Making a map on android -

im trying make app on android typical map utilizes smartphones gps , planning on using dijkstra’s shortest path algorithm.

what plan make top view map of island , gather latitude , longitude data each intersection on islands road gps, join image (the map of island made) latitude , longitude data implement dijkstra’s shortest path algorithm.

any suggestions?

how go this?

first activity file

googlemap googlemap; googlemap = ((mapfragment) getfragmentmanager().findfragmentbyid(r.id.map)).getmap();