Reisezeit zwischen zwei Standorten in Google Map Android API V2

Anzeige Reisezeit zwischen zwei Standorten in Google Map Android API V2,
in meinem Programm habe ich mit JSONParse zur Anzeige von Fahrstrecke, aber ich bin nicht auf display das display zeigt die Reise der Zeit, Dieses Beispiel-Programm habe ich gemacht: DirectionActivity.java

public class DirectionActivity extends FragmentActivity implements OnMyLocationChangeListener{

private LatLng          start;
private LatLng          end;
private String          nama;
private final String    URL = "http://maps.googleapis.com/maps/api/directions/json?";
private GoogleMap       map;
private JSONHelper      json;
private ProgressDialog  pDialog;
private List<LatLng>    listDirections;

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_direction);
    json = new JSONHelper();
    setupMapIfNeeded();

    Bundle b = getIntent().getExtras();
    if (b != null)
    {
        start = new LatLng(b.getDouble(MainActivity.KEY_LAT_ASAL), b.getDouble(MainActivity.KEY_LNG_ASAL));
        end = new LatLng(b.getDouble(MainActivity.KEY_LAT_TUJUAN), b.getDouble(MainActivity.KEY_LNG_TUJUAN));
        nama = b.getString(MainActivity.KEY_NAMA);
    }

    new AsyncTaskDirection().execute();
}

private void setupMapIfNeeded()
{
    if (map == null)
    {
        FragmentManager fragmentManager = getSupportFragmentManager();
        SupportMapFragment supportMapFragment = (SupportMapFragment) fragmentManager
                .findFragmentById(R.id.mapsdirections);
        map = supportMapFragment.getMap();

        if (map != null)
        {
            setupMap();
        }
    }

}

private void setupMap()
{
    map.setMyLocationEnabled(true);
    map.setOnMyLocationChangeListener(this);
    moveToMyLocation();
}

private void moveToMyLocation()
{
    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    Criteria criteria = new Criteria();

    Location location = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false));
    if (location != null)
    {
        map.animateCamera(CameraUpdateFactory.newLatLngZoom(
                new LatLng(location.getLatitude(), location.getLongitude()), 13));
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
    //Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
protected void onResume()
{
    //TODO Auto-generated method stub
    super.onResume();
    int resCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
    if (resCode != ConnectionResult.SUCCESS)
    {
        GooglePlayServicesUtil.getErrorDialog(resCode, this, 1);
    }
}

private class AsyncTaskDirection extends AsyncTask<Void, Void, Void>
{
    @Override
    protected Void doInBackground(Void... params)
    {
        String uri = URL
                + "origin=" + start.latitude + "," + start.longitude
                + "&destination=" + end.latitude + "," + end.longitude
                + "&sensor=true&units=metric";

        JSONObject jObject = json.getJSONFromURL(uri);
        listDirections = json.getDirection(jObject);

        return null;
    }

    @Override
    protected void onPreExecute()
    {
        //TODO Auto-generated method stub
        super.onPreExecute();
        pDialog = new ProgressDialog(DirectionActivity.this);
        pDialog.setMessage("Loading....");
        pDialog.setCancelable(true);
        pDialog.show();
    }

    @Override
    protected void onPostExecute(Void result)
    {
        //TODO Auto-generated method stub
        super.onPostExecute(result);
        pDialog.dismiss();
        gambarDirection();
    }

}

public void gambarDirection()
{
    PolylineOptions line = new PolylineOptions().width(3).color(Color.BLUE);
    for (int i = 0; i < listDirections.size(); i++)
    {
        line.add(listDirections.get(i));
    }
    map.addPolyline(line);

    //tambah marker di posisi end
    map.addMarker(new MarkerOptions()
            .position(end)
            .title(nama));
}

@Override
public void onMyLocationChange(Location location)
{
    Toast.makeText(this, "Lokasi berubah ke " + location.getLatitude() + "," + location.getLongitude(),
            Toast.LENGTH_SHORT).show();

}

}

JSONHelper.java

public class JSONHelper
{
private InputStream     is              = null;
private JSONObject      jsonObject      = null;
private String          json            = "";

private final String    TAG_TEMPATMAKAN = "tempatmakan";
private final String    TAG_ID          = "id";
private final String    TAG_NAMA        = "nama";
private final String    TAG_ALAMAT      = "alamat";
private final String    TAG_LAT         = "lat";
private final String    TAG_LNG         = "lng";
private final String    TAG_ROUTES      = "routes";
private final String    TAG_LEGS        = "legs";
private final String    TAG_STEPS       = "steps";
private final String    TAG_POLYLINE    = "polyline";
private final String    TAG_POINTS      = "points";
private final String    TAG_START       = "start_location";
private final String    TAG_END         = "end_location";

public JSONObject getJSONFromURL(String url)
{
    try
    {
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(url);

        HttpResponse httpResponse = httpClient.execute(httpGet);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();
    } catch (UnsupportedEncodingException e)
    {
        e.printStackTrace();
    } catch (ClientProtocolException e)
    {
        e.printStackTrace();
    } catch (IOException e)
    {
        e.printStackTrace();
    }

    try
    {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);

        StringBuilder sb = new StringBuilder();
        String line = null;

        while ((line = reader.readLine()) != null)
        {
            sb.append(line + "\n");
        }

        is.close();
        json = sb.toString();
    } catch (Exception e)
    {
        //TODO: handle exception
    }

    try
    {
        jsonObject = new JSONObject(json);

    } catch (JSONException e)
    {
        //TODO: handle exception
    }

    return jsonObject;
}

public ArrayList<TempatMakan> getTempatMakanAll(JSONObject jobj)
{
    ArrayList<TempatMakan> listTempatMakan = new ArrayList<TempatMakan>();

    try
    {
        JSONArray arrayTempatMakan = jobj.getJSONArray(TAG_TEMPATMAKAN);

        for (int i = 0; i < arrayTempatMakan.length(); i++)
        {
            JSONObject jobject = arrayTempatMakan.getJSONObject(i);

            Log.d("log", "muter ke " + i);
            listTempatMakan.add(new TempatMakan(jobject.getInt(TAG_ID), jobject.getString(TAG_NAMA), jobject
                    .getString(TAG_ALAMAT), jobject
                    .getDouble(TAG_LAT), jobject.getDouble(TAG_LNG)));

        }
    } catch (JSONException e)
    {
        e.printStackTrace();
    }
    return listTempatMakan;
}

/*
 * Untuk decode Polyline
 * 
 * @params String
 * 
 * @return List<LatLng>
 */
private List<LatLng> decodePoly(String encoded)
{
    List<LatLng> poly = new ArrayList<LatLng>();
    int index = 0, len = encoded.length();
    int lat = 0, lng = 0;
    while (index < len)
    {
        int b, shift = 0, result = 0;
        do
        {
            b = encoded.charAt(index++) - 63;
            result |= (b & 0x1f) << shift;
            shift += 5;
        } while (b >= 0x20);
        int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
        lat += dlat;
        shift = 0;
        result = 0;
        do
        {
            b = encoded.charAt(index++) - 63;
            result |= (b & 0x1f) << shift;
            shift += 5;
        } while (b >= 0x20);
        int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
        lng += dlng;

        LatLng position = new LatLng((double) lat / 1E5, (double) lng / 1E5);
        poly.add(position);
    }
    return poly;

}

/*
 * Untuk mendapatkan direction
 * 
 * @params JSONObject
 * 
 * @return List<LatLng>
 */
public List<LatLng> getDirection(JSONObject jObj)
{

    List<LatLng> directions = new ArrayList<LatLng>();

    try
    {
        JSONObject objRoute = jObj.getJSONArray(TAG_ROUTES).getJSONObject(0);
        JSONObject objLegs = objRoute.getJSONArray(TAG_LEGS).getJSONObject(0);
        JSONArray arraySteps = objLegs.getJSONArray(TAG_STEPS);
        for (int wi2t = 0; wi2t < arraySteps.length(); wi2t++)
        {
            JSONObject step = arraySteps.getJSONObject(wi2t);
            JSONObject objStart = step.getJSONObject(TAG_START);
            JSONObject objEnd = step.getJSONObject(TAG_END);
            double latStart = objStart.getDouble(TAG_LAT);
            double lngStart = objStart.getDouble(TAG_LNG);

            directions.add(new LatLng(latStart, lngStart));

            JSONObject poly = step.getJSONObject(TAG_POLYLINE);
            String encodedPoly = poly.getString(TAG_POINTS);

            List<LatLng> decodedPoly = decodePoly(encodedPoly);
            for (int eka = 0; eka < decodedPoly.size(); eka++)
            {
                directions.add(new LatLng(decodedPoly.get(eka).latitude, decodedPoly.get(eka).longitude));
            }

            double latEnd = objEnd.getDouble(TAG_LAT);
            double lngEnd = objEnd.getDouble(TAG_LNG);
            directions.add(new LatLng(latEnd, lngEnd));

        }
    } catch (JSONException e)
    {
        //TODO: handle exception
    }

    return directions;
}
}

MainActivity.java

public class MainActivity extends FragmentActivity implements OnInfoWindowClickListener
{
private GoogleMap           map;
private JSONHelper          json;
private ProgressDialog      pDialog;
private Button      btnGetDirection;

private List<TempatMakan>   listTempatMakan;
private final String        URL_API     = "http://lhocation1203.hostzi.com/dataapi/tempatmakan.php";

public static final String  KEY_NAMA    = "nama";
public static final String  KEY_ALAMAT  = "alamat";
public static final String  KEY_LAT_TUJUAN  = "lat_tujuan";
public static final String  KEY_LNG_TUJUAN  = "lng_tujuan";
public static final String  KEY_LAT_ASAL    = "lat_asal";
public static final String  KEY_LNG_ASAL    = "lng_asal";

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    json = new JSONHelper();

    new AsynTaskMain().execute();

    setupMapIfNeeded();
}

private void setupMapIfNeeded()
{
    if (map == null)
    {
        FragmentManager fragmentManager = getSupportFragmentManager();
        SupportMapFragment supportMapFragment = (SupportMapFragment) fragmentManager.findFragmentById(R.id.maps);
        map = supportMapFragment.getMap();

        if (map != null)
        {
            setupMap();
        }
    }

}

private void setupMap()
{
    map.setMyLocationEnabled(true);
    map.setOnInfoWindowClickListener(this);
    moveToMyLocation();
}

private void moveToMyLocation()
{
    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    Criteria criteria = new Criteria();

    Location location = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false));
    if (location != null)
    {
        map.animateCamera(CameraUpdateFactory.newLatLngZoom(
                new LatLng(location.getLatitude(), location.getLongitude()), 13));
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
    //Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
protected void onResume()
{
    //TODO Auto-generated method stub
    super.onResume();

    int resCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
    if (resCode != ConnectionResult.SUCCESS)
    {
        GooglePlayServicesUtil.getErrorDialog(resCode, this, 1);
    }
}

private class AsynTaskMain extends AsyncTask<Void, Void, Void>
{

    @Override
    protected void onPostExecute(Void result)
    {
        //TODO Auto-generated method stub
        pDialog.dismiss();
        runOnUiThread(new Runnable()
        {

            @Override
            public void run()
            {
                //TODO Auto-generated method stub
                for (int i = 0; i < listTempatMakan.size(); i++)
                {

                    map.addMarker(new MarkerOptions()
                            .position(new LatLng(listTempatMakan.get(i).getLat(),
                                    listTempatMakan.get(i).getLng()))
                            .title(listTempatMakan.get(i).getNama())
                            .snippet(listTempatMakan.get(i).getAlamat()));

                }
            }
        });

        super.onPostExecute(result);
    }

    @Override
    protected void onPreExecute()
    {
        //TODO Auto-generated method stub
        super.onPreExecute();
        pDialog = new ProgressDialog(MainActivity.this);
        pDialog.setMessage("Loading....");
        pDialog.setCancelable(true);
        pDialog.show();
    }

    @Override
    protected Void doInBackground(Void... params)
    {
        //TODO Auto-generated method stub

        JSONObject jObject = json.getJSONFromURL(URL_API);
        listTempatMakan = json.getTempatMakanAll(jObject);
        return null;
    }
}

@Override
public void onInfoWindowClick(Marker marker)
{
    //marker id -> m0, m1, m2 dst..
    String id = marker.getId();
    id = id.substring(1);

    LatLng myLocation = new LatLng(map.getMyLocation().getLatitude(), map.getMyLocation().getLongitude());

    if (myLocation != null)
    {
        Bundle bundle = new Bundle();
        bundle.putString(KEY_NAMA, listTempatMakan.get(Integer.parseInt(id)).getNama());
        bundle.putString(KEY_ALAMAT, listTempatMakan.get(Integer.parseInt(id)).getAlamat());
        bundle.putDouble(KEY_LAT_TUJUAN, marker.getPosition().latitude);
        bundle.putDouble(KEY_LNG_TUJUAN, marker.getPosition().longitude);
        bundle.putDouble(KEY_LAT_ASAL, myLocation.latitude);
        bundle.putDouble(KEY_LNG_ASAL, myLocation.longitude);

        Intent i = new Intent(MainActivity.this, InfoTempatMakanActivity.class);
        i.putExtras(bundle);
        startActivity(i);

    } else
    {
        Toast.makeText(this, "Tidak dapat menemukan lokasi anda ", Toast.LENGTH_LONG).show();
    }
}
}

InfoTempatMakanActivity.java

public class InfoTempatMakanActivity extends Activity implements OnClickListener
{

private TextView    tvNama;
private TextView    tvAlamat;
private Button      btnGetDirection;

private LatLng      lokasiTujuan;
private LatLng      lokasiAwal;
private String      nama;
private String      alamat;

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_info_tempat_makan);

    initialize();

    Bundle bundle = getIntent().getExtras();
    if (bundle != null)
    {
        nama = bundle.getString(MainActivity.KEY_NAMA);
        alamat = bundle.getString(MainActivity.KEY_ALAMAT);
        lokasiTujuan = new LatLng(bundle.getDouble(MainActivity.KEY_LAT_TUJUAN),
                bundle.getDouble(MainActivity.KEY_LNG_TUJUAN));
        lokasiAwal = new LatLng(bundle.getDouble(MainActivity.KEY_LAT_ASAL),
                bundle.getDouble(MainActivity.KEY_LNG_ASAL));
    }

    setTeksView();

}

private void setTeksView()
{
    tvNama.setText(nama);
    tvAlamat.setText(alamat);
}

private void initialize()
{
    tvAlamat = (TextView) findViewById(R.id.alamatTempatMakan);
    tvNama = (TextView) findViewById(R.id.namaTempatMakan);
    btnGetDirection = (Button) findViewById(R.id.btnDirection);
    btnGetDirection.setOnClickListener(this);
}

@Override
public void onClick(View v)
{
    Bundle bundle = new Bundle();
    bundle.putDouble(MainActivity.KEY_LAT_ASAL, lokasiAwal.latitude);
    bundle.putDouble(MainActivity.KEY_LNG_ASAL, lokasiAwal.longitude);
    bundle.putDouble(MainActivity.KEY_LAT_TUJUAN, lokasiTujuan.latitude);
    bundle.putDouble(MainActivity.KEY_LNG_TUJUAN, lokasiTujuan.longitude);
    bundle.putString(MainActivity.KEY_NAMA, nama);

    Intent intent = new Intent(this, DirectionActivity.class);
    intent.putExtras(bundle);

    startActivity(intent);
}

}

TempatMakan.java

public class TempatMakan
{
private int id;
private String  nama;
private String  alamat;
private double  lat;
private double  lng;

public TempatMakan()
{
    //TODO Auto-generated constructor stub
}

public TempatMakan(int id, String nama, String alamat, double lat, double lng)
{
    super();
            this.id = id;
    this.nama = nama;
    this.alamat = alamat;
    this.lat = lat;
    this.lng = lng;
}

public String getNama()
{
    return nama;
}

public void setNama(String nama)
{
    this.nama = nama;
}

public String getAlamat()
{
    return alamat;
}

public void setAlamat(String alamat)
{
    this.alamat = alamat;
}

public double getLat()
{
    return lat;
}

public void setLat(double lat)
{
    this.lat = lat;
}

public double getLng()
{
    return lng;
}

public void setLng(double lng)
{
    this.lng = lng;
}

}