Multiple overlay items in android
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by Bostjan
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Published on 2010-03-19T18:28:52Z
Indexed on
2010/03/19
18:31 UTC
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I seem to be having a problem with using ItemizedOverlay and OveralyItems in it.
I can get the first overlayItem to appear on the map but not any items after that.
Code sample is on: http://www.anddev.org/multiple_overlay_items-t12171.html
Quick overview here:
public class Markers extends ItemizedOverlay {
private Context ctx;
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
public Markers(Drawable defaultMarker, Context cont) {
super(boundCenterBottom(defaultMarker));
this.ctx = cont;
// TODO Auto-generated constructor stub
}
@Override
protected OverlayItem createItem(int i) {
// TODO Auto-generated method stub
return mOverlays.get(i);
}
@Override
public boolean onTap(GeoPoint p, MapView mapView) {
// TODO Auto-generated method stub
return super.onTap(p, mapView);
}
@Override
protected boolean onTap(int index) {
// TODO Auto-generated method stub
Toast.makeText(this.ctx, mOverlays.get(index).getTitle().toString()+", Latitude: "+mOverlays.get(index).getPoint().getLatitudeE6(), Toast.LENGTH_SHORT).show();
return super.onTap(index);
}
@Override
public int size() {
// TODO Auto-generated method stub
return mOverlays.size();
}
public void addOverlay(OverlayItem item) {
mOverlays.add(item);
setLastFocusedIndex(-1);
populate();
}
public void clear() {
mOverlays.clear();
setLastFocusedIndex(-1);
populate();
}}
Markers usersMarker = new Markers(user,overview.this); GeoPoint p = new GeoPoint((int) (lat * 1E6),(int) (lon * 1E6)); OverlayItem item = new OverlayItem(p,userData[0],userData[3]); item.setMarker(this.user); usersMarker.addOverlay(item);
The lines after the class are just samples of how it's used
the first marker shows up on the map but if I add any more they don't show up? Is there a problem with the populate() method? I tried calling it manually after adding all markers but it still didn't help. Please, if you have any idea what could be wrong, say so.
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