Android Open Source - Mapyst Location Finder

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License

The source code is released under:
Apache License
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Java Source Code

/*
 * Copyright (C) 2013 Mapyst//from  ww  w  .j av a  2s.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.mapyst.android;

import com.mapyst.route.InterpretedInfo;
import com.mapyst.route.Interpreter;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.Toast;

public class LocationFinder {

  private LocationManager mlocManager;
  private LocationListener mlocListenerGps;
  private LocationListener mlocListenerNetwork;
  private Location currentGpsLoc, currentNetworkLoc;

  private Mapyst app;

  public LocationFinder(Mapyst app) {
    this.app = app;
  }

  public void setupLocService() {
    mlocManager = (LocationManager) app
        .getSystemService(Context.LOCATION_SERVICE);
    mlocListenerNetwork = new LocationListener() {
      @Override
      public void onLocationChanged(Location loc) {
        currentNetworkLoc = loc;
      }

      @Override
      public void onProviderDisabled(String provider) {
        // Toast.makeText(app, "Current Network Location Disabled",
        // Toast.LENGTH_LONG);
      }

      @Override
      public void onProviderEnabled(String provider) {
      }

      @Override
      public void onStatusChanged(String provider, int status, Bundle extras) {
      }
    };
    mlocManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, mlocListenerNetwork);

    mlocListenerGps = new LocationListener() {
      @Override
      public void onLocationChanged(Location loc) {
        currentGpsLoc = loc;
      }

      @Override
      public void onProviderDisabled(String provider) {
        Toast.makeText(app, "Current GPS Location Disabled", Toast.LENGTH_LONG).show();
      }

      @Override
      public void onProviderEnabled(String provider) {
      }

      @Override
      public void onStatusChanged(String provider, int status,
          Bundle extras) {
      }
    };
    mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mlocListenerGps);
  }

  public void endLocService() {
    if (mlocManager != null) {
      mlocManager.removeUpdates(mlocListenerGps);
      mlocManager.removeUpdates(mlocListenerNetwork);
    }
  }

  public InterpretedInfo getCurrentLocation() {
    if (currentNetworkLoc == null && currentGpsLoc == null) {
      InterpretedInfo failure = new InterpretedInfo();// known to be
                              // unsuccessful
                              // because it has no
                              // suggestions

      Toast.makeText(app,  "Sorry, we could not find your current location.", Toast.LENGTH_SHORT).show();
      return failure;
    }
    Location loc = currentGpsLoc;
    if (loc == null)
      loc = currentNetworkLoc;

    Interpreter interpreter = new Interpreter(app.campus);

        return interpreter.interpretLatLng((int) (loc.getLatitude() * 1E6),  (int) (loc.getLongitude() * 1E6));
  }
}
Java Source Code List
