Java tutorial
/* LinConnect: Mirror Android notifications on Linux Desktop Copyright (C) 2013 Will Hauck 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/>. */ package com.harshad.linconnectclient; import android.annotation.SuppressLint; import android.app.Notification; import android.content.Context; import android.content.SharedPreferences; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.preference.PreferenceManager; import android.util.Base64; import android.widget.RemoteViews; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.mime.HttpMultipartMode; import org.apache.http.entity.mime.MultipartEntity; import org.apache.http.entity.mime.content.InputStreamBody; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.lang.reflect.Field; import java.util.ArrayList; @SuppressWarnings("deprecation") public class NotificationUtilities { public static boolean sendData(Context c, Notification n, String packageName) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c); ConnectivityManager connManager = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); // Check Wifi state, whether notifications are enabled globally, and // whether notifications are enabled for specific application if (prefs.getBoolean("pref_toggle", true) && prefs.getBoolean(packageName, true) && mWifi.isConnected()) { String ip = prefs.getString("pref_ip", "0.0.0.0:9090"); // Magically extract text from notification ArrayList<String> notificationData = NotificationUtilities.getNotificationText(n); // Use PackageManager to get application name and icon final PackageManager pm = c.getPackageManager(); ApplicationInfo ai; try { ai = pm.getApplicationInfo(packageName, 0); } catch (final NameNotFoundException e) { ai = null; } String notificationBody = ""; String notificationHeader = ""; // Create header and body of notification if (notificationData.size() > 0) { notificationHeader = notificationData.get(0); if (notificationData.size() > 1) { notificationBody = notificationData.get(1); } } else { return false; } for (int i = 2; i < notificationData.size(); i++) { notificationBody += "\n" + notificationData.get(i); } // Append application name to body if (pm.getApplicationLabel(ai) != null) { if (notificationBody.isEmpty()) { notificationBody = "via " + pm.getApplicationLabel(ai); } else { notificationBody += " (via " + pm.getApplicationLabel(ai) + ")"; } } // Setup HTTP request MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); // If the notification contains an icon, use it if (n.largeIcon != null) { entity.addPart("notificon", new InputStreamBody(ImageUtilities.bitmapToInputStream(n.largeIcon), "drawable.png")); } // Otherwise, use the application's icon else { entity.addPart("notificon", new InputStreamBody( ImageUtilities.bitmapToInputStream( ImageUtilities.drawableToBitmap(pm.getApplicationIcon(ai))), "drawable.png")); } HttpPost post = new HttpPost("http://" + ip + "/notif"); post.setEntity(entity); try { post.addHeader("notifheader", Base64.encodeToString(notificationHeader.getBytes("UTF-8"), Base64.URL_SAFE | Base64.NO_WRAP)); post.addHeader("notifdescription", Base64.encodeToString(notificationBody.getBytes("UTF-8"), Base64.URL_SAFE | Base64.NO_WRAP)); } catch (UnsupportedEncodingException e) { post.addHeader("notifheader", Base64.encodeToString(notificationHeader.getBytes(), Base64.URL_SAFE | Base64.NO_WRAP)); post.addHeader("notifdescription", Base64.encodeToString(notificationBody.getBytes(), Base64.URL_SAFE | Base64.NO_WRAP)); } // Send HTTP request HttpClient client = new DefaultHttpClient(); HttpResponse response; try { response = client.execute(post); String html = EntityUtils.toString(response.getEntity()); if (html.contains("true")) { return true; } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return false; } @SuppressLint("DefaultLocale") public static ArrayList<String> getNotificationText(Notification notification) { RemoteViews views = notification.contentView; Class<?> secretClass = views.getClass(); try { ArrayList<String> notificationData = new ArrayList<String>(); Field outerFields[] = secretClass.getDeclaredFields(); for (int i = 0; i < outerFields.length; i++) { if (!outerFields[i].getName().equals("mActions")) continue; outerFields[i].setAccessible(true); @SuppressWarnings("unchecked") ArrayList<Object> actions = (ArrayList<Object>) outerFields[i].get(views); for (Object action : actions) { Field innerFields[] = action.getClass().getDeclaredFields(); Object value = null; for (Field field : innerFields) { field.setAccessible(true); // Value field could possibly contain text if (field.getName().equals("value")) { value = field.get(action); } } // Check if value is a String if (value != null && value.getClass().getName().toUpperCase().contains("STRING")) { notificationData.add(value.toString()); } } return notificationData; } } catch (Exception e) { } return null; } }