AddressOverlay.java

package com.oreilly.android.taskmanager.views;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.location.Address;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.Projection;

public class AddressOverlay extends Overlay {

	private static final int CONTAINER_RADIUS				= 4;
	private static final int CONTAINER_SHADOW_OFFSET		= 1;
	
	private Address address;
	private GeoPoint geopoint;
	
	public AddressOverlay(Address address) {
		super();
		assert(null != address);
		this.setAddress(address);
		Double convertedLongitude = address.getLongitude() * 1E6;
		Double convertedLatitude = address.getLatitude() * 1E6;

		setGeopoint(new GeoPoint(
				convertedLatitude.intValue(),
				convertedLongitude.intValue()));
	}

	@Override
	public void draw(Canvas canvas, MapView mapView, boolean shadow) {
		super.draw(canvas, mapView, shadow);
    	Point locationPoint = new Point();
    	Projection projection = mapView.getProjection();
    	projection.toPixels(getGeopoint(), locationPoint);
    	Paint containerPaint = new Paint();
		containerPaint.setAntiAlias(true);
    	int containerX = locationPoint.x;
    	int containerY = locationPoint.y;
		if (shadow) {
			containerX += CONTAINER_SHADOW_OFFSET;
			containerY += CONTAINER_SHADOW_OFFSET;
			containerPaint.setARGB(90, 0, 0, 0);
            canvas.drawCircle(containerX, containerY, CONTAINER_RADIUS, containerPaint);
		} else {
			containerPaint.setColor(Color.RED);
            canvas.drawCircle(containerX, containerY, CONTAINER_RADIUS, containerPaint);
		}
	}

	public void setAddress(Address address) {
		this.address = address;
	}

	public Address getAddress() {
		return address;
	}

	public void setGeopoint(GeoPoint geopoint) {
		this.geopoint = geopoint;
	}

	public GeoPoint getGeopoint() {
		return geopoint;
	}

}