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POdisplaying photo thumbnails on map
 

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    <p>is there any good sample code on this? (displaying photo thumbnails on map)</p> <p>Below is the code that i've tried out by myself, but it just doesn't work: If the thumbnail path is found, set it as marker of the overlayitem, else use default Marker.</p> <p>The problem is that only items with defaultMarker are shown. And over 100+ photos, only 1 photo's thumbnail path is found, it seems that the way I retrieve thumbnail is somehow not correct.</p> <p>If you don't mind, it is quite verbose. Thanks!</p> <pre><code>Drawable drawable = this.getResources().getDrawable(R.drawable.androidmarker); PhotoOverlay itemizedoverlay = new PhotoOverlay(drawable, this); String selection = MediaStore.Images.ImageColumns.LATITUDE + " is not null"; Cursor c = this.managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, selection, null, null); while ( c.moveToNext()){ int longitude = (int) (c.getDouble(c.getColumnIndex(MediaStore.Images.ImageColumns.LONGITUDE)) * 1e6); int latitude = (int) ( c.getDouble(c.getColumnIndex(MediaStore.Images.ImageColumns.LATITUDE))* 1e6); String title = c.getString(c.getColumnIndex(MediaStore.Images.ImageColumns.TITLE)); String description = c.getString(c.getColumnIndex(MediaStore.Images.ImageColumns.DESCRIPTION)); long imgId = c.getLong(c.getColumnIndex(MediaStore.Images.ImageColumns._ID)); long thumbId = c.getLong(c.getColumnIndex(MediaStore.Images.ImageColumns.MINI_THUMB_MAGIC)); GeoPoint point = new GeoPoint(latitude, longitude); OverlayItem overlayitem = new OverlayItem(point, title, description); //Cursor ct = Thumbnails.queryMiniThumbnail(this.getContentResolver(), imgId, Thumbnails.MICRO_KIND, null); String[] args = new String[]{String.valueOf(thumbId)}; Cursor ct = managedQuery(Thumbnails.EXTERNAL_CONTENT_URI, null, Thumbnails._ID + "= ?", args, null); if( ct.moveToFirst() ){ String path = ct.getString(ct.getColumnIndex(Thumbnails.DATA)); BitmapDrawable d = new BitmapDrawable(this.getResources(), path); itemizedoverlay.addOverlay(overlayitem, d); } else { itemizedoverlay.addOverlay(overlayitem, null); } } c.close(); overlays.add(itemizedoverlay); </code></pre> <p>PhotoOverlay.addItem()</p> <pre><code>public void addOverlay(OverlayItem i, Drawable marker){ if( marker != null ){ i.setMarker(boundCenterBottom(marker)); } mOverlays.add(i); populate(); } </code></pre>
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