be.ac.ucl.lfsab1509.llncampus.ExternalAppUtility.java Source code

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Here is the source code for be.ac.ucl.lfsab1509.llncampus.ExternalAppUtility.java

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package be.ac.ucl.lfsab1509.llncampus;

import org.apache.http.client.CookieStore;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpProtocolParams;

import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.util.Log;
import android.view.Gravity;
import android.widget.Toast;

/**
 * LLNCampus. A application for students at the UCL (Belgium).
Copyright (C) 2013 Benjamin Baugnies, Quentin De Coninck, Ahn Tuan Le Pham and Damien Mercier
Copyright (C) 2014 Quentin De Coninck
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * Utility class for invoking other Android applications
 */
public class ExternalAppUtility {
    private static CookieStore cookieStore = null;

    /**
     * Constructor
     */
    private ExternalAppUtility() {
        // Nothing to do ... 
    }

    /** 
     * Open a browser with the URL specified.
     * 
     * @param context 
     *          Application context. 
     * @param url 
     *          The URL.
     */
    public static void openBrowser(Context context, String url) {
        Uri uri = Uri.parse(url);
        openBrowser(context, uri);
    }

    /** 
     * Open a browser with the URI specified.
     * 
     * @param context 
     *          Application context. 
     * @param uri 
     *          The URI.
     */
    public static void openBrowser(Context context, Uri uri) {
        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
        context.startActivity(intent);
    }

    /**
     * Create a new HTTP client with always the same session of cookies.
     * This can be used for ADE connections for example.
     * 
     * @return An HttpClient. 
     */
    public static synchronized HttpClient getHttpClient() {
        final DefaultHttpClient httpClient = new DefaultHttpClient();
        if (cookieStore == null) {
            cookieStore = httpClient.getCookieStore();
        } else {
            httpClient.setCookieStore(cookieStore);
        }
        HttpProtocolParams.setUserAgent(httpClient.getParams(), "Mozilla 5/0");
        return httpClient;
    }

    /**
     * Start the Google Maps application and navigate the user to the specified location.
     * 
     * @param lat
     *          Destination latitude.
     * @param lon
     *          Destination longitude.
     * @param c
     *          Current context.
     */
    public static void startNavigation(float lat, float lon, Context c) {
        try {
            Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
                    Uri.parse("http://maps.google.com/maps?daddr=" + lat + "," + lon + "&dirflg=w"));
            intent.setComponent(
                    new ComponentName("com.google.android.apps.maps", "com.google.android.maps.MapsActivity"));
            c.startActivity(intent);

        } catch (ActivityNotFoundException e) { // If we don't have Google Maps
            Log.e("ExternalAppUtility", c.getString(R.string.no_google_maps));
            Toast t = Toast.makeText(LLNCampus.getContext().getApplicationContext(), R.string.no_google_maps,
                    Toast.LENGTH_LONG);
            t.setGravity(Gravity.CENTER, 0, 0);
            t.show();
        }
    }

    /**
     * Start the Google Maps application and navigate the user to the specified location.
     * 
     * @param lat
     *          Destination latitude.
     * @param lon
     *          Destination longitude.
     * @param c
     *          Current context.
     */
    public static void startNavigation(double lat, double lon, Context c) {
        startNavigation((float) lat, (float) lon, c);
    }

}