Reisezeit zwischen zwei Standorten in Google Map Android API V2

Question

wie Reisezeit zwischen zwei Standorten in Google Map Android API V2, in meinem Programm angezeigt werden, die ich JSONParse zur Anzeige der Fahrstrecke, aber ich kann nicht angezeigt werden die Anzeige Reisezeit, dieses Beispiel Programm, das 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; 
} 

} 

Answer 1

Google Directions JSON Antwort hat eine Aufgabe, Distanz und Dauer innerhalb "LEGS" Array genannt, wie folgt aus:

"legs": [ 
       { 
        "distance": { 
         "text": "0.3 km", 
         "value": 263 
        }, 
        "duration": { 
         "text": "1 min", 
         "value": 52 
        }, 
       ....... //omitted value 
     ] 

So können Sie versuchen, die Distanz und Dauer Parsen (wenn Sie es brauchen) in Ihre App. Vielleicht so:

JSONArray legs = jobject.getString("legs"); 
for (int i = 0; i < legs.length(); i++) 
    { 
     JSONObject legsObject = legs.getJSONObject(i); 
     JSONObject distanceObject = legsObject.getString("distance"); 
     String distanceText = distanceObject.getString("text"); 
     String distanceValue = String.valueOf(distanceObject.getString("value")); 
     //do anything else 
    } 

oh, und legen Sie die Beine Array innerhalb des ArrayTempatMakan Parsen Parsen. Ich kann die Distanz und Dauer mit Jackson JSON-Parser erhalten, so sollten Sie in der Lage sein, es mit org.JSON Parser zu tun.

Viel Glück ^^

EDIT:

In diesem getDirection (JSONObject jObj) Methode Sie erfolgreich objLegs abrufen hier, müssen Sie die Entfernung und Dauer innerhalb objLegs

JSONObject objRoute = jObj.getJSONArray(TAG_ROUTES).getJSONObject(0); 
    JSONObject objLegs = objRoute.getJSONArray(TAG_LEGS).getJSONObject(0); 
    JSONArray arraySteps = objLegs.getJSONArray(TAG_STEPS); 

bekommen ich denke, man sollte hinzufügen dies unter objLegs:

JSONObject objDistance = objLegs.getJSONObject("distance"); 
JSONObject objDuration = objLegs.getJSONObject("duration"); 
String text_distance = objDistance.getString("text"); 
Log.d("Distance", text_distance); //adds an entry to the logCat, Check whether the value of Distance is successfully taken. 
String text_duration = objDuration.getString("text"); 
Log.d("Duration", text_duration); //adds an entry to the logCat, Check whether the value of Distance is successfully taken. 

Dort Ich glaube, Sie sollten den Wert greifen, nachdem die in der Lage sein, kann man einfach den Wert in der Liste Ergebnis hinzufügen.

Wenn Sie noch nicht in der Lage sind Distanz und Dauer einzufügen, benutzen Sie bitte die TempatMakan Klasse zu Ihrem Beitrag enthalten.

EDIT 2:

Declare Distanz und Dauer als String in Ihrem TempatMakan.Java:

private String durasi; 
private String jarak; 

in Ihrem Konstruktor:

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

dann erklären die jeweiligen Getter und Setter für jarak und durasi.

In Ihrem JSONHelper.java, die getTempatMakanAll Methode, fügen Sie diese:

for (int i = 0; i < arrayTempatMakan.length(); i++) 
     { 
      JSONObject jobject = arrayTempatMakan.getJSONObject(i); 
      JSONObject objRoute = jobject.getJSONArray(TAG_ROUTES).getJSONObject(0); 
      JSONObject objLegs = objRoute.getJSONArray(TAG_LEGS).getJSONObject(0); 
      JSONObject objDistance = objLegs.getJSONObject("distance"); 
      JSONObject objDuration = objLegs.getJSONObject("duration"); 

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

     } 

danach, ändern Sie einfach Ihre Listview-Adapter diese Werte angezeigt werden soll.

Good Luck, und leider kann ich dir nicht einen anderen Code geben oder Ihr Projekt ändern, würden Sie sich selbst herausfinden müssen :)

P. S: Skripsi oder Tugas Kuliah?