItem(point12,"MNNews- Trg Republike","ESSID:nije utvrdjeno Šifra:nema/login preko web-a");

GeoPoint point13= new GeoPoint(19246502,-42442612);
OverlayItem overlayitem13 = new OverlayItem(point13,"MNNews- Rimski trg","ESSID:nije utvrdjeno Šifra:nema/login preko web-a");


itemizedoverlay.addOverlay(overlayitem);
itemizedoverlay.addOverlay(overlayitem2);
itemizedoverlay.addOverlay(overlayitem3);
itemizedoverlay.addOverlay(overlayitem4);
itemizedoverlay.addOverlay(overlayitem5);
itemizedoverlay.addOverlay(overlayitem6);
itemizedoverlay.addOverlay(overlayitem7);
itemizedoverlay.addOverlay(overlayitem8);
itemizedoverlay.addOverlay(overlayitem9);
itemizedoverlay.addOverlay(overlayitem10);
itemizedoverlay.addOverlay(overlayitem11);
itemizedoverlay.addOverlay(overlayitem12);
itemizedoverlay.addOverlay(overlayitem13);

mapOverlays.add(itemizedoverlay);

}

@Override
protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;
}

编辑：这是覆盖类的代码：

package rs.iz.stevy.wifi;
import java.util.ArrayList;
import android.graphics.drawable.Drawable;
import android.app.AlertDialog;
import android.content.Context;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;

public class MapOverlay extends ItemizedOverlay {


private ArrayList<OverlayItem>mOverlays= new ArrayList<OverlayItem>();
private Context mContext;


public MapOverlay(Drawable defaultMarker, Context context) {
    super(boundCenterBottom(defaultMarker));
    mContext=context;
}
public void addOverlay(OverlayItem overlay) {
    mOverlays.add(overlay);
    populate();

}

@Override
protected OverlayItem createItem(int i) {
    return mOverlays.get(i); }

@Override
public int size() {
    return mOverlays.size();
}

//itemizedoverlay.addOverlay(overlayitem);
//mapOverlays.add(itemizedoverlay);

//@Override
@Override
protected boolean onTap(int index) {
  OverlayItem item = mOverlays.get(index);
  AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
  dialog.setTitle(item.getTitle());
  dialog.setMessage(item.getSnippet());
  dialog.show();
  return true;
}

}
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1 回答 1

0

我改变了坐标的位置，这导致了这个错误。例如：

GeoPoint point = new GeoPoint(19249269,-42444210);
OverlayItem overlayitem = new OverlayItem(point, "Krug", "ESSID:nije utvrdjeno Šifra:ima");

相反，只需将 19249269 更改为 42444210

GeoPoint point = new GeoPoint(42444210,19249269);
OverlayItem overlayitem = new OverlayItem(point, "Krug", "ESSID:nije utvrdjeno Šifra:ima");
于 2011-12-03T11:48:26.587 回答