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I doing building a appplication direction from this point to that point on map google. My code run success, but when i zoom in map, draw line direction on map is lost. When zoom out map, my line draw appear. Can you help me!
this source code draw line between two point!
class MyOverLay extends Overlay {
private final List<GeoPoint> points;
private boolean drawStartEnd;
private int pathColor;
public MyOverLay(List<GeoPoint> pointToDraw) {
// TODO Auto-generated constructor stub
this(pointToDraw, Color.BLUE, true);
}
public MyOverLay(List<GeoPoint> points, int pathColor,
boolean drawStartEnd) {
this.points = points;
this.pathColor = pathColor;
this.drawStartEnd = drawStartEnd;
}
private void drawOval(Canvas canvas, Paint paint, Point point) {
Paint ovalPaint = new Paint(paint);
ovalPaint.setStyle(Paint.Style.FILL_AND_STROKE);
ovalPaint.setStrokeWidth(3);
ovalPaint.setColor(Color.BLUE);
int _radius = 7;
RectF oval = new RectF(point.x - _radius, point.y - _radius,
point.x + _radius, point.y + _radius);
canvas.drawOval(oval, ovalPaint);
}
public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
long when) {
Projection projection = mapView.getProjection();
if (shadow == false && points != null) {
Point startPoint = null, endPoint = null;
Path path = new Path();
// We are creating the path
for (int i = 0; i < points.size(); i++) {
GeoPoint gPointA = points.get(i);
Point pointA = new Point();
projection.toPixels(gPointA, pointA);
if (i == 0) { // This is the start point
startPoint = pointA;
path.moveTo(pointA.x, pointA.y);
} else {
if (i == points.size() - 1)// This is the end point
endPoint = pointA;
path.lineTo(pointA.x, pointA.y);
}
}
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(pathColor);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(8);
paint.setAlpha(100);
if (getDrawStartEnd()) {
if (startPoint != null) {
drawOval(canvas, paint, startPoint);
}
if (endPoint != null) {
drawOval(canvas, paint, endPoint);
}
}
if (!path.isEmpty())
canvas.drawPath(path, paint);
}
return super.draw(canvas, mapView, shadow, when);
}
public boolean getDrawStartEnd() {
return drawStartEnd;
}
public void setDrawStartEnd(boolean markStartEnd) {
drawStartEnd = markStartEnd;
}
}
I am implementing an android application for Map activity.
I am using Location listener for getting location updates. After updating location i am saving those updated latitude and longitude values in database.
I am able draw Route path From Source to destination using source latitude, longitude and destination latitude, longitude values. But using multiple latitude and longitude values of database at a time i want to draw the route path. I am using my RoutePath.java class to draw the route path for multiple latitudes and longitudes.Using those list of latitudes and longitudes i am able to draw the path, but it shows point to point stright line not shows the route path. See the below image...
If you observe carefully some points are on the route and some points are outside of route path. See again below image with full zooming...
Please help me if anyone knows the solution for this problem...
RoutePath.java:
public class RoutePath extends Overlay {
private int _pathColor;
private final List<GeoPoint> _points;
private boolean _drawStartEnd;
public RoutePath(List<GeoPoint> points) {
this(points, Color.RED, true);
}
public RoutePath(List<GeoPoint> points, int pathColor,
boolean drawStartEnd) {
_points = points;
_pathColor = pathColor;
_drawStartEnd = drawStartEnd;
}
private void drawOval(Canvas canvas, Paint paint, Point point) {
Paint ovalPaint = new Paint(paint);
ovalPaint.setStyle(Paint.Style.FILL_AND_STROKE);
ovalPaint.setStrokeWidth(2);
int _radius = 6;
RectF oval = new RectF(point.x - _radius, point.y - _radius, point.x
+ _radius, point.y + _radius);
canvas.drawOval(oval, ovalPaint);
}
public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
long when) {
Projection projection = mapView.getProjection();
if (shadow == false && _points != null) {
Point startPoint = null, endPoint = null;
Path path = new Path();
// We are creating the path
for (int i = 0; i < _points.size(); i++) {
GeoPoint gPointA = _points.get(i);
Point pointA = new Point();
projection.toPixels(gPointA, pointA);
if (i == 0) { // This is the start point
startPoint = pointA;
path.moveTo(pointA.x, pointA.y);
} else {
if (i == _points.size() - 1)// This is the end point
endPoint = pointA;
path.lineTo(pointA.x, pointA.y);
}
}
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(_pathColor);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(5);
paint.setAlpha(90);
if (getDrawStartEnd()) {
if (startPoint != null) {
drawOval(canvas, paint, startPoint);
}
if (endPoint != null) {
drawOval(canvas, paint, endPoint);
}
}
if (!path.isEmpty())
canvas.drawPath(path, paint);
}
return super.draw(canvas, mapView, shadow, when);
}
public boolean getDrawStartEnd() {
return _drawStartEnd;
}
public void setDrawStartEnd(boolean markStartEnd) {
_drawStartEnd = markStartEnd;
}
}
You got Straight line because the the GeoPoints are like that only..... means if you have a complete route paths then it will show according to your Geopoints....It all depends on GeoPoints.!
I need to draw shapes just like those you would create with custom maps on Google Maps, using Android's MapView.
In other words, if I draw a shape on the map, when I zoom out it should shrink, covering the same area of the map regardless of the zoom level.
Example following the Android Reference:
#Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when)
{
super.draw(canvas, mapView, shadow);
//---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(p, screenPts);
Paint boxPaint = new Paint();
boxPaint.setColor(android.graphics.Color.WHITE);
boxPaint.setStyle(Paint.Style.FILL);
boxPaint.setAlpha(140);
canvas.drawCircle(screenPts.x, screenPts.y, 20, boxPaint);
return true;
}
This shows a white circle on the map, but if you zoom out, the circle is the same size. Perhaps using canvas is not right approach?
I need something like how Google Maps highlights neighborhoods or cities:
Any ideas? Thanks in advance!
I had the same problem myself, here's a full solution with demo locations:
import java.util.*;
import android.graphics.*;
import android.graphics.Paint.Style;
import android.graphics.Region.Op;
import android.os.Bundle;
import com.google.android.maps.*;
public class ShapeOverlayTest extends MapActivity {
private MapView m_map;
#Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
m_map = (MapView) findViewById(R.id.mapview);
m_map.displayZoomControls(true);
m_map.setBuiltInZoomControls(true);
}
#Override
protected void onStart() {
super.onStart();
Loc[][] areas = {
{
new Loc(51.51695436113811, -0.28686325139653757),
new Loc(51.5268179962453, -0.28118722558738923),
new Loc(51.526498459594215, -0.27779666308279755),
new Loc(51.52521530775356, -0.26943974607777654),
new Loc(51.52292555645698, -0.25813738590178786),
new Loc(51.52054465991048, -0.2498381618983569),
new Loc(51.51012230470141, -0.24509233633017083),
new Loc(51.50884762913046, -0.24465130560570497),
new Loc(51.50732063336974, -0.2441767643132881),
new Loc(51.50431624597833, -0.24473900326760137),
new Loc(51.49756328092904, -0.2714528238165076),
new Loc(51.50092541797557, -0.28360267232347336),
new Loc(51.50205958485736, -0.28490018935582045),
new Loc(51.50488447379555, -0.28681164237730944)
},
{
new Loc(51.50368617913765, -0.25313579464343156),
new Loc(51.51978611305675, -0.24842567405905958),
new Loc(51.51039382684418, -0.24460628015366626),
new Loc(51.508792552597576, -0.24397604687682156),
new Loc(51.50713008309719, -0.24346350415674722),
new Loc(51.502411013302684, -0.2508501075008919),
new Loc(51.502377240039664, -0.25160073203846817),
new Loc(51.50274364303565, -0.25204783703705536)
},
{
new Loc(51.49924084955314, -0.2858705706471945),
new Loc(51.50212820259818, -0.2791479893522646),
new Loc(51.49724510427319, -0.27427453152961206),
new Loc(51.49429724502515, -0.2799184038304611),
new Loc(51.494270969987404, -0.28180678948730314)
}
};
String[] areaNames = { "W3 Ealing", "W3 Hammersmith & Fulham", "W3 Hounslow" };
// for (Map.Entry<String, List<Loc>> area : m_areas.entrySet()) {
// // to have much less points and make sure they are in order
// // the demo data already has these properties
// // http://en.wikipedia.org/wiki/Gift_wrapping_algorithm#Pseudocode
// area.setValue(Algo.convexHull(area.getValue()));
// }
Map<String, List<GeoPoint>> areaMap = new HashMap<String, List<GeoPoint>>();
for (int i = 0; i < areaNames.length; i++) {
List<GeoPoint> points = new ArrayList<GeoPoint>();
for (int j = 0; j < areas[i].length; j++) {
points.add(areas[i][j].toGeoPoint());
}
areaMap.put(areaNames[i], points);
}
m_map.getOverlays().add(new AreasOverlay(areaMap));
// TODO determine location better, e.g. averaging area points
GeoPoint center = new GeoPoint(51509704, -270710);
m_map.getController().setCenter(center);
m_map.getController().setZoom(15);
}
#Override
protected boolean isRouteDisplayed() {
return false;
}
static class Loc {
private double m_lat;
private double m_lon;
public Loc(final double lat, final double lon) {
m_lat = lat;
m_lon = lon;
}
public GeoPoint toGeoPoint() {
return new GeoPoint((int) (m_lat * 1e6), (int) (m_lon * 1e6));
}
};
static class AreasOverlay extends Overlay {
private final Map<String, List<GeoPoint>> m_areas;
private final Paint m_paintFill;
private final Paint m_paintStroke;
private static final int ALPHA = 0x30ffffff; // 48 out of 255 transparent
private static final int[] COLORS =
{ Color.YELLOW, Color.MAGENTA, Color.CYAN, Color.RED, Color.GREEN, Color.BLUE };
static {
for (int i = 0; i < AreasOverlay.COLORS.length; i++) {
AreasOverlay.COLORS[i] &= AreasOverlay.ALPHA;
}
}
public AreasOverlay(final Map<String, List<GeoPoint>> areaMap) {
m_areas = areaMap;
// prepare paints
m_paintFill = new Paint();
m_paintFill.setStyle(Paint.Style.FILL);
m_paintStroke = new Paint(Paint.ANTI_ALIAS_FLAG);
m_paintStroke.setStyle(Style.STROKE);
m_paintStroke.setAntiAlias(true);
m_paintStroke.setStrokeWidth(3);
}
#Override
public void draw(final Canvas canvas, final MapView mapView, final boolean shadow) {
super.draw(canvas, mapView, shadow);
if (shadow) {
return;
}
Projection projection = mapView.getProjection();
List<Path> areaPaths = getPaths(projection, m_areas);
drawPaths(canvas, areaPaths);
}
private List<Path> getPaths(final Projection projection, final Map<String, List<GeoPoint>> areas) {
List<Path> areaPaths = new ArrayList<Path>(areas.size());
for (Map.Entry<String, List<GeoPoint>> entry : areas.entrySet()) {
List<GeoPoint> sourceList = entry.getValue();
Path path = new Path();
path.setFillType(Path.FillType.EVEN_ODD);
Iterator<GeoPoint> it = sourceList.iterator();
Point point = nextDrawPoint(projection, it);
path.moveTo(point.x, point.y);
while (it.hasNext()) {
point = nextDrawPoint(projection, it);
path.lineTo(point.x, point.y);
}
path.close();
areaPaths.add(path);
}
return areaPaths;
}
/**
* <ul>
* <li>Draw with different colors.
* <li>Draw strokes first for them to be always visible.
* <li>Draw fills next with each removing from the drawable area.
* </ul>
*/
private void drawPaths(final Canvas canvas, final List<Path> areaPaths) {
int currentColorIndex;
currentColorIndex = 0;
for (Path path : areaPaths) {
int currentColor = AreasOverlay.COLORS[currentColorIndex++];
currentColorIndex %= AreasOverlay.COLORS.length;
m_paintStroke.setColor(currentColor & 0xff7f7f7f); // make it darker by clearing the high bit
canvas.drawPath(path, m_paintStroke);
}
currentColorIndex = 0;
for (Path path : areaPaths) {
int currentColor = AreasOverlay.COLORS[currentColorIndex++];
currentColorIndex %= AreasOverlay.COLORS.length;
m_paintFill.setColor(currentColor);
canvas.drawPath(path, m_paintFill);
canvas.clipPath(path, Op.DIFFERENCE); // don't allow to draw over each other
}
}
private Point nextDrawPoint(final Projection projection, final Iterator<GeoPoint> it) {
GeoPoint geo = it.next();
Point p = new Point();
projection.toPixels(geo, p);
return p;
}
}
}
The radius for drawCircle is in pixels so it make sense that the circle is always the same size. You have to scale the radius based on the zoom level. The example below will graph a geometry from the JTS Topology Suite that will scale.
public class MapOverlay extends Overlay {
private static final String TAG = MapOverlay.class.getName();
// Allocate once and reuse
private final Paint mPaint = new Paint();
private final Path mPath = new Path();
// Region to highlight
private Geometry mGeometry;
/**
* #param geometry Region to highlight on map
*/
public MapOverlay(Geometry geometry) {
// Set region
mGeometry = geometry;
// Edit paint style
mPaint.setDither(true);
mPaint.setColor(Color.rgb(128, 136, 231));
mPaint.setAlpha(100);
mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(6);
}
/**
* Draw the overlay over the map.
*
* #see com.google.android.maps.Overlay#draw(Canvas, MapView, boolean)
*/
#Override
public void draw(Canvas canvas, MapView mapv, boolean shadow) {
super.draw(canvas, mapv, shadow);
if (mGeometry != null) {
// TODO There could be more than one geometries
Geometry g = mGeometry.getGeometryN(0);
final Point p = new Point();
boolean first = true;
mPath.reset();
for (Coordinate c : g.getCoordinates()) {
// Convert lat/lon to pixels on screen
// GeoPoint is immutable so allocation is unavoidable
Projection projection = mapv.getProjection();
projection.toPixels(new GeoPoint((int) (c.y * 1E6), (int) (c.x * 1E6)), p);
// Set path starting point to first coordinate
// otherwise default start is (0,0)
if (first) {
mPath.moveTo(p.x, p.y);
first = false;
}
// Add new point to path
mPath.lineTo(p.x, p.y);
}
}
// Draw the path with give paint
canvas.drawPath(mPath, mPaint);
}
Adapted from here: MapSelectionOverlay.java
This maybe what you are looking for: Can "overlay" size be zoomed together with the google map on android?
public class ImpactOverlay extends Overlay {
private static int CIRCLERADIUS = 0;
private GeoPoint geopoint;
public ImpactOverlay(GeoPoint point, int myRadius) {
geopoint = point;
CIRCLERADIUS = myRadius;
}
#Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
// Transfrom geoposition to Point on canvas
Projection projection = mapView.getProjection();
Point point = new Point();
projection.toPixels(geopoint, point);
// the circle to mark the spot
Paint circle = new Paint();
circle.setColor(Color.BLACK);
int myCircleRadius = metersToRadius(CIRCLERADIUS, mapView, (double)geopoint.getLatitudeE6()/1000000);
canvas.drawCircle(point.x, point.y, myCircleRadius, circle);
}
public static int metersToRadius(float meters, MapView map, double latitude) {
return (int) (map.getProjection().metersToEquatorPixels(meters) * (1/ Math.cos(Math.toRadians(latitude))));
}
}
What you need is a list of lat/lon points for each shape you want to draw on the map. In the onDraw method, you need to iterate over that list (for each shape you want to draw), and do this:
//---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(p, screenPts);
then draw the shape on the canvas. IIRC that works correctly regardless of zoom, because the mapView is aware of the zoom level, and gives you the appropriate pixel location for the lat/long pair at that zoom level.
I want to draw a route on google map with the change in my position using GPS. As my location changes(when new geopoints are created), the dot moves on the google map but i'm unable to draw the line on the map.
Please help in plotting the route on google maps. Below is my code
`
LocationManager locman;
LocationListener loclis;
Location location;
private MapView map;
List<GeoPoint> geoPointsArray = new ArrayList<GeoPoint>();
private MapController controller;
String provider = LocationManager.GPS_PROVIDER;
double lat;
double lon;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initMapView();
initMyLocation();
locman = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
//locman.requestLocationUpdates(provider,60000, 100,loclis);
//Location = locman.getLastKnownLocation(provider);
}
/** Find and initialize the map view. */
private void initMapView() {
map = (MapView) findViewById(R.id.mapView);
controller = map.getController();
map.setSatellite(false);
map.setBuiltInZoomControls(true);
}
/** Find Current Position on Map. */
private void initMyLocation() {
final MyLocationOverlay overlay = new MyLocationOverlay(this, map);
overlay.enableMyLocation();
overlay.enableCompass(); // does not work in emulator
overlay.runOnFirstFix(new Runnable() {
public void run() {
// Zoom in to current location
controller.setZoom(16);
controller.animateTo(overlay.getMyLocation());
}
});
map.getOverlays().add(overlay);
}
public void onLocationChanged(Location location) {
if (location != null){
lat = location.getLatitude();
lon = location.getLongitude();
GeoPoint New_geopoint = new GeoPoint((int)(lat*1e6),(int)(lon*1e6));
controller.animateTo(New_geopoint);
}
}
class MyOverlay extends Overlay{
public MyOverlay(){
}
public void draw(Canvas canvas, MapView mapv, boolean shadow){
super.draw(canvas, mapv, shadow);
Paint paint;
paint = new Paint();
paint.setColor(Color.GREEN);
paint.setAntiAlias(true);
paint.setStyle(Style.STROKE);
paint.setStrokeWidth(3);
Projection projection = map.getProjection();
Path p = new Path();
for (int i = 0; i < geoPointsArray.size(); i++) {
if (i == geoPointsArray.size() - 1) {
break;
}
Point from = new Point();
Point to = new Point();
projection.toPixels(geoPointsArray.get(i), from);
projection.toPixels(geoPointsArray.get(i + 1), to);
p.moveTo(from.x, from.y);
canvas.drawLine(from.x, from.y, to.x, to.y, paint);
//p.lineTo(to.x, to.y);
}
}
}
`
Why don't you just draw a polyline? You just need LatLng instances.
var flightPlanCoordinates = [
new google.maps.LatLng(43.290307,-2.884174),
new google.maps.LatLng(41.3973,2.158964),
new google.maps.LatLng(40.462046,-3.809694),
new google.maps.LatLng(38.976895,-1.858366)
];
var flightPath = new google.maps.Polyline({
path: flightPlanCoordinates,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 2
});
flightPath.setMap( map );
I wrote this code quite some time ago so forgive me, it could be cleaned up a lot, but i believe it should do what you need.
public class RouteSegmentOverlay extends Overlay {
private Paint paint;
private ArrayList<GeoPoint> routePoints;
private boolean routeIsActive;
private int numberRoutePoints;
private Path path;
// Constructor permitting the route array to be passed as an argument.
public RouteSegmentOverlay(ArrayList<GeoPoint> routePoints) {
this.routePoints = routePoints;
numberRoutePoints = routePoints.size();
routeIsActive = true;
}
// Method to turn route display on and off
public void setRouteView(boolean routeIsActive){
this.routeIsActive = routeIsActive;
}
public void setColor(int c){
color = c;
}
private int color = 0;
Paint.Style paintStyle = Paint.Style.STROKE;
public void setFillStyle(Paint.Style style){
paintStyle = style;
}
#Override
public void draw(Canvas canvas, MapView mapview, boolean shadow) {
super.draw(canvas, mapview, shadow);
if(! routeIsActive) return;
if(paint==null){
paint = new Paint();
paint.setAntiAlias(true);
paint.setStrokeWidth(7);
paint.setStyle(paintStyle);
paint.setAntiAlias(true);
paint.setARGB(255, 0, 0, 255);
paint.setColor(color);
}
if(bitmap==null){
wMin = Integer.MAX_VALUE;
wMax = Integer.MIN_VALUE;
hMin = Integer.MAX_VALUE;
hMax = Integer.MIN_VALUE;
lonMin = Integer.MAX_VALUE;
lonMax = Integer.MIN_VALUE;
latMin = Integer.MAX_VALUE;
latMax = Integer.MIN_VALUE;
Boolean newSegment = true;
Point pt = new Point();
GeoPoint point = null;
ArrayList<Point> points = new ArrayList<Point>();
for(int i=0; i<numberRoutePoints; i++){
point = routePoints.get(i);
int tempLat = point.getLatitudeE6();
int tempLon = point.getLongitudeE6();
if(tempLon<lonMin)lonMin = tempLon;
if(tempLon>lonMax)lonMax = tempLon;
if(tempLat<latMin)latMin = tempLat;
if(tempLat>latMax)latMax = tempLat;
mapview.getProjection().toPixels(routePoints.get(i), pt);
points.add(new Point(pt.x,pt.y));
if(pt.x<wMin)wMin = pt.x;
if(pt.x>wMax)wMax = pt.x;
if(pt.y<hMin)hMin = pt.y;
if(pt.y>hMax)hMax = pt.y;
}
topLeftIn = new GeoPoint(latMax, lonMin);
bottomRightIn = new GeoPoint(latMin, lonMax);
int width = (wMax-wMin);
int height = (hMax-hMin);
bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_4444);
Canvas c = new Canvas(bitmap);
Path bitmapPath = new Path();
bitmapPath.incReserve(numberRoutePoints);
newSegment = true;
for(Point p : points){
if (newSegment) {
bitmapPath.moveTo(p.x - wMin, p.y - hMin);
newSegment = false;
} else {
bitmapPath.lineTo(p.x - wMin, p.y - hMin);
}
}
c.drawPath(bitmapPath, paint);
}
mapview.getProjection().toPixels(topLeftIn, topLeftOut);
mapview.getProjection().toPixels(bottomRightIn, bottomRightOut);
int l = topLeftOut.x;
int t = topLeftOut.y;
int r = bottomRightOut.x;
int b = bottomRightOut.y;
Rect rect = new Rect(l,t,r,b);
canvas.drawBitmap(bitmap, new Rect(0,0,bitmap.getWidth(),bitmap.getHeight()),rect,null);
}
GeoPoint topLeftIn = null;
GeoPoint bottomRightIn = null;
Point topLeftOut = new Point();
Point bottomRightOut = new Point();
Bitmap bitmap = null;
int wMin = Integer.MAX_VALUE;
int wMax = 0;
int hMin = Integer.MAX_VALUE;
int hMax = 0;
int lonMin = Integer.MAX_VALUE;
int lonMax = 0;
int latMin = Integer.MAX_VALUE;
int latMax = 0;
}
Now below is my code that draws path between geopoints in map. This works perfectly fine. What I'm trying to implement is instead of drawing a line,display this path with the dots(.) as in iPhone. I want it to be like this gp1.........gp2 instead of drawing in a single straight line like gp1______gp2.
I have tried almost all the options for doing this but still no success on this, any one can help me solving this?
private void drawPath(List geoPoints, int color) {
List overlays = objMapView.getOverlays();
int loopcount = geoPoints.size() - 1;
for (int i = 0; i < loopcount; i++) {
GeoPoint p1 = (GeoPoint) geoPoints.get(i);
GeoPoint p2 = (GeoPoint) geoPoints.get(i + 1);
MyPathOverLay p = null;
/**** Marking the start and end of the trailpath ****/
if (i == 0) {
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.greenflag);
p = new MyPathOverLay(p1, p2, 0xFFFF0000, true, false, bmp);
} else if (i == loopcount - 1) {
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.redflag);
p = new MyPathOverLay(p1, p2, 0xFFFF0000, false, true, bmp);
} else {
p = new MyPathOverLay(p1, p2, 0xFFFF0000, false, false, null);
}
overlays.add(p);
}
}
public class MyPathOverLay extends Overlay {
private GeoPoint gp1;
private GeoPoint gp2;
private int color;
Boolean isFirstPOI;
Boolean isLastPOI;
AudioMap audioMap;
Bitmap bmp;
public MyPathOverLay(GeoPoint gp1, GeoPoint gp2, int color,Boolean first, Boolean last,Bitmap bitMap) {
this.gp1 = gp1;
this.gp2 = gp2;
this.color = color;
this.isFirstPOI= first;
this.isLastPOI = last;
this.bmp = bitMap;
}
#Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
Projection projection = mapView.getProjection();
Paint paint = new Paint();
Point point = new Point();
projection.toPixels(gp1, point);
paint.setColor(color);
Point point2 = new Point();
projection.toPixels(gp2, point2);
paint.setStrokeWidth(5);
paint.setAlpha(120);
canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
//---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(gp1, screenPts);
//---translate the GeoPoint to screen pixels---
Point screenPts1 = new Point();
mapView.getProjection().toPixels(gp2, screenPts1);
if(isFirstPOI == true){
canvas.drawBitmap(bmp,screenPts.x-20,screenPts.y-40, null);
}
else if(isLastPOI == true) {
canvas.drawBitmap(bmp,screenPts1.x-20,screenPts1.y-35, null);
}
super.draw(canvas, mapView, shadow);
}
}
Thanks to this guy, I referred this example and it is working for me.
How do I make a dotted/dashed line in Android?
Just need to add these 2 lines,
paint.setPathEffect(new DashPathEffect(new float[] {10,10}, 5));
canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
after I set,
paint.setAlpha(120);
#Frankenstein, thank you