I am not able to properly extract out the latitude and longitude point set to draw route further. Can anybody get me the code to do so?
Thanks in advance
public class MapprojectActivity extends MapActivity {
/** Called when the activity is first created. */
static final String TAG_RESULTS = "results";
static final String TAG_GEO = "geometry";
static final String TAG_LOCATION = "location";
static final String TAG_LAT = "lat";
static final String TAG_LNG = "lng";
JSONArray res = null;
MapView mapView;
List<Overlay> mapOverlays;
Drawable drawable;
MyItemizedOverlay itemizedOverlay;
static String url = "http://maps.google.com/maps/api/geocode/json?address=guindy,+chennai,+IN&sensor=false";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map);
TextView lattv=(TextView)findViewById(R.id.lat);
TextView lngtv=(TextView)findViewById(R.id.lng);
JSONParstring jParser = new JSONParstring();
// getting JSON string from URL
try
{
JSONObject jobj = new JSONObject(json);
res = jobj.getJSONArray(TAG_RESULTS);
for(int i = 0; i < res.length(); i++){
JSONObject c = res.getJSONObject(i);
JSONObject loc = c.optJSONObject(TAG_GEO).optJSONObject(TAG_LOCATION);
String lat =loc.getString(TAG_LAT);
String lng = loc.getString(TAG_LNG);
lattv.setText(lat);
lngtv.setText(lng);
}
}
catch (JSONException e){ }
String i=(String) lattv.getText();
String j=(String) lngtv.getText();
double lat1 = Double.parseDouble(i);
double lng1 = Double.parseDouble(j);
mapView = (MapView) findViewById(R.id.map_view);
mapView.setBuiltInZoomControls(false);
mapOverlays = mapView.getOverlays();
drawable = getResources().getDrawable(R.drawable.mark1);
itemizedOverlay = new MyItemizedOverlay(drawable, mapView);
GeoPoint point = new GeoPoint((int)(lat1*1E6),(int)(lng1*1E6));
OverlayItem overlayItem = new OverlayItem(point, "Amy Jones",
"(checked in Lemon-tree with friends lisa wong, paul jones)");
itemizedOverlay.addOverlay(overlayItem);
mapOverlays.add(itemizedOverlay);
final MapController mc = mapView.getController();
mc.animateTo(point);
mc.setZoom(16);
// Integer i = Integer.valueOf((String) lattv.getText());
// Integer j = Integer.valueOf((String) lngtv.getText());
// // first overlay
}
protected boolean isRouteDisplayed() {
return false;
}
}
Here is to get Latitude/Longitude from JSON http://blog.synyx.de/2010/06/routing-driving-directions-on-android-part-1-get-the-route/
And this is how to draw a route http://blog.synyx.de/2010/06/routing-driving-directions-on-android-%E2%80%93-part-2-draw-the-route/
u should study it. i hope it'll help.
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