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    <pre><code>class myLocationOverlay extends com.google.android.maps.Overlay { private static final double defaultLatitude = Double.parseDouble("your_default_latitude"); private static final double defaultLongitude = Double.parseDouble("your_default_longitude"); private static final float defaultAccuracy = 250f; // or whatever you wish it to be Location currentLocation; // this should be already known private Paint accuracyPaint; private Point center; private Point left; private Drawable drawable; private int width; private int height; @Override public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) { super.draw(canvas, mapView, shadow); accuracyPaint = new Paint(); accuracyPaint.setAntiAlias(true); accuracyPaint.setStrokeWidth(2.0f); drawable = mapView.getContext().getResources().getDrawable(R.drawable.my_location_dot); width = drawable.getIntrinsicWidth(); height = drawable.getIntrinsicHeight(); center = new Point(); left = new Point(); double latitude; double longitude; float accuracy; Projection projection = mapView.getProjection(); if(currentLocation == null) { latitude = defaultLatitude; longitude = defaultLongitude; accuracy = defaultAccuracy; } else { latitude = currentLocation.getLatitude(); longitude = currentLocation.getLongitude(); accuracy = currentLocation.getAccuracy(); } float[] result = new float[1]; Location.distanceBetween(latitude, longitude, latitude, longitude + 1, result); float longitudeLineDistance = result[0]; GeoPoint leftGeo = new GeoPoint((int)(latitude * 1E6), (int)((longitude - accuracy / longitudeLineDistance) * 1E6)); projection.toPixels(leftGeo, left); projection.toPixels(myLocationPoint, center); int radius = center.x - left.x; accuracyPaint.setColor(0xff6666ff); accuracyPaint.setStyle(Style.STROKE); canvas.drawCircle(center.x, center.y, radius, accuracyPaint); accuracyPaint.setColor(0x186666ff); accuracyPaint.setStyle(Style.FILL); canvas.drawCircle(center.x, center.y, radius, accuracyPaint); drawable.setBounds(center.x - width / 2, center.y - height / 2, center.x + width / 2, center.y + height / 2); drawable.draw(canvas); return true; } } </code></pre> <p>Change the R.drawable.<strong>my_location_dot</strong> with whatever you use as location marker and see that the currentLocation is known</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

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