Java tutorial
/** * Copyright (C) 2011 Whisper Systems * * 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 org.fdroid.enigtext.notifications; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.database.Cursor; import android.graphics.BitmapFactory; import android.graphics.Color; import android.media.AudioManager; import android.media.MediaPlayer; import android.net.Uri; import android.preference.PreferenceManager; import android.support.v4.app.NotificationCompat; import android.support.v4.app.NotificationCompat.BigTextStyle; import android.support.v4.app.NotificationCompat.InboxStyle; import android.text.Spannable; import android.text.SpannableString; import android.text.SpannableStringBuilder; import android.text.TextUtils; import android.text.style.StyleSpan; import android.util.Log; import org.fdroid.enigtext.ApplicationPreferencesActivity; import org.fdroid.enigtext.R; import org.fdroid.enigtext.RoutingActivity; import org.fdroid.enigtext.crypto.MasterSecret; import org.fdroid.enigtext.database.DatabaseFactory; import org.fdroid.enigtext.database.MmsSmsDatabase; import org.fdroid.enigtext.database.model.MessageRecord; import org.fdroid.enigtext.recipients.Recipient; import org.fdroid.enigtext.recipients.Recipients; import java.io.IOException; import java.util.List; /** * Handles posting system notifications for new messages. * * * @author Moxie Marlinspike */ public class MessageNotifier { public static final int NOTIFICATION_ID = 1338; private volatile static long visibleThread = -1; public static void setVisibleThread(long threadId) { visibleThread = threadId; } public static void notifyMessageDeliveryFailed(Context context, Recipients recipients, long threadId) { if (visibleThread == threadId) { sendInThreadNotification(context); } else { Intent intent = new Intent(context, RoutingActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); intent.putExtra("recipients", recipients); intent.putExtra("thread_id", threadId); intent.setData((Uri.parse("custom://" + System.currentTimeMillis()))); NotificationCompat.Builder builder = new NotificationCompat.Builder(context); builder.setSmallIcon(R.drawable.icon_notification); builder.setLargeIcon( BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_list_alert_sms_failed)); builder.setContentTitle(context.getString(R.string.MessageNotifier_message_delivery_failed)); builder.setContentText(context.getString(R.string.MessageNotifier_failed_to_deliver_message)); builder.setTicker(context.getString(R.string.MessageNotifier_error_delivering_message)); builder.setContentIntent(PendingIntent.getActivity(context, 0, intent, 0)); builder.setAutoCancel(true); setNotificationAlarms(context, builder, true); ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).notify((int) threadId, builder.build()); } } public static void updateNotification(Context context, MasterSecret masterSecret) { if (!PreferenceManager.getDefaultSharedPreferences(context) .getBoolean(ApplicationPreferencesActivity.NOTIFICATION_PREF, true)) { return; } updateNotification(context, masterSecret, false); } public static void updateNotification(Context context, MasterSecret masterSecret, long threadId) { if (!PreferenceManager.getDefaultSharedPreferences(context) .getBoolean(ApplicationPreferencesActivity.NOTIFICATION_PREF, true)) { return; } if (visibleThread == threadId) { DatabaseFactory.getThreadDatabase(context).setRead(threadId); sendInThreadNotification(context); } else { updateNotification(context, masterSecret, true); } } private static void updateNotification(Context context, MasterSecret masterSecret, boolean signal) { Cursor cursor = null; try { cursor = DatabaseFactory.getMmsSmsDatabase(context).getUnread(); if (cursor == null || cursor.isAfterLast()) { ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)) .cancel(NOTIFICATION_ID); return; } NotificationState notificationState = constructNotificationState(context, masterSecret, cursor); if (notificationState.hasMultipleThreads()) { sendMultipleThreadNotification(context, masterSecret, notificationState, signal); } else { sendSingleThreadNotification(context, masterSecret, notificationState, signal); } } finally { if (cursor != null) cursor.close(); } } private static void sendSingleThreadNotification(Context context, MasterSecret masterSecret, NotificationState notificationState, boolean signal) { List<NotificationItem> notifications = notificationState.getNotifications(); NotificationCompat.Builder builder = new NotificationCompat.Builder(context); Recipient recipient = notifications.get(0).getIndividualRecipient(); builder.setSmallIcon(R.drawable.icon_notification); builder.setLargeIcon(recipient.getContactPhoto()); builder.setContentTitle(recipient.toShortString()); builder.setContentText(notifications.get(0).getText()); builder.setContentIntent(notifications.get(0).getPendingIntent(context)); if (masterSecret != null) { builder.addAction(R.drawable.check, context.getString(R.string.MessageNotifier_mark_as_read), notificationState.getMarkAsReadIntent(context, masterSecret)); } SpannableStringBuilder content = new SpannableStringBuilder(); for (NotificationItem item : notifications) { content.append(item.getBigStyleSummary()); content.append('\n'); } builder.setStyle(new BigTextStyle().bigText(content)); setNotificationAlarms(context, builder, signal); if (signal) { builder.setTicker(notifications.get(0).getTickerText()); } ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).notify(NOTIFICATION_ID, builder.build()); } private static void sendMultipleThreadNotification(Context context, MasterSecret masterSecret, NotificationState notificationState, boolean signal) { List<NotificationItem> notifications = notificationState.getNotifications(); NotificationCompat.Builder builder = new NotificationCompat.Builder(context); builder.setSmallIcon(R.drawable.icon_notification); builder.setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.icon_notification)); builder.setContentTitle(String.format(context.getString(R.string.MessageNotifier_d_new_messages), notificationState.getMessageCount())); builder.setContentText(String.format(context.getString(R.string.MessageNotifier_most_recent_from_s), notifications.get(0).getIndividualRecipientName())); builder.setContentIntent( PendingIntent.getActivity(context, 0, new Intent(context, RoutingActivity.class), 0)); if (masterSecret != null) { builder.addAction(R.drawable.check, context.getString(R.string.MessageNotifier_mark_all_as_read), notificationState.getMarkAsReadIntent(context, masterSecret)); } InboxStyle style = new InboxStyle(); for (NotificationItem item : notifications) { style.addLine(item.getTickerText()); } builder.setStyle(style); setNotificationAlarms(context, builder, signal); if (signal) { builder.setTicker(notifications.get(0).getTickerText()); } ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).notify(NOTIFICATION_ID, builder.build()); } private static void sendInThreadNotification(Context context) { try { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context); if (!sp.getBoolean(ApplicationPreferencesActivity.IN_THREAD_NOTIFICATION_PREF, true)) { return; } String ringtone = sp.getString(ApplicationPreferencesActivity.RINGTONE_PREF, null); if (ringtone == null) return; Uri uri = Uri.parse(ringtone); MediaPlayer player = new MediaPlayer(); player.setAudioStreamType(AudioManager.STREAM_NOTIFICATION); player.setDataSource(context, uri); player.setLooping(false); player.setVolume(0.25f, 0.25f); player.prepare(); final AudioManager audioManager = ((AudioManager) context.getSystemService(Context.AUDIO_SERVICE)); audioManager.requestAudioFocus(null, AudioManager.STREAM_NOTIFICATION, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK); player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { audioManager.abandonAudioFocus(null); } }); player.start(); } catch (IOException ioe) { Log.w("MessageNotifier", ioe); } } private static NotificationState constructNotificationState(Context context, MasterSecret masterSecret, Cursor cursor) { NotificationState notificationState = new NotificationState(); MessageRecord record; MmsSmsDatabase.Reader reader; if (masterSecret == null) reader = DatabaseFactory.getMmsSmsDatabase(context).readerFor(cursor); else reader = DatabaseFactory.getMmsSmsDatabase(context).readerFor(cursor, masterSecret); while ((record = reader.getNext()) != null) { Recipient recipient = record.getIndividualRecipient(); Recipients recipients = record.getRecipients(); long threadId = record.getThreadId(); SpannableString body = record.getDisplayBody(); Uri image = null; // XXXX This is so fucked up. FIX ME! if (body.toString().equals(context.getString(R.string.MessageDisplayHelper_decrypting_please_wait))) { body = new SpannableString(context.getString(R.string.MessageNotifier_encrypted_message)); body.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } notificationState.addNotification(new NotificationItem(recipient, recipients, threadId, body, image)); } reader.close(); return notificationState; } private static void setNotificationAlarms(Context context, NotificationCompat.Builder builder, boolean signal) { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context); String ringtone = sp.getString(ApplicationPreferencesActivity.RINGTONE_PREF, null); boolean vibrate = sp.getBoolean(ApplicationPreferencesActivity.VIBRATE_PREF, true); String ledColor = sp.getString(ApplicationPreferencesActivity.LED_COLOR_PREF, "green"); String ledBlinkPattern = sp.getString(ApplicationPreferencesActivity.LED_BLINK_PREF, "500,2000"); String ledBlinkPatternCustom = sp.getString(ApplicationPreferencesActivity.LED_BLINK_PREF_CUSTOM, "500,2000"); String[] blinkPatternArray = parseBlinkPattern(ledBlinkPattern, ledBlinkPatternCustom); builder.setSound(TextUtils.isEmpty(ringtone) || !signal ? null : Uri.parse(ringtone)); if (signal && vibrate) builder.setDefaults(Notification.DEFAULT_VIBRATE); builder.setLights(Color.parseColor(ledColor), Integer.parseInt(blinkPatternArray[0]), Integer.parseInt(blinkPatternArray[1])); } private static String[] parseBlinkPattern(String blinkPattern, String blinkPatternCustom) { if (blinkPattern.equals("custom")) blinkPattern = blinkPatternCustom; return blinkPattern.split(","); } }