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POHow to remove an ItemOverlay on touch and add another on touch?
 

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  1. POHow to remove an ItemOverlay on touch and add another on touch?
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    <p>This is MapOverlay:</p> <pre><code>class MapOverlay extends com.google.android.maps.Overlay { @Override public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) { return true; } @Override public boolean onTouchEvent(MotionEvent event, MapView mapView) { //---when user lifts his finger--- if (event.getAction() == 1) { GeoPoint p = mapView.getProjection().fromPixels( (int) event.getX(), (int) event.getY()); List&lt;Overlay&gt; mapOverlays = mapView.getOverlays(); Drawable drawable = getResources().getDrawable(R.drawable.splash_logo); ItemizedOverlay itemizedoverlay = new ItemizedOverlay(drawable, getApplicationContext()); OverlayItem overlayitem = new OverlayItem(p, "I'm in LA!"); itemizedoverlay.addOverlay(overlayitem); mapOverlays.add(itemizedoverlay); mapView.invalidate(); Geocoder geoCoder = new Geocoder( getBaseContext(), Locale.getDefault()); try { List&lt;Address&gt; addresses = geoCoder.getFromLocation( p.getLatitudeE6() / 1E6, p.getLongitudeE6() / 1E6, 1); String add = ""; if (addresses.size() &gt; 0) { for (int i=0; i&lt;addresses.get(0).getMaxAddressLineIndex(); i++) add += addresses.get(0).getAddressLine(i) + "\n"; } //Toast.makeText(getBaseContext(), add, Toast.LENGTH_SHORT).show(); addr = add; } catch (IOException e) { e.printStackTrace(); } return true; } else return false; } } </code></pre> <p>This is ItemizedOverlay:</p> <pre><code>class ItemizedOverlay extends com.google.android.maps.ItemizedOverlay&lt;OverlayItem&gt;{ private ArrayList&lt;OverlayItem&gt; mOverlays = new ArrayList&lt;OverlayItem&gt;(); private Context mContext; public ItemizedOverlay(Drawable defaultMarker) { super(boundCenterBottom(defaultMarker)); // TODO Auto-generated constructor stub } public ItemizedOverlay(Drawable defaultMarker, Context context) { super(boundCenterBottom(defaultMarker)); mContext = context; } @Override protected OverlayItem createItem(int i) { return mOverlays.get(i); } @Override public int size() { return mOverlays.size(); } public void addOverlay(OverlayItem overlay) { mOverlays.add(overlay); populate(); } public void removeOverlay(OverlayItem overlay) { mOverlays.remove(overlay); populate(); } public void clear() { mOverlays.clear(); populate(); } @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; } } </code></pre> <p>I'm able to add more than one item overlay with this but not able to call clear so that as to remove the itemziedoverylay item. </p> <p>What I want to do is this: When I touch on a particular point of the map, the previous itemized overlays should be deleted and a new one at that point should be created. I know I've to call clear() but not able to figure out where exactly should I do it. </p>
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