@Vavid
Yep, you're absolutely right about the constructor. The relevent
Context wasn't passed as a parameter to new HelloItemized objet.
Something is not clear to me in this tutorial: what is the Context I
should pass to the HelloItemized objet? Tutorial URL:
http://developer.android.com/resources/tutorials/views/hello-mapview.html
I tried the following (but this did nothing and my android marker has
disappeared...):
1 ) File HelloGoogleMaps.java:
-------------------------------------------------
package com.tests;
import java.util.List;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
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;
public class HelloGoogleMaps extends MapActivity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
List<Overlay> mapOverlays = mapView.getOverlays();
Drawable drawable =
this.getResources().getDrawable(R.drawable.androidmarker);
HelloItemizedOverlay itemizedoverlay = new
HelloItemizedOverlay(drawable,this);
GeoPoint point = new GeoPoint(19240000,-99120000);
OverlayItem overlayitem = new OverlayItem(point, "Hola,
Mundo!", "I'm in Mexico City!");
itemizedoverlay.addOverlay(overlayitem);
mapOverlays.add(itemizedoverlay);
}
@Override
protected boolean isRouteDisplayed()
{
return false;
}
}
2 ) File : HelloItemizedOverlay.java :
----------------------------------------------------
package com.tests;
import java.util.ArrayList;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.graphics.drawable.Drawable;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
public class HelloItemizedOverlay extends ItemizedOverlay
{
private ArrayList<OverlayItem> mOverlays = new
ArrayList<OverlayItem>();
private Context mContext;
public HelloItemizedOverlay(Drawable defaultMarker, Context context)
{
super(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();
}
@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;
}
}
Help would be appreciated...
On 26 fév, 05:52, Vadid Valiulla <[email protected]> wrote:
> Actually your problem is that the Dialog is not getting the correct
> context... Coz the constructor u initialized doesnt have the context
> passed to it... Check that and i suppose your problem should get
> solved...
>
> sorry 4 sending another message i forgot to mention the reason i gave
> the re-defined constructor...
>
> Take care...
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