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Diffstat (limited to 'subsonic-android/src/net/sourceforge/subsonic/androidapp/util/Util.java')
| -rw-r--r-- | subsonic-android/src/net/sourceforge/subsonic/androidapp/util/Util.java | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/Util.java b/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/Util.java new file mode 100644 index 00000000..9a8c692d --- /dev/null +++ b/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/Util.java @@ -0,0 +1,829 @@ +/* + 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 2009 (C) Sindre Mehus + */ +package net.sourceforge.subsonic.androidapp.util; + +import android.app.Activity; +import android.app.AlertDialog; +import android.app.Notification; +import android.app.NotificationManager; +import android.app.PendingIntent; +import android.app.Service; +import android.content.ComponentName; +import android.content.Context; +import android.content.DialogInterface; +import android.content.Intent; +import android.content.SharedPreferences; +import android.content.res.Resources; +import android.graphics.Bitmap; +import android.graphics.drawable.BitmapDrawable; +import android.graphics.drawable.Drawable; +import android.media.AudioManager; +import android.net.ConnectivityManager; +import android.net.NetworkInfo; +import android.os.Environment; +import android.os.Handler; +import android.util.Log; +import android.view.Gravity; +import android.view.ViewGroup; +import android.widget.LinearLayout; +import android.widget.RemoteViews; +import android.widget.TextView; +import android.widget.Toast; +import net.sourceforge.subsonic.androidapp.R; +import net.sourceforge.subsonic.androidapp.activity.DownloadActivity; +import net.sourceforge.subsonic.androidapp.domain.MusicDirectory; +import net.sourceforge.subsonic.androidapp.domain.PlayerState; +import net.sourceforge.subsonic.androidapp.domain.RepeatMode; +import net.sourceforge.subsonic.androidapp.domain.Version; +import net.sourceforge.subsonic.androidapp.provider.SubsonicAppWidgetProvider; +import net.sourceforge.subsonic.androidapp.receiver.MediaButtonIntentReceiver; +import net.sourceforge.subsonic.androidapp.service.DownloadServiceImpl; +import org.apache.http.HttpEntity; + +import java.io.ByteArrayOutputStream; +import java.io.Closeable; +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.io.UnsupportedEncodingException; +import java.lang.reflect.Constructor; +import java.lang.reflect.Method; +import java.security.MessageDigest; +import java.text.DecimalFormat; +import java.text.NumberFormat; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; + +/** + * @author Sindre Mehus + * @version $Id$ + */ +public final class Util { + + private static final String TAG = Util.class.getSimpleName(); + + private static final DecimalFormat GIGA_BYTE_FORMAT = new DecimalFormat("0.00 GB"); + private static final DecimalFormat MEGA_BYTE_FORMAT = new DecimalFormat("0.00 MB"); + private static final DecimalFormat KILO_BYTE_FORMAT = new DecimalFormat("0 KB"); + + private static DecimalFormat GIGA_BYTE_LOCALIZED_FORMAT = null; + private static DecimalFormat MEGA_BYTE_LOCALIZED_FORMAT = null; + private static DecimalFormat KILO_BYTE_LOCALIZED_FORMAT = null; + private static DecimalFormat BYTE_LOCALIZED_FORMAT = null; + + public static final String EVENT_META_CHANGED = "net.sourceforge.subsonic.androidapp.EVENT_META_CHANGED"; + public static final String EVENT_PLAYSTATE_CHANGED = "net.sourceforge.subsonic.androidapp.EVENT_PLAYSTATE_CHANGED"; + + private static final Map<Integer, Version> SERVER_REST_VERSIONS = new ConcurrentHashMap<Integer, Version>(); + + // Used by hexEncode() + private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; + + private final static Pair<Integer, Integer> NOTIFICATION_TEXT_COLORS = new Pair<Integer, Integer>(); + private static Toast toast; + + private Util() { + } + + public static boolean isOffline(Context context) { + return getActiveServer(context) == 0; + } + + public static boolean isScreenLitOnDownload(Context context) { + SharedPreferences prefs = getPreferences(context); + return prefs.getBoolean(Constants.PREFERENCES_KEY_SCREEN_LIT_ON_DOWNLOAD, false); + } + + public static RepeatMode getRepeatMode(Context context) { + SharedPreferences prefs = getPreferences(context); + return RepeatMode.valueOf(prefs.getString(Constants.PREFERENCES_KEY_REPEAT_MODE, RepeatMode.OFF.name())); + } + + public static void setRepeatMode(Context context, RepeatMode repeatMode) { + SharedPreferences prefs = getPreferences(context); + SharedPreferences.Editor editor = prefs.edit(); + editor.putString(Constants.PREFERENCES_KEY_REPEAT_MODE, repeatMode.name()); + editor.commit(); + } + + public static boolean isScrobblingEnabled(Context context) { + if (isOffline(context)) { + return false; + } + SharedPreferences prefs = getPreferences(context); + return prefs.getBoolean(Constants.PREFERENCES_KEY_SCROBBLE, false); + } + + public static void setActiveServer(Context context, int instance) { + SharedPreferences prefs = getPreferences(context); + SharedPreferences.Editor editor = prefs.edit(); + editor.putInt(Constants.PREFERENCES_KEY_SERVER_INSTANCE, instance); + editor.commit(); + } + + public static int getActiveServer(Context context) { + SharedPreferences prefs = getPreferences(context); + return prefs.getInt(Constants.PREFERENCES_KEY_SERVER_INSTANCE, 1); + } + + public static String getServerName(Context context, int instance) { + if (instance == 0) { + return context.getResources().getString(R.string.main_offline); + } + SharedPreferences prefs = getPreferences(context); + return prefs.getString(Constants.PREFERENCES_KEY_SERVER_NAME + instance, null); + } + + public static void setServerRestVersion(Context context, Version version) { + SERVER_REST_VERSIONS.put(getActiveServer(context), version); + } + + public static Version getServerRestVersion(Context context) { + return SERVER_REST_VERSIONS.get(getActiveServer(context)); + } + + public static void setSelectedMusicFolderId(Context context, String musicFolderId) { + int instance = getActiveServer(context); + SharedPreferences prefs = getPreferences(context); + SharedPreferences.Editor editor = prefs.edit(); + editor.putString(Constants.PREFERENCES_KEY_MUSIC_FOLDER_ID + instance, musicFolderId); + editor.commit(); + } + + public static String getSelectedMusicFolderId(Context context) { + SharedPreferences prefs = getPreferences(context); + int instance = getActiveServer(context); + return prefs.getString(Constants.PREFERENCES_KEY_MUSIC_FOLDER_ID + instance, null); + } + + public static String getTheme(Context context) { + SharedPreferences prefs = getPreferences(context); + return prefs.getString(Constants.PREFERENCES_KEY_THEME, null); + } + + public static int getMaxBitrate(Context context) { + ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + NetworkInfo networkInfo = manager.getActiveNetworkInfo(); + if (networkInfo == null) { + return 0; + } + + boolean wifi = networkInfo.getType() == ConnectivityManager.TYPE_WIFI; + SharedPreferences prefs = getPreferences(context); + return Integer.parseInt(prefs.getString(wifi ? Constants.PREFERENCES_KEY_MAX_BITRATE_WIFI : Constants.PREFERENCES_KEY_MAX_BITRATE_MOBILE, "0")); + } + + public static int getPreloadCount(Context context) { + SharedPreferences prefs = getPreferences(context); + int preloadCount = Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_PRELOAD_COUNT, "-1")); + return preloadCount == -1 ? Integer.MAX_VALUE : preloadCount; + } + + public static int getCacheSizeMB(Context context) { + SharedPreferences prefs = getPreferences(context); + int cacheSize = Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_CACHE_SIZE, "-1")); + return cacheSize == -1 ? Integer.MAX_VALUE : cacheSize; + } + + public static String getRestUrl(Context context, String method) { + StringBuilder builder = new StringBuilder(); + + SharedPreferences prefs = getPreferences(context); + + int instance = prefs.getInt(Constants.PREFERENCES_KEY_SERVER_INSTANCE, 1); + String serverUrl = prefs.getString(Constants.PREFERENCES_KEY_SERVER_URL + instance, null); + String username = prefs.getString(Constants.PREFERENCES_KEY_USERNAME + instance, null); + String password = prefs.getString(Constants.PREFERENCES_KEY_PASSWORD + instance, null); + + // Slightly obfuscate password + password = "enc:" + Util.utf8HexEncode(password); + + builder.append(serverUrl); + if (builder.charAt(builder.length() - 1) != '/') { + builder.append("/"); + } + builder.append("rest/").append(method).append(".view"); + builder.append("?u=").append(username); + builder.append("&p=").append(password); + builder.append("&v=").append(Constants.REST_PROTOCOL_VERSION); + builder.append("&c=").append(Constants.REST_CLIENT_ID); + + return builder.toString(); + } + + public static SharedPreferences getPreferences(Context context) { + return context.getSharedPreferences(Constants.PREFERENCES_FILE_NAME, 0); + } + + public static String getContentType(HttpEntity entity) { + if (entity == null || entity.getContentType() == null) { + return null; + } + return entity.getContentType().getValue(); + } + + public static int getRemainingTrialDays(Context context) { + SharedPreferences prefs = getPreferences(context); + long installTime = prefs.getLong(Constants.PREFERENCES_KEY_INSTALL_TIME, 0L); + + if (installTime == 0L) { + installTime = System.currentTimeMillis(); + SharedPreferences.Editor editor = prefs.edit(); + editor.putLong(Constants.PREFERENCES_KEY_INSTALL_TIME, installTime); + editor.commit(); + } + + long now = System.currentTimeMillis(); + long millisPerDay = 24L * 60L * 60L * 1000L; + int daysSinceInstall = (int) ((now - installTime) / millisPerDay); + return Math.max(0, Constants.FREE_TRIAL_DAYS - daysSinceInstall); + } + + /** + * Get the contents of an <code>InputStream</code> as a <code>byte[]</code>. + * <p/> + * This method buffers the input internally, so there is no need to use a + * <code>BufferedInputStream</code>. + * + * @param input the <code>InputStream</code> to read from + * @return the requested byte array + * @throws NullPointerException if the input is null + * @throws IOException if an I/O error occurs + */ + public static byte[] toByteArray(InputStream input) throws IOException { + ByteArrayOutputStream output = new ByteArrayOutputStream(); + copy(input, output); + return output.toByteArray(); + } + + public static long copy(InputStream input, OutputStream output) + throws IOException { + byte[] buffer = new byte[1024 * 4]; + long count = 0; + int n; + while (-1 != (n = input.read(buffer))) { + output.write(buffer, 0, n); + count += n; + } + return count; + } + + public static void atomicCopy(File from, File to) throws IOException { + FileInputStream in = null; + FileOutputStream out = null; + File tmp = null; + try { + tmp = new File(to.getPath() + ".tmp"); + in = new FileInputStream(from); + out = new FileOutputStream(tmp); + in.getChannel().transferTo(0, from.length(), out.getChannel()); + out.close(); + if (!tmp.renameTo(to)) { + throw new IOException("Failed to rename " + tmp + " to " + to); + } + Log.i(TAG, "Copied " + from + " to " + to); + } catch (IOException x) { + close(out); + delete(to); + throw x; + } finally { + close(in); + close(out); + delete(tmp); + } + } + + public static void close(Closeable closeable) { + try { + if (closeable != null) { + closeable.close(); + } + } catch (Throwable x) { + // Ignored + } + } + + public static boolean delete(File file) { + if (file != null && file.exists()) { + if (!file.delete()) { + Log.w(TAG, "Failed to delete file " + file); + return false; + } + Log.i(TAG, "Deleted file " + file); + } + return true; + } + + public static void toast(Context context, int messageId) { + toast(context, messageId, true); + } + + public static void toast(Context context, int messageId, boolean shortDuration) { + toast(context, context.getString(messageId), shortDuration); + } + + public static void toast(Context context, String message) { + toast(context, message, true); + } + + public static void toast(Context context, String message, boolean shortDuration) { + if (toast == null) { + toast = Toast.makeText(context, message, shortDuration ? Toast.LENGTH_SHORT : Toast.LENGTH_LONG); + toast.setGravity(Gravity.CENTER, 0, 0); + } else { + toast.setText(message); + toast.setDuration(shortDuration ? Toast.LENGTH_SHORT : Toast.LENGTH_LONG); + } + toast.show(); + } + + /** + * Converts a byte-count to a formatted string suitable for display to the user. + * For instance: + * <ul> + * <li><code>format(918)</code> returns <em>"918 B"</em>.</li> + * <li><code>format(98765)</code> returns <em>"96 KB"</em>.</li> + * <li><code>format(1238476)</code> returns <em>"1.2 MB"</em>.</li> + * </ul> + * This method assumes that 1 KB is 1024 bytes. + * To get a localized string, please use formatLocalizedBytes instead. + * + * @param byteCount The number of bytes. + * @return The formatted string. + */ + public static synchronized String formatBytes(long byteCount) { + + // More than 1 GB? + if (byteCount >= 1024 * 1024 * 1024) { + NumberFormat gigaByteFormat = GIGA_BYTE_FORMAT; + return gigaByteFormat.format((double) byteCount / (1024 * 1024 * 1024)); + } + + // More than 1 MB? + if (byteCount >= 1024 * 1024) { + NumberFormat megaByteFormat = MEGA_BYTE_FORMAT; + return megaByteFormat.format((double) byteCount / (1024 * 1024)); + } + + // More than 1 KB? + if (byteCount >= 1024) { + NumberFormat kiloByteFormat = KILO_BYTE_FORMAT; + return kiloByteFormat.format((double) byteCount / 1024); + } + + return byteCount + " B"; + } + + /** + * Converts a byte-count to a formatted string suitable for display to the user. + * For instance: + * <ul> + * <li><code>format(918)</code> returns <em>"918 B"</em>.</li> + * <li><code>format(98765)</code> returns <em>"96 KB"</em>.</li> + * <li><code>format(1238476)</code> returns <em>"1.2 MB"</em>.</li> + * </ul> + * This method assumes that 1 KB is 1024 bytes. + * This version of the method returns a localized string. + * + * @param byteCount The number of bytes. + * @return The formatted string. + */ + public static synchronized String formatLocalizedBytes(long byteCount, Context context) { + + // More than 1 GB? + if (byteCount >= 1024 * 1024 * 1024) { + if (GIGA_BYTE_LOCALIZED_FORMAT == null) { + GIGA_BYTE_LOCALIZED_FORMAT = new DecimalFormat(context.getResources().getString(R.string.util_bytes_format_gigabyte)); + } + + return GIGA_BYTE_LOCALIZED_FORMAT.format((double) byteCount / (1024 * 1024 * 1024)); + } + + // More than 1 MB? + if (byteCount >= 1024 * 1024) { + if (MEGA_BYTE_LOCALIZED_FORMAT == null) { + MEGA_BYTE_LOCALIZED_FORMAT = new DecimalFormat(context.getResources().getString(R.string.util_bytes_format_megabyte)); + } + + return MEGA_BYTE_LOCALIZED_FORMAT.format((double) byteCount / (1024 * 1024)); + } + + // More than 1 KB? + if (byteCount >= 1024) { + if (KILO_BYTE_LOCALIZED_FORMAT == null) { + KILO_BYTE_LOCALIZED_FORMAT = new DecimalFormat(context.getResources().getString(R.string.util_bytes_format_kilobyte)); + } + + return KILO_BYTE_LOCALIZED_FORMAT.format((double) byteCount / 1024); + } + + if (BYTE_LOCALIZED_FORMAT == null) { + BYTE_LOCALIZED_FORMAT = new DecimalFormat(context.getResources().getString(R.string.util_bytes_format_byte)); + } + + return BYTE_LOCALIZED_FORMAT.format((double) byteCount); + } + + public static String formatDuration(Integer seconds) { + if (seconds == null) { + return null; + } + + int minutes = seconds / 60; + int secs = seconds % 60; + + StringBuilder builder = new StringBuilder(6); + builder.append(minutes).append(":"); + if (secs < 10) { + builder.append("0"); + } + builder.append(secs); + return builder.toString(); + } + + public static boolean equals(Object object1, Object object2) { + if (object1 == object2) { + return true; + } + if (object1 == null || object2 == null) { + return false; + } + return object1.equals(object2); + + } + + /** + * Encodes the given string by using the hexadecimal representation of its UTF-8 bytes. + * + * @param s The string to encode. + * @return The encoded string. + */ + public static String utf8HexEncode(String s) { + if (s == null) { + return null; + } + byte[] utf8; + try { + utf8 = s.getBytes(Constants.UTF_8); + } catch (UnsupportedEncodingException x) { + throw new RuntimeException(x); + } + return hexEncode(utf8); + } + + /** + * Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. + * The returned array will be double the length of the passed array, as it takes two characters to represent any + * given byte. + * + * @param data Bytes to convert to hexadecimal characters. + * @return A string containing hexadecimal characters. + */ + public static String hexEncode(byte[] data) { + int length = data.length; + char[] out = new char[length << 1]; + // two characters form the hex value. + for (int i = 0, j = 0; i < length; i++) { + out[j++] = HEX_DIGITS[(0xF0 & data[i]) >>> 4]; + out[j++] = HEX_DIGITS[0x0F & data[i]]; + } + return new String(out); + } + + /** + * Calculates the MD5 digest and returns the value as a 32 character hex string. + * + * @param s Data to digest. + * @return MD5 digest as a hex string. + */ + public static String md5Hex(String s) { + if (s == null) { + return null; + } + + try { + MessageDigest md5 = MessageDigest.getInstance("MD5"); + return hexEncode(md5.digest(s.getBytes(Constants.UTF_8))); + } catch (Exception x) { + throw new RuntimeException(x.getMessage(), x); + } + } + + public static boolean isNetworkConnected(Context context) { + ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + NetworkInfo networkInfo = manager.getActiveNetworkInfo(); + boolean connected = networkInfo != null && networkInfo.isConnected(); + + boolean wifiConnected = connected && networkInfo.getType() == ConnectivityManager.TYPE_WIFI; + boolean wifiRequired = isWifiRequiredForDownload(context); + + return connected && (!wifiRequired || wifiConnected); + } + + public static boolean isExternalStoragePresent() { + return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()); + } + + private static boolean isWifiRequiredForDownload(Context context) { + SharedPreferences prefs = getPreferences(context); + return prefs.getBoolean(Constants.PREFERENCES_KEY_WIFI_REQUIRED_FOR_DOWNLOAD, false); + } + + public static void info(Context context, int titleId, int messageId) { + showDialog(context, android.R.drawable.ic_dialog_info, titleId, messageId); + } + + private static void showDialog(Context context, int icon, int titleId, int messageId) { + new AlertDialog.Builder(context) + .setIcon(icon) + .setTitle(titleId) + .setMessage(messageId) + .setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() { + @Override + public void onClick(DialogInterface dialog, int i) { + dialog.dismiss(); + } + }) + .show(); + } + + public static void showPlayingNotification(final Context context, final DownloadServiceImpl downloadService, Handler handler, MusicDirectory.Entry song) { + + // Use the same text for the ticker and the expanded notification + String title = song.getTitle(); + String text = song.getArtist(); + + // Set the icon, scrolling text and timestamp + final Notification notification = new Notification(R.drawable.stat_notify_playing, title, System.currentTimeMillis()); + notification.flags |= Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT; + + RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.notification); + + // Set the album art. + try { + int size = context.getResources().getDrawable(R.drawable.unknown_album).getIntrinsicHeight(); + Bitmap bitmap = FileUtil.getAlbumArtBitmap(context, song, size); + if (bitmap == null) { + // set default album art + contentView.setImageViewResource(R.id.notification_image, R.drawable.unknown_album); + } else { + contentView.setImageViewBitmap(R.id.notification_image, bitmap); + } + } catch (Exception x) { + Log.w(TAG, "Failed to get notification cover art", x); + contentView.setImageViewResource(R.id.notification_image, R.drawable.unknown_album); + } + + // set the text for the notifications + contentView.setTextViewText(R.id.notification_title, title); + contentView.setTextViewText(R.id.notification_artist, text); + + Pair<Integer, Integer> colors = getNotificationTextColors(context); + if (colors.getFirst() != null) { + contentView.setTextColor(R.id.notification_title, colors.getFirst()); + } + if (colors.getSecond() != null) { + contentView.setTextColor(R.id.notification_artist, colors.getSecond()); + } + + notification.contentView = contentView; + + Intent notificationIntent = new Intent(context, DownloadActivity.class); + notification.contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0); + + // Send the notification and put the service in the foreground. + handler.post(new Runnable() { + @Override + public void run() { + startForeground(downloadService, Constants.NOTIFICATION_ID_PLAYING, notification); + } + }); + + // Update widget + SubsonicAppWidgetProvider.getInstance().notifyChange(context, downloadService, true); + } + + public static void hidePlayingNotification(final Context context, final DownloadServiceImpl downloadService, Handler handler) { + + // Remove notification and remove the service from the foreground + handler.post(new Runnable() { + @Override + public void run() { + stopForeground(downloadService, true); + } + }); + + // Update widget + SubsonicAppWidgetProvider.getInstance().notifyChange(context, downloadService, false); + } + + public static void sleepQuietly(long millis) { + try { + Thread.sleep(millis); + } catch (InterruptedException x) { + Log.w(TAG, "Interrupted from sleep.", x); + } + } + + public static void startActivityWithoutTransition(Activity currentActivity, Class<? extends Activity> newActivitiy) { + startActivityWithoutTransition(currentActivity, new Intent(currentActivity, newActivitiy)); + } + + public static void startActivityWithoutTransition(Activity currentActivity, Intent intent) { + currentActivity.startActivity(intent); + disablePendingTransition(currentActivity); + } + + public static void disablePendingTransition(Activity activity) { + + // Activity.overridePendingTransition() was introduced in Android 2.0. Use reflection to maintain + // compatibility with 1.5. + try { + Method method = Activity.class.getMethod("overridePendingTransition", int.class, int.class); + method.invoke(activity, 0, 0); + } catch (Throwable x) { + // Ignored + } + } + + public static Drawable createDrawableFromBitmap(Context context, Bitmap bitmap) { + // BitmapDrawable(Resources, Bitmap) was introduced in Android 1.6. Use reflection to maintain + // compatibility with 1.5. + try { + Constructor<BitmapDrawable> constructor = BitmapDrawable.class.getConstructor(Resources.class, Bitmap.class); + return constructor.newInstance(context.getResources(), bitmap); + } catch (Throwable x) { + return new BitmapDrawable(bitmap); + } + } + + public static void registerMediaButtonEventReceiver(Context context) { + + // Only do it if enabled in the settings. + SharedPreferences prefs = getPreferences(context); + boolean enabled = prefs.getBoolean(Constants.PREFERENCES_KEY_MEDIA_BUTTONS, true); + + if (enabled) { + + // AudioManager.registerMediaButtonEventReceiver() was introduced in Android 2.2. + // Use reflection to maintain compatibility with 1.5. + try { + AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); + ComponentName componentName = new ComponentName(context.getPackageName(), MediaButtonIntentReceiver.class.getName()); + Method method = AudioManager.class.getMethod("registerMediaButtonEventReceiver", ComponentName.class); + method.invoke(audioManager, componentName); + } catch (Throwable x) { + // Ignored. + } + } + } + + public static void unregisterMediaButtonEventReceiver(Context context) { + // AudioManager.unregisterMediaButtonEventReceiver() was introduced in Android 2.2. + // Use reflection to maintain compatibility with 1.5. + try { + AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); + ComponentName componentName = new ComponentName(context.getPackageName(), MediaButtonIntentReceiver.class.getName()); + Method method = AudioManager.class.getMethod("unregisterMediaButtonEventReceiver", ComponentName.class); + method.invoke(audioManager, componentName); + } catch (Throwable x) { + // Ignored. + } + } + + private static void startForeground(Service service, int notificationId, Notification notification) { + // Service.startForeground() was introduced in Android 2.0. + // Use reflection to maintain compatibility with 1.5. + try { + Method method = Service.class.getMethod("startForeground", int.class, Notification.class); + method.invoke(service, notificationId, notification); + Log.i(TAG, "Successfully invoked Service.startForeground()"); + } catch (Throwable x) { + NotificationManager notificationManager = (NotificationManager) service.getSystemService(Context.NOTIFICATION_SERVICE); + notificationManager.notify(Constants.NOTIFICATION_ID_PLAYING, notification); + Log.i(TAG, "Service.startForeground() not available. Using work-around."); + } + } + + private static void stopForeground(Service service, boolean removeNotification) { + // Service.stopForeground() was introduced in Android 2.0. + // Use reflection to maintain compatibility with 1.5. + try { + Method method = Service.class.getMethod("stopForeground", boolean.class); + method.invoke(service, removeNotification); + Log.i(TAG, "Successfully invoked Service.stopForeground()"); + } catch (Throwable x) { + NotificationManager notificationManager = (NotificationManager) service.getSystemService(Context.NOTIFICATION_SERVICE); + notificationManager.cancel(Constants.NOTIFICATION_ID_PLAYING); + Log.i(TAG, "Service.stopForeground() not available. Using work-around."); + } + } + + /** + * <p>Broadcasts the given song info as the new song being played.</p> + */ + public static void broadcastNewTrackInfo(Context context, MusicDirectory.Entry song) { + Intent intent = new Intent(EVENT_META_CHANGED); + + if (song != null) { + intent.putExtra("title", song.getTitle()); + intent.putExtra("artist", song.getArtist()); + intent.putExtra("album", song.getAlbum()); + + File albumArtFile = FileUtil.getAlbumArtFile(context, song); + intent.putExtra("coverart", albumArtFile.getAbsolutePath()); + } else { + intent.putExtra("title", ""); + intent.putExtra("artist", ""); + intent.putExtra("album", ""); + intent.putExtra("coverart", ""); + } + + context.sendBroadcast(intent); + } + + /** + * <p>Broadcasts the given player state as the one being set.</p> + */ + public static void broadcastPlaybackStatusChange(Context context, PlayerState state) { + Intent intent = new Intent(EVENT_PLAYSTATE_CHANGED); + + switch (state) { + case STARTED: + intent.putExtra("state", "play"); + break; + case STOPPED: + intent.putExtra("state", "stop"); + break; + case PAUSED: + intent.putExtra("state", "pause"); + break; + case COMPLETED: + intent.putExtra("state", "complete"); + break; + default: + return; // No need to broadcast. + } + + context.sendBroadcast(intent); + } + + /** + * Resolves the default text color for notifications. + * + * Based on http://stackoverflow.com/questions/4867338/custom-notification-layouts-and-text-colors/7320604#7320604 + */ + private static Pair<Integer, Integer> getNotificationTextColors(Context context) { + if (NOTIFICATION_TEXT_COLORS.getFirst() == null && NOTIFICATION_TEXT_COLORS.getSecond() == null) { + try { + Notification notification = new Notification(); + String title = "title"; + String content = "content"; + notification.setLatestEventInfo(context, title, content, null); + LinearLayout group = new LinearLayout(context); + ViewGroup event = (ViewGroup) notification.contentView.apply(context, group); + findNotificationTextColors(event, title, content); + group.removeAllViews(); + } catch (Exception x) { + Log.w(TAG, "Failed to resolve notification text colors.", x); + } + } + return NOTIFICATION_TEXT_COLORS; + } + + private static void findNotificationTextColors(ViewGroup group, String title, String content) { + for (int i = 0; i < group.getChildCount(); i++) { + if (group.getChildAt(i) instanceof TextView) { + TextView textView = (TextView) group.getChildAt(i); + String text = textView.getText().toString(); + if (title.equals(text)) { + NOTIFICATION_TEXT_COLORS.setFirst(textView.getTextColors().getDefaultColor()); + } + else if (content.equals(text)) { + NOTIFICATION_TEXT_COLORS.setSecond(textView.getTextColors().getDefaultColor()); + } + } + else if (group.getChildAt(i) instanceof ViewGroup) + findNotificationTextColors((ViewGroup) group.getChildAt(i), title, content); + } + } +} |