Java tutorial
/* * Copyright (c) 2015 David Schulte * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package de.arcus.playmusicexporter2.services; import android.app.IntentService; import android.app.Notification; import android.app.NotificationManager; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.NotificationCompat; import de.arcus.framework.logger.Logger; import de.arcus.playmusicexporter2.R; import de.arcus.playmusiclib.PlayMusicManager; import de.arcus.playmusiclib.datasources.MusicTrackDataSource; import de.arcus.playmusiclib.items.MusicTrack; /** * The export service */ public class ExportService extends IntentService { /** * Constants for the server instance */ public static final String ARG_EXPORT_TRACK_ID = "track_id"; public static final String ARG_EXPORT_URI = "uri"; public static final String ARG_EXPORT_PATH = "path"; /** * Notification id */ public static final int NOTIFICATION_ID = 1; /** * The export notification */ protected NotificationCompat.Builder mNotificationBuilder; /** * The number of tracks that needs to be exported */ protected int mTracksTotal; /** * The number of tracks that were exported */ protected int mTracksDone; /** * The number of tracks that were not exported */ protected int mTracksFailed; /** * The current track we are exporting */ protected MusicTrack mTrackCurrent; /** * The export finished */ protected boolean mFinished; /** * Creates a new export service */ public ExportService() { super("ExportService"); } @Override public void onCreate() { super.onCreate(); Logger.getInstance().logDebug("ExportService", "Start"); // Creates a notification builder mNotificationBuilder = new NotificationCompat.Builder(this); } @Override public void onDestroy() { super.onDestroy(); // Finish Logger.getInstance().logDebug("ExportService", "End"); mFinished = true; updateNotification(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { // Count mTracksTotal++; return super.onStartCommand(intent, flags, startId); } /** * Updates the notification. * Sets the data in {@link this.mNotificationBuilder} */ protected void updateNotification() { // Gets the notification manager NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); if (mFinished) { // Clear the progress mNotificationBuilder.setProgress(0, 0, false); mNotificationBuilder.setSmallIcon(R.drawable.ic_action_accept); mNotificationBuilder.setAutoCancel(false); mNotificationBuilder.setContentTitle(getString(R.string.notification_export_finished_title)); if (mTracksTotal == 1) { mNotificationBuilder.setContentText( getString(R.string.notification_export_finished_single_summery, mTrackCurrent.getTitle())); } else { mNotificationBuilder.setContentText( getString(R.string.notification_export_finished_summery, mTracksDone, mTracksTotal)); } } else { // Sets the progress mNotificationBuilder.setProgress(mTracksTotal, mTracksDone, false); mNotificationBuilder.setSmallIcon(R.drawable.ic_action_download); mNotificationBuilder.setAutoCancel(true); if (mTrackCurrent != null) { // Sets the title mNotificationBuilder.setContentTitle(mTrackCurrent.getTitle()); if (mTracksTotal == 1) { mNotificationBuilder .setContentText(getString(R.string.notification_export_working_single_summery)); } else { mNotificationBuilder.setContentText( getString(R.string.notification_export_working_summery, mTracksDone + 1, mTracksTotal)); } } } // Build the notification Notification notification = mNotificationBuilder.build(); // Show the notification and replace the older once with the same id notificationManager.notify(NOTIFICATION_ID, notification); } /** * New service request * @param intent Data for the exporter */ @Override protected void onHandleIntent(Intent intent) { // Get the parameter Bundle bundle = intent.getExtras(); // Gets the track information long trackID = bundle.getLong(ARG_EXPORT_TRACK_ID); Uri uri = Uri.parse(bundle.getString(ARG_EXPORT_URI)); String path = bundle.getString(ARG_EXPORT_PATH); PlayMusicManager playMusicManager = PlayMusicManager.getInstance(); if (playMusicManager != null) { // Creates a new data source to get the selected track MusicTrackDataSource musicTrackDataSource = new MusicTrackDataSource(playMusicManager); // Gets the track mTrackCurrent = musicTrackDataSource.getById(trackID); if (mTrackCurrent != null) { // Updates the notification updateNotification(); // Exports the song if (!playMusicManager.exportMusicTrack(mTrackCurrent, uri, path)) { // Export failed mTracksFailed++; } } else { // Export failed mTracksFailed++; } } else { // Export failed mTracksFailed++; } mTracksDone++; // Updates the notification updateNotification(); } }