Java tutorial
/* This file is part of Subsonic. Subsonic 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. Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>. Copyright 2014 (C) Scott Jackson */ package github.daneren2005.dsub.util; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.os.Build; import android.os.Handler; import android.support.v4.app.NotificationCompat; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.RemoteViews; import android.widget.TextView; import github.daneren2005.dsub.R; import github.daneren2005.dsub.activity.SubsonicActivity; import github.daneren2005.dsub.activity.SubsonicFragmentActivity; import github.daneren2005.dsub.domain.MusicDirectory; import github.daneren2005.dsub.domain.PlayerState; import github.daneren2005.dsub.provider.DSubWidgetProvider; import github.daneren2005.dsub.service.DownloadFile; import github.daneren2005.dsub.service.DownloadService; public final class Notifications { private static final String TAG = Notifications.class.getSimpleName(); // Notification IDs. public static final int NOTIFICATION_ID_PLAYING = 100; public static final int NOTIFICATION_ID_DOWNLOADING = 102; public static final String NOTIFICATION_SYNC_GROUP = "github.daneren2005.dsub.sync"; private static boolean playShowing = false; private static boolean downloadShowing = false; private static boolean downloadForeground = false; private static boolean persistentPlayingShowing = false; private final static Pair<Integer, Integer> NOTIFICATION_TEXT_COLORS = new Pair<Integer, Integer>(); public static void showPlayingNotification(final Context context, final DownloadService downloadService, final Handler handler, MusicDirectory.Entry song) { // Set the icon, scrolling text and timestamp final Notification notification = new Notification(R.drawable.stat_notify_playing, song.getTitle(), System.currentTimeMillis()); final boolean playing = downloadService.getPlayerState() == PlayerState.STARTED; if (playing) { notification.flags |= Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT; } boolean remote = downloadService.isRemoteEnabled(); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { RemoteViews expandedContentView = new RemoteViews(context.getPackageName(), R.layout.notification_expanded); setupViews(expandedContentView, context, song, true, playing, remote); notification.bigContentView = expandedContentView; notification.priority = Notification.PRIORITY_HIGH; } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { notification.visibility = Notification.VISIBILITY_PUBLIC; } RemoteViews smallContentView = new RemoteViews(context.getPackageName(), R.layout.notification); setupViews(smallContentView, context, song, false, playing, remote); notification.contentView = smallContentView; Intent notificationIntent = new Intent(context, SubsonicFragmentActivity.class); notificationIntent.putExtra(Constants.INTENT_EXTRA_NAME_DOWNLOAD, true); notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); notification.contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0); playShowing = true; if (downloadForeground && downloadShowing) { downloadForeground = false; handler.post(new Runnable() { @Override public void run() { downloadService.stopForeground(true); showDownloadingNotification(context, downloadService, handler, downloadService.getCurrentDownloading(), downloadService.getBackgroundDownloads().size()); downloadService.startForeground(NOTIFICATION_ID_PLAYING, notification); } }); } else { handler.post(new Runnable() { @Override public void run() { if (playing) { downloadService.startForeground(NOTIFICATION_ID_PLAYING, notification); } else { playShowing = false; persistentPlayingShowing = true; NotificationManager notificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); downloadService.stopForeground(false); notificationManager.notify(NOTIFICATION_ID_PLAYING, notification); } } }); } // Update widget DSubWidgetProvider.notifyInstances(context, downloadService, playing); } private static void setupViews(RemoteViews rv, Context context, MusicDirectory.Entry song, boolean expanded, boolean playing, boolean remote) { // Use the same text for the ticker and the expanded notification String title = song.getTitle(); String arist = song.getArtist(); String album = song.getAlbum(); // Set the album art. try { ImageLoader imageLoader = SubsonicActivity.getStaticImageLoader(context); Bitmap bitmap = null; if (imageLoader != null) { bitmap = imageLoader.getCachedImage(context, song, false); } if (bitmap == null) { // set default album art rv.setImageViewResource(R.id.notification_image, R.drawable.unknown_album); } else { rv.setImageViewBitmap(R.id.notification_image, bitmap); } } catch (Exception x) { Log.w(TAG, "Failed to get notification cover art", x); rv.setImageViewResource(R.id.notification_image, R.drawable.unknown_album); } // set the text for the notifications rv.setTextViewText(R.id.notification_title, title); rv.setTextViewText(R.id.notification_artist, arist); rv.setTextViewText(R.id.notification_album, album); boolean persistent = Util.getPreferences(context) .getBoolean(Constants.PREFERENCES_KEY_PERSISTENT_NOTIFICATION, false); if (persistent) { if (expanded) { rv.setImageViewResource(R.id.control_pause, playing ? R.drawable.notification_pause : R.drawable.notification_start); } else { rv.setImageViewResource(R.id.control_previous, playing ? R.drawable.notification_pause : R.drawable.notification_start); rv.setImageViewResource(R.id.control_pause, R.drawable.notification_forward); rv.setImageViewResource(R.id.control_next, R.drawable.notification_close); } } // Create actions for media buttons PendingIntent pendingIntent; int previous = 0, pause = 0, next = 0, close = 0; if (persistent && !expanded) { pause = R.id.control_previous; next = R.id.control_pause; close = R.id.control_next; } else { previous = R.id.control_previous; pause = R.id.control_pause; next = R.id.control_next; } if ((remote || persistent) && close == 0 && expanded) { close = R.id.notification_close; rv.setViewVisibility(close, View.VISIBLE); } if (previous > 0) { Intent prevIntent = new Intent("KEYCODE_MEDIA_PREVIOUS"); prevIntent.setComponent(new ComponentName(context, DownloadService.class)); prevIntent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PREVIOUS)); pendingIntent = PendingIntent.getService(context, 0, prevIntent, 0); rv.setOnClickPendingIntent(previous, pendingIntent); } if (pause > 0) { if (playing) { Intent pauseIntent = new Intent("KEYCODE_MEDIA_PLAY_PAUSE"); pauseIntent.setComponent(new ComponentName(context, DownloadService.class)); pauseIntent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE)); pendingIntent = PendingIntent.getService(context, 0, pauseIntent, 0); rv.setOnClickPendingIntent(pause, pendingIntent); } else { Intent prevIntent = new Intent("KEYCODE_MEDIA_START"); prevIntent.setComponent(new ComponentName(context, DownloadService.class)); prevIntent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PLAY)); pendingIntent = PendingIntent.getService(context, 0, prevIntent, 0); rv.setOnClickPendingIntent(pause, pendingIntent); } } if (next > 0) { Intent nextIntent = new Intent("KEYCODE_MEDIA_NEXT"); nextIntent.setComponent(new ComponentName(context, DownloadService.class)); nextIntent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_NEXT)); pendingIntent = PendingIntent.getService(context, 0, nextIntent, 0); rv.setOnClickPendingIntent(next, pendingIntent); } if (close > 0) { Intent prevIntent = new Intent("KEYCODE_MEDIA_STOP"); prevIntent.setComponent(new ComponentName(context, DownloadService.class)); prevIntent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_STOP)); pendingIntent = PendingIntent.getService(context, 0, prevIntent, 0); rv.setOnClickPendingIntent(close, pendingIntent); } } public static void hidePlayingNotification(final Context context, final DownloadService downloadService, Handler handler) { playShowing = false; // Remove notification and remove the service from the foreground handler.post(new Runnable() { @Override public void run() { downloadService.stopForeground(true); if (persistentPlayingShowing) { NotificationManager notificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.cancel(NOTIFICATION_ID_PLAYING); persistentPlayingShowing = false; } } }); // Get downloadNotification in foreground if playing if (downloadShowing) { showDownloadingNotification(context, downloadService, handler, downloadService.getCurrentDownloading(), downloadService.getBackgroundDownloads().size()); } // Update widget DSubWidgetProvider.notifyInstances(context, downloadService, false); } public static void showDownloadingNotification(final Context context, final DownloadService downloadService, Handler handler, DownloadFile file, int size) { Intent cancelIntent = new Intent(context, DownloadService.class); cancelIntent.setAction(DownloadService.CANCEL_DOWNLOADS); PendingIntent cancelPI = PendingIntent.getService(context, 0, cancelIntent, 0); String currentDownloading, currentSize; if (file != null) { currentDownloading = file.getSong().getTitle(); currentSize = Util.formatLocalizedBytes(file.getEstimatedSize(), context); } else { currentDownloading = "none"; currentSize = "0"; } NotificationCompat.Builder builder; builder = new NotificationCompat.Builder(context).setSmallIcon(android.R.drawable.stat_sys_download) .setContentTitle(context.getResources().getString(R.string.download_downloading_title, size)) .setContentText( context.getResources().getString(R.string.download_downloading_summary, currentDownloading)) .setStyle(new NotificationCompat.BigTextStyle().bigText(context.getResources().getString( R.string.download_downloading_summary_expanded, currentDownloading, currentSize))) .setProgress(10, 5, true).setOngoing(true).addAction(R.drawable.notification_close, context.getResources().getString(R.string.common_cancel), cancelPI); Intent notificationIntent = new Intent(context, SubsonicFragmentActivity.class); notificationIntent.putExtra(Constants.INTENT_EXTRA_NAME_DOWNLOAD_VIEW, true); notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); builder.setContentIntent(PendingIntent.getActivity(context, 2, notificationIntent, 0)); final Notification notification = builder.build(); downloadShowing = true; if (playShowing) { NotificationManager notificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(NOTIFICATION_ID_DOWNLOADING, notification); } else { downloadForeground = true; handler.post(new Runnable() { @Override public void run() { downloadService.startForeground(NOTIFICATION_ID_DOWNLOADING, notification); } }); } } public static void hideDownloadingNotification(final Context context, final DownloadService downloadService, Handler handler) { downloadShowing = false; if (playShowing) { NotificationManager notificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.cancel(NOTIFICATION_ID_DOWNLOADING); } else { downloadForeground = false; handler.post(new Runnable() { @Override public void run() { downloadService.stopForeground(true); } }); } } public static void showSyncNotification(final Context context, int stringId, String extra) { if (Util.getPreferences(context).getBoolean(Constants.PREFERENCES_KEY_SYNC_NOTIFICATION, true)) { if (extra == null) { extra = ""; } NotificationCompat.Builder builder; builder = new NotificationCompat.Builder(context).setSmallIcon(R.drawable.stat_notify_sync) .setContentTitle(context.getResources().getString(stringId)).setContentText(extra) .setStyle(new NotificationCompat.BigTextStyle().bigText(extra.replace(", ", "\n"))) .setOngoing(false).setGroup(NOTIFICATION_SYNC_GROUP) .setPriority(NotificationCompat.PRIORITY_LOW).setAutoCancel(true); Intent notificationIntent = new Intent(context, SubsonicFragmentActivity.class); notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); String tab = null, type = null; switch (stringId) { case R.string.sync_new_albums: type = "newest"; break; case R.string.sync_new_playlists: tab = "Playlist"; break; case R.string.sync_new_podcasts: tab = "Podcast"; break; case R.string.sync_new_starred: type = "starred"; break; } if (tab != null) { notificationIntent.putExtra(Constants.INTENT_EXTRA_FRAGMENT_TYPE, tab); } if (type != null) { notificationIntent.putExtra(Constants.INTENT_EXTRA_NAME_ALBUM_LIST_TYPE, type); } builder.setContentIntent(PendingIntent.getActivity(context, stringId, notificationIntent, 0)); NotificationManager notificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(stringId, builder.build()); } } }