Question

I am new to Android development and I have a problem that I have been working on for hours with no success. I want to create a cross-hair in the center of my Google Map that stays in the center even when the map is panned. I have a .png image of the cross-hair in my drawable directory. Additionally, I have a MapView that displays the Google Map with several markers. What is the best way to approach this problem?

Answer 1

public class CrossHairsOverlay extends Overlay {
    public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {
        super.draw(canvas, mapView, shadow);
        GeoPoint centerGp = mapView.getMapCenter();
        Projection projection = mapView.getProjection();
        Point centerPoint = projection.toPixels(centerGp, null);
        Paint p = new Paint();
        Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.crosshairs_dial);
        canvas.drawBitmap(bmp, centerPoint.x, centerPoint.y, p);
        return true;
    }
}