Android Open Source - FoodFinderApp Display Map

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License

The source code is released under:

GNU General Public License

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Java Source Code

package cs499.examples.semesterproject;
//from   w  w w.ja va 2  s.com
import java.util.List;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;


import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.app.AlertDialog;
import android.app.Dialog;
import android.view.Menu;

public class DisplayMap extends MapActivity 
{
  private double lat;
  private double lon;
  private MapView myMap;
  private Geocoder gc;
  private String address;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) 
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_display_map);
    
    Bundle extras = getIntent().getExtras();
    address = extras.getString("address");
    
    myMap = (MapView) findViewById(R.id.simpleGM_map);
    gc = new Geocoder(this);
    
    try 
    {

      List<Address> foundAdresses = gc.getFromLocationName(
          address, 5); // Search addresses

      if (foundAdresses.size() == 0) { // if no address found,
        // display an error
        Dialog locationError = new AlertDialog.Builder(DisplayMap.this).setIcon(0).setTitle(
            "Error").setPositiveButton("ok", null)
            .setMessage(
                "Sorry, your address doesn't exist.")
            .create();
        locationError.show();
      } 
      else 
      { // else display address on map
        for (int i = 0; i < foundAdresses.size(); ++i) 
        {
          // Save results as Longitude and Latitude
          // @todo: if more than one result, then show a
          // select-list
          Address x = foundAdresses.get(i);
          lat = x.getLatitude();
          lon = x.getLongitude();
        }
        navigateToLocation((lat * 1000000), (lon * 1000000),
            myMap); // display the found address
      }
    } catch (Exception e) {
      // @todo: Show error message
    }

  }
  
  public static void navigateToLocation(double latitude, double longitude,
      MapView mv) {
    GeoPoint p = new GeoPoint((int) latitude, (int) longitude); // new
    // GeoPoint
    mv.displayZoomControls(true); // display Zoom (seems that it doesn't
    // work yet)
    MapController mc = mv.getController();
    mc.animateTo(p); // move map to the given point
    int zoomlevel = mv.getMaxZoomLevel(); // detect maximum zoom level
    mc.setZoom(zoomlevel - 1); // zoom
    mv.setSatellite(false); // display only "normal" mapview

  }

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

  @Override
  protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;
  }

}

Java Source Code List