How to Draw Route in Google Maps API V2 from my location

android, google-maps-android-api-2, json, routes

Solution

Assuming you have at least 2 location objects you can draw a polyline. This method draws a semi-transparent blue line on the map given a list of locations. This code is taken from an application currently on the Android Play store (Simply Walking).

private void drawPrimaryLinePath( ArrayList<Location> listLocsToDraw )
{
    if ( map == null )
    {
        return;
    }

    if ( listLocsToDraw.size() < 2 )
    {
        return;
    }

    PolylineOptions options = new PolylineOptions();

    options.color( Color.parseColor( "#CC0000FF" ) );
    options.width( 5 );
    options.visible( true );

    for ( Location locRecorded : listLocsToDraw )
    {
        options.add( new LatLng( locRecorded.getLatitude(),
                                 locRecorded.getLongitude() ) );
    }

    map.addPolyline( options );

}

Problem

I want to make direction application but, i have problem to draw route from my location to destination, i get variabel longitude and latitude from my location , but i dont know to draw line .. i want to draw direction to this location = -6.984873352070259,108.48140716552734. please help me guys.. i have read the quetions before but i cant get solution.. thanks.. iam sorry before.. here is my code ``` package com.apps.visitkuningan; import android.app.Dialog; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.Menu; import android.widget.Toast; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.SupportMapFragment; import com.google.android.gms.maps.model.LatLng; public class Arahkan extends FragmentActivity implements LocationListener { GoogleMap googleMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Getting Google Play availability status int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext()); // Showing status if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available int requestCode = 10; Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode); dialog.show(); }else { // Google Play Services are available // Getting reference to the SupportMapFragment of activity_main.xml SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); // Getting GoogleMap object from the fragment googleMap = fm.getMap(); // Enabling MyLocation Layer of Google Map googleMap.setMyLocationEnabled(true); // Getting LocationManager object from System Service LOCATION_SERVICE LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); // Creating a criteria object to retrieve provider Criteria criteria = new Criteria(); // Getting the name of the best provider String provider = locationManager.getBestProvider(criteria, true); // Getting Current Location Location location = locationManager.getLastKnownLocation(provider); if(location!=null){ onLocationChanged(location); } locationManager.requestLocationUpdates(provider, 20000, 0, this); } } @Override public void onLocationChanged(Location location) { // Getting latitude of the current location double latitude = location.getLatitude(); // Getting longitude of the current location double longitude = location.getLongitude(); // Creating a LatLng object for the current location LatLng latLng = new LatLng(latitude, longitude); // Showing the current location in Google Map googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); // Zoom in the Google Map googleMap.animateCamera(CameraUpdateFactory.zoomTo(15)); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub Toast.makeText( getApplicationContext(), "Gps Disabled", Toast.LENGTH_SHORT ).show(); } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub Toast.makeText( getApplicationContext(), "Gps Enabled", Toast.LENGTH_SHORT).show(); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } } ``` Iam newbie in android programming i hope you can help me.. thanks.. :)

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