Android Open Source - caddisfly-app-camera Location Utils

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Back to project page caddisfly-app-camera.

License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright (C) TernUp Research Labs/*from   w w  w.j a va2s  .c  om*/
 *
 * This file is part of Caddisfly
 *
 * Caddisfly is free software: you can redistribute it and modify it under the terms of
 * the GNU Affero General Public License (AGPL) as published by the Free Software Foundation,
 * either version 3 of the License or any later version.
 *
 * Caddisfly is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License included below for more details.
 *
 * The full license text can also be seen at <http://www.gnu.org/licenses/agpl.html>.
 */

package com.ternup.caddisfly.util;


import com.ternup.caddisfly.R;

import android.content.Context;
import android.location.Location;

/**
 * Defines app-wide constants and utilities
 */
public final class LocationUtils {

    /*
     * Define a request code to send to Google Play services
     * This code is returned in Activity.onActivityResult
     */
    public final static int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;

    /*
     * Constants for location update parameters
     */
    // Milliseconds per second
    public static final int MILLISECONDS_PER_SECOND = 1000;

    // The update interval
    public static final int UPDATE_INTERVAL_IN_SECONDS = 5;

    // Update interval in milliseconds
    public static final long UPDATE_INTERVAL_IN_MILLISECONDS =
            MILLISECONDS_PER_SECOND * UPDATE_INTERVAL_IN_SECONDS;

    // A fast interval ceiling
    public static final int FAST_CEILING_IN_SECONDS = 1;

    // A fast ceiling of update intervals, used when the app is visible
    public static final long FAST_INTERVAL_CEILING_IN_MILLISECONDS =
            MILLISECONDS_PER_SECOND * FAST_CEILING_IN_SECONDS;

    // Create an empty string for initializing strings
    public static final String EMPTY_STRING = "";

    /**
     * Get the latitude and longitude from the Location object returned by
     * Location Services.
     *
     * @param currentLocation A Location object containing the current location
     * @return The latitude and longitude of the current location, or null if no
     * location is available.
     */
    public static String getLatLng(Context context, Location currentLocation) {
        // If the location is valid
        if (currentLocation != null) {

            // Return the latitude and longitude as strings
            return context.getString(
                    R.string.latitude_longitude,
                    currentLocation.getLatitude(),
                    currentLocation.getLongitude());
        } else {

            // Otherwise, return the empty string
            return EMPTY_STRING;
        }
    }
}

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