In my application use JASON webservice to get data from Google Navigarion api. I use the Code is below. i got Exception android.os.NetworkOnMainThreadException. how to use AsyncTask? here is my code. Thanks.`public class MainActivity extends MapActivity {
MapView mapView ;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
System.out.println("*************1**************1");
setContentView(R.layout.activity_main);
System.out.println("*************2**************");
mapView = (MapView) findViewById(R.id.mapv);
System.out.println("*************3**************");
Route route = directions(new GeoPoint((int)(26.2*1E6),(int)(50.6*1E6)), new GeoPoint((int)(26.3*1E6),(int)(50.7*1E6)));
RouteOverlay routeOverlay = new RouteOverlay(route, Color.BLUE);
mapView.getOverlays().add(routeOverlay);
mapView.invalidate();
System.out.println("*************4**************");
}
@SuppressLint("ParserError")
private Route directions(final GeoPoint start, final GeoPoint dest) {
//https://developers.google.com/maps/documentation/directions/#JSON <- get api
String jsonURL = "http://maps.googleapis.com/maps/api/directions/json?";
final StringBuffer sBuf = new StringBuffer(jsonURL);
sBuf.append("origin=");
sBuf.append(start.getLatitudeE6()/1E6);
sBuf.append(',');
sBuf.append(start.getLongitudeE6()/1E6);
sBuf.append("&destination=");
sBuf.append(dest.getLatitudeE6()/1E6);
sBuf.append(',');
sBuf.append(dest.getLongitudeE6()/1E6);
sBuf.append("&sensor=true&mode=driving");
Parser parser = new GoogleParser(sBuf.toString());
Route r = parser.parse();
System.out.println("********r in thread*****" +r);
return r;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
`
