Auto Navigation between Source Location to destination Location.-Google Map API

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ASP.NET

Mobile

Android

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Dear All,

Have an issue on auto Navigation between Source Location to destination Location. plz go through my requirement.

At any time & irrespective of any location the mobile device should display the push pin in Google map for the Current/ source location of mobile , by reading the Lat Long of source geo location. When user select the destination location from mobile device Google map then the shortest path should display as line marker. One important think is when the user move or go in wrong direction then the short path line marker should change dynamically.So the Sub Divided task's are as follows..
1.Display the push pin at current location in mobile device Google map by GPS capabilities.
2.When User move capture the current location Lat. Long.
3.By Current & Destination Location Lat. &Long Display the Short Distance with line marker.

I did some R&D and from online source able to complete the 2nd & 3rd.Overally the auto navigation feature is not working as expected.

N: B: - If Anything related to the mobile device GPS capabilities & functionality please tell me.

Any suggestions and help are relay welcome.

Thank's

Prasanta kumar Pradhan