android google map route between 2 point

I want to draw route between 2 points in Google map with a pin mark at ends points. in this, user can choose any driving route like by car, by cycle, by walk. I have to show routing information like "2 miles ahead , left from n开发者_JAVA技巧ext street" and also estimated time.so regarding this , I found a lot of tutorial on the internet. the best I found is:

http://code.google.com/p/j2memaprouteprovider/source/browse/#svn/trunk/J2MEMapRouteAndroidEx

which is very complex and slow.

next I found this one:

http://www.anddev.org/google_driving_directions_-_mapview_overlayed-t826.html

this one is very similar to what I want, except some feature. but it is outdated.

I also found that I have to use KML for this. but i don't want to use it because of complexity so is it necessary to use KML? is there any better way to do this? can i have full source code as I got confused by seeing chunk of code. thanks a lot in advance,.

rock,

The simplest solution for this is to open "Google Map Application" that is already installed in android device. Just pass the source and target location's latitude and longitude as a parameter and call the google map application as follows:

Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("http://maps.google.com/maps?saddr="+latitude_source+","+longitude_source+"&daddr="+latitude_dest+","+longitude_dest));
        startActivity(i);

Using this approach, you can also choose any driving route like by car, by cycle, by walk etc and other functionalities that is provided by application.

Google Directions API contains everything you need. I found it easier to learn how the service works before looking at any complete source code.

Basically you will have to execute a UrlConnection and read the input stream. If you paste a basic request into a browser, you can see how your input stream would look like. Ex: http://maps.googleapis.com/maps/api/directions/xml?origin=Chicago,IL&destination=Los+Angeles,CA&waypoints=Joplin,MO|Oklahoma+City,OK&sensor=false The result contains everything you would need but you will have to parse the result for information like step by step directions. Also the node called "overview_polyline" is what you would use to draw a complete route on the MapView. You could use the formula here to decode that polyline into a list of coordinates.