TrivialGPS.java :  » UnTagged » android-wifi-geo-predictor » com » kuzmich » locator » Android Open Source

package com.kuzmich.locator;

import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SubMenu;
import android.widget.Toast;

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 com.kuzmich.locator.location.MyLocationManager;

/**
 * Sample Application to demonstrate how to use some of the android Location
 * 
 * API's
 * Author: Jason Hudgins <jason@droidworks.com>
 */
public class TrivialGPS extends MapActivity
{
  private static final boolean DEBUG_MODE = true;
  private static final String MAP_API_KEY =
    "0gnb440wcg0mGDTmJtOT3SDv2GXu07NqhdFeS6A";
  private static final String DEBUG_MAP_API_KEY =
    "0gnb440wcg0lyeyGqdxRlIOSJALN_j--0eumRiw";

  private enum MyViewOption {
    VIEW_SATELLITE, VIEW_MAP, VIEW_STREET
  };

  private MapController mapController;
  private MapView mapView;
  // private MyLocationOverlay locationOverlay;
  private MyLocationManager locationManager;
  private GeoPoint curPosition;
  private LocationListener listener;
  private MyViewOption viewSelected;
  private String provider;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle icicle)
  {
    super.onCreate(icicle);

    // create a map view
    mapView = new MapView(this, DEBUG_MODE ? DEBUG_MAP_API_KEY : MAP_API_KEY);
    mapController = mapView.getController();

    mapView.getController().setZoom(15);
    mapView.setClickable(true);
    mapView.setEnabled(true);
    mapView.setSatellite(true); viewSelected = MyViewOption.VIEW_SATELLITE;
    mapView.setBuiltInZoomControls(true);

    setContentView(mapView);

    listener = new LocationUpdateHandler();
    // get a hangle on the location manager
    locationManager = MyLocationManager.getInstance(this);
    provider = LocationManager.GPS_PROVIDER;
    locationManager.requestLocationUpdates(provider, 0, 0, listener);
  }

  // this inner class is the intent reciever that recives notifcations
  // from the location provider about position updates, and then redraws
  // the MapView with the new location centered.
  public class LocationUpdateHandler implements LocationListener
  {
    private static final String TAG = "TGPS-listener";

    @Override
    public void onLocationChanged(Location loc)
    {
      int lat = (int) (loc.getLatitude() * 1E6);
      int lng = (int) (loc.getLongitude() * 1E6);
      curPosition = new GeoPoint(lat, lng);
      mapController.animateTo(curPosition);
      Log.v(TAG, "Current position is : " +
        "(lng, lat) = (" + lng + ", " + lat + ")");
      setContentView(mapView);
    }

    @Override
    public void onProviderDisabled(String provider)
    {
    }

    @Override
    public void onProviderEnabled(String provider)
    {
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras)
    {
    }
  }

  @Override
  protected boolean isRouteDisplayed()
  {
    return false;
  }

  private static class MenuEnums
  {
    public static final int MY_LOCATION = 1;
    public static final int SELECT_VIEW = 2;
    public static final int SELECT_PROVIDER = 3;
    public static final int QUIT = 4;

    public static final int SELECT_VIEW_GROUP_ID = 10;
    public static final int SELECT_MAP_VIEW = 11;
    public static final int SELECT_STREET_VIEW = 12;
    public static final int SELECT_SATELLITE_VEW = 13;

    public static final int SELECT_PROVIDER_GID = 20;
    public static final int SELECT_GPS = 21;
    public static final int SELECT_CELLID = 22;
  }

  public boolean onCreateOptionsMenu(Menu menu)
  {
    menu.add(0, MenuEnums.MY_LOCATION, 0, "My Location");
    SubMenu view = menu.addSubMenu(0, MenuEnums.SELECT_VIEW, 0, "Select View");
    menu.add(0, MenuEnums.QUIT, 0, "Quit");

    view.add(MenuEnums.SELECT_VIEW_GROUP_ID, MenuEnums.SELECT_MAP_VIEW, 0,
      "Map").setChecked(viewSelected == MyViewOption.VIEW_MAP);
    view.add(MenuEnums.SELECT_VIEW_GROUP_ID, MenuEnums.SELECT_SATELLITE_VEW, 0,
      "Satellite").setChecked(viewSelected == MyViewOption.VIEW_SATELLITE);
    view.add(MenuEnums.SELECT_VIEW_GROUP_ID, MenuEnums.SELECT_STREET_VIEW, 0,
      "Street").setChecked(viewSelected == MyViewOption.VIEW_STREET);
    view.setGroupCheckable(MenuEnums.SELECT_VIEW_GROUP_ID, true, true);

    {
      boolean isGps = this.provider.equals(MyLocationManager.GPS_PROVIDER);

      SubMenu provider = menu.addSubMenu(0, MenuEnums.SELECT_PROVIDER, 0, "Select Provider");
      provider.add(MenuEnums.SELECT_PROVIDER_GID, MenuEnums.SELECT_GPS, 0, "GPS")
        .setChecked(isGps);
      provider.add(MenuEnums.SELECT_PROVIDER_GID, MenuEnums.SELECT_CELLID, 0, "CellID")
        .setChecked(!isGps);
      provider.setGroupCheckable(MenuEnums.SELECT_PROVIDER_GID, true, true);
    }

    return true;
  }

  private boolean onOptionsViewSelected(MenuItem item)
  {
    switch (item.getItemId())
    {
    case MenuEnums.SELECT_MAP_VIEW:
    case MenuEnums.SELECT_SATELLITE_VEW:
    case MenuEnums.SELECT_STREET_VIEW:
      if (item.isChecked())
        item.setChecked(false);
      else
        item.setChecked(true);
    }

    switch (item.getItemId())
    {
    case MenuEnums.SELECT_MAP_VIEW:
      mapView.setStreetView(false);
      mapView.setSatellite(false);
      setContentView(mapView);
      return true;
    case MenuEnums.SELECT_SATELLITE_VEW:
      mapView.setSatellite(true);
      mapView.setStreetView(false);
      setContentView(mapView);
      return true;
    case MenuEnums.SELECT_STREET_VIEW:
      mapView.setStreetView(true);
      mapView.setSatellite(false);
      setContentView(mapView);
      return true;
    }
    return false;
  }

  private boolean onOptionsProviderSelected(MenuItem item)
  {
    switch (item.getItemId())
    {
    case MenuEnums.SELECT_GPS:
    case MenuEnums.SELECT_CELLID:
      if (item.isChecked())
        item.setChecked(false);
      else
        item.setChecked(true);
    }

    switch (item.getItemId())
    {
    case MenuEnums.SELECT_GPS:
      if (locationManager.isProviderEnabled(MyLocationManager.NETWORK_PROVIDER))
        locationManager.removeUpdates(listener);
      if (!locationManager.isProviderEnabled(MyLocationManager.GPS_PROVIDER))
      {
        Toast.makeText(this, "Sorry, GPS service is not available. " +
          "Please turn it on in your Android Settings menu.",
          Toast.LENGTH_LONG).show();
        return true;
      }

      locationManager.requestLocationUpdates(MyLocationManager.GPS_PROVIDER,
        0, 0, listener);
      return true;
    case MenuEnums.SELECT_CELLID:
      if (locationManager.isProviderEnabled(MyLocationManager.GPS_PROVIDER))
        locationManager.removeUpdates(listener);
      if (!locationManager.isProviderEnabled(MyLocationManager.NETWORK_PROVIDER))
      {
        Toast.makeText(this, "Sorry, CellId service is not available. " +
          "It requires an Internet connection. Please mark a corresponding " +
          "checkbox in application preferences.",
          Toast.LENGTH_LONG).show();
        return true;
      }

      locationManager.requestLocationUpdates(MyLocationManager.NETWORK_PROVIDER,
        0, 0, listener);
      return true;
    }
    return false;
  }

  public boolean onOptionsItemSelected(MenuItem item)
  {
    switch (item.getGroupId())
    {
    case MenuEnums.SELECT_VIEW_GROUP_ID:
      return onOptionsViewSelected(item);
    case MenuEnums.SELECT_PROVIDER_GID:
      return onOptionsProviderSelected(item);
    }
    switch (item.getItemId())
    {
    case MenuEnums.MY_LOCATION:
      if (curPosition == null)
      {
        Toast t =
          Toast.makeText(getApplicationContext(), "Waiting for location",
            Toast.LENGTH_LONG);
        t.setGravity(Gravity.BOTTOM, 0, 0);
        t.show();
      }
      else
        mapController.animateTo(curPosition);
      setContentView(mapView);
      return true;
    case MenuEnums.QUIT:
      locationManager.removeUpdates(listener);
      finish();
      return true;
    }
    return false;
  }
}