/* 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 . Copyright 2009 (C) Sindre Mehus */ package com.thejoshwa.ultrasonic.androidapp.util; import android.app.Activity; import android.app.AlertDialog; import android.app.PendingIntent; 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.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.media.AudioManager; import android.media.AudioManager.OnAudioFocusChangeListener; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.wifi.WifiManager; import android.os.Environment; import android.os.Parcelable; import android.preference.PreferenceManager; import android.util.DisplayMetrics; import android.util.Log; import android.view.Gravity; import android.view.KeyEvent; import android.widget.RemoteViews; import android.widget.Toast; import com.thejoshwa.ultrasonic.androidapp.R; import com.thejoshwa.ultrasonic.androidapp.activity.DownloadActivity; import com.thejoshwa.ultrasonic.androidapp.activity.MainActivity; import com.thejoshwa.ultrasonic.androidapp.domain.MusicDirectory; import com.thejoshwa.ultrasonic.androidapp.domain.PlayerState; import com.thejoshwa.ultrasonic.androidapp.domain.RepeatMode; import com.thejoshwa.ultrasonic.androidapp.domain.SearchResult; import com.thejoshwa.ultrasonic.androidapp.domain.Version; import com.thejoshwa.ultrasonic.androidapp.domain.MusicDirectory.Entry; import com.thejoshwa.ultrasonic.androidapp.receiver.MediaButtonIntentReceiver; import com.thejoshwa.ultrasonic.androidapp.service.DownloadFile; import com.thejoshwa.ultrasonic.androidapp.service.DownloadService; import com.thejoshwa.ultrasonic.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 class Util extends DownloadActivity { 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 = "com.thejoshwa.ultrasonic.androidapp.EVENT_META_CHANGED"; public static final String EVENT_PLAYSTATE_CHANGED = "com.thejoshwa.ultrasonic.androidapp.EVENT_PLAYSTATE_CHANGED"; public static final String CM_AVRCP_PLAYSTATE_CHANGED = "com.android.music.playstatechanged"; public static final String CM_AVRCP_METADATA_CHANGED = "com.android.music.metachanged"; public final static int bluetoothImagesize = 500; private static boolean hasFocus = false; private static boolean pauseFocus = false; private static boolean lowerFocus = false; private static final Map SERVER_REST_VERSIONS = new ConcurrentHashMap(); // 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 static Toast toast; public static Bitmap bluetoothBitmap; private static Entry currentSong; private Util() { } public static boolean isOffline(Context context) { if (context == null) return false; else 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 boolean isServerScalingEnabled(Context context) { if (isOffline(context)) { return false; } SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_SERVER_SCALING, false); } public static boolean isNotificationEnabled(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_SHOW_NOTIFICATION, false); } public static boolean isNotificationAlwaysEnabled(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_ALWAYS_SHOW_NOTIFICATION, false); } public static boolean isLockScreenEnabled(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_SHOW_LOCK_SCREEN_CONTROLS, false); } public static boolean isStreamProxyEnabled(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_USE_STREAM_PROXY, 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 int getActiveServers(Context context) { SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context); return settings.getInt(Constants.PREFERENCES_KEY_ACTIVE_SERVERS, 3); } 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 boolean getServerEnabled(Context context, int instance) { if (instance == 0) { return true; } SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_SERVER_ENABLED + instance, true); } 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 removeInstanceName(Context context, int instance, int activeInstance) { SharedPreferences prefs = getPreferences(context); SharedPreferences.Editor editor = prefs.edit(); int newInstance = instance + 1; String server = prefs.getString(Constants.PREFERENCES_KEY_SERVER + newInstance, null); String serverName = prefs.getString(Constants.PREFERENCES_KEY_SERVER_NAME + newInstance, null); String serverUrl = prefs.getString(Constants.PREFERENCES_KEY_SERVER_URL + newInstance, null); String userName = prefs.getString(Constants.PREFERENCES_KEY_USERNAME + newInstance, null); String password = prefs.getString(Constants.PREFERENCES_KEY_PASSWORD + newInstance, null); boolean serverEnabled = prefs.getBoolean(Constants.PREFERENCES_KEY_SERVER_ENABLED + newInstance, true); editor.putString(Constants.PREFERENCES_KEY_SERVER + instance, server); editor.putString(Constants.PREFERENCES_KEY_SERVER_NAME + instance, serverName); editor.putString(Constants.PREFERENCES_KEY_SERVER_URL + instance, serverUrl); editor.putString(Constants.PREFERENCES_KEY_USERNAME + instance, userName); editor.putString(Constants.PREFERENCES_KEY_PASSWORD + instance, password); editor.putBoolean(Constants.PREFERENCES_KEY_SERVER_ENABLED + instance, serverEnabled); editor.putString(Constants.PREFERENCES_KEY_SERVER + newInstance, null); editor.putString(Constants.PREFERENCES_KEY_SERVER_NAME + newInstance, null); editor.putString(Constants.PREFERENCES_KEY_SERVER_URL + newInstance, null); editor.putString(Constants.PREFERENCES_KEY_USERNAME + newInstance, null); editor.putString(Constants.PREFERENCES_KEY_PASSWORD + newInstance, null); editor.putBoolean(Constants.PREFERENCES_KEY_SERVER_ENABLED + newInstance, true); editor.commit(); if (instance == activeInstance) { Util.setActiveServer(context, 0); } if (newInstance == activeInstance) { Util.setActiveServer(context, instance); } } 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, "dark"); } 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 InputStream as a byte[]. *

* This method buffers the input internally, so there is no need to use a * BufferedInputStream. * * @param input the InputStream 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 renameFile(File from, File to) throws IOException { if(from.renameTo(to)) { Log.i(TAG, "Renamed " + from + " to " + to); } else { atomicCopy(from, to); } } 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 boolean recursiveDelete(File dir) { if (dir != null && dir.exists()) { for(File file: dir.listFiles()) { if(file.isDirectory()) { if(!recursiveDelete(file)) { return false; } } else if(file.exists()) { if(!file.delete()) { return false; } } } return dir.delete(); } return false; } 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: *

    *
  • format(918) returns "918 B".
    • *
  • format(98765) returns "96 KB".
    • *
  • format(1238476) returns "1.2 MB".
    • *
* 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: *
    *
  • format(918) returns "918 B".
    • *
  • format(98765) returns "96 KB".
    • *
  • format(1238476) returns "1.2 MB".
    • *
* 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 String getGrandparent(final String path) { // Find the top level folder, assume it is the album artist if (path != null) { int slashIndex = path.indexOf("/"); if (slashIndex != 0) { return path.substring(0, slashIndex); } } return null; } 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 boolean shouldDisplayBitrateWithArtist(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_DISPLAY_BITRATE_WITH_ARTIST, true); } public static boolean shouldUseFolderForArtistName(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_USE_FOLDER_FOR_ALBUM_ARTIST, false); } public static boolean shouldShowTrackNumber(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_SHOW_TRACK_NUMBER, 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 sleepQuietly(long millis) { try { Thread.sleep(millis); } catch (InterruptedException x) { Log.w(TAG, "Interrupted from sleep.", x); } } public static void startActivityWithoutTransition(Activity currentActivity, Class 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 getDrawableFromAttribute(Context context, int attr) { int[] attrs = new int[] { attr }; android.content.res.TypedArray ta = context.obtainStyledAttributes(attrs); Drawable drawableFromTheme = ta.getDrawable(0); ta.recycle(); return drawableFromTheme; } 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 constructor = BitmapDrawable.class.getConstructor(Resources.class, Bitmap.class); return constructor.newInstance(context.getResources(), bitmap); } catch (Throwable x) { return new BitmapDrawable(bitmap); } } public static WifiManager.WifiLock createWifiLock(Context context, String tag) { WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); return wm.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, tag); } public static int getScaledHeight(double height, double width, int newWidth) { // Try to keep correct aspect ratio of the original image, do not force a square double aspectRatio = height / width; // Assume the size given refers to the width of the image, so calculate the new height using // the previously determined aspect ratio return (int) Math.round(newWidth * aspectRatio); } public static int getScaledHeight(Bitmap bitmap, int width) { return getScaledHeight((double)bitmap.getHeight(), (double)bitmap.getWidth(), width); } public static Bitmap scaleBitmap(Bitmap bitmap, int size) { return Bitmap.createScaledBitmap(bitmap, size, getScaledHeight(bitmap, size), true); } public static void registerMediaButtonEventReceiver(Context context) { if (getMediaButtonsPreference(context)) { AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); audioManager.registerMediaButtonEventReceiver(new ComponentName(context.getPackageName(), MediaButtonIntentReceiver.class.getName())); } } public static void unregisterMediaButtonEventReceiver(Context context) { AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); audioManager.unregisterMediaButtonEventReceiver(new ComponentName(context.getPackageName(), MediaButtonIntentReceiver.class.getName())); } public static MusicDirectory getSongsFromSearchResult(SearchResult searchResult) { MusicDirectory musicDirectory = new MusicDirectory(); for (Entry entry : searchResult.getSongs()) { musicDirectory.addChild(entry); } return musicDirectory; } /** *

Broadcasts the given song info as the new song being played.

*/ 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); } public static void broadcastA2dpMetaDataChange(Context context, DownloadService downloadService) { Entry song = null; Intent avrcpIntent = new Intent(CM_AVRCP_METADATA_CHANGED); if (downloadService != null) { DownloadFile entry = downloadService.getCurrentPlaying(); if (entry != null) { song = entry.getSong(); } } if (downloadService == null || song == null) { avrcpIntent.putExtra("track", ""); avrcpIntent.putExtra("track_name", ""); avrcpIntent.putExtra("artist", ""); avrcpIntent.putExtra("artist_name", ""); avrcpIntent.putExtra("album", ""); avrcpIntent.putExtra("album_name", ""); avrcpIntent.putExtra("cover", (Parcelable) null); avrcpIntent.putExtra("coverart", (Parcelable) null); avrcpIntent.putExtra("ListSize", (long) 0); avrcpIntent.putExtra("id", (long) 0); avrcpIntent.putExtra("duration", (long) 0); avrcpIntent.putExtra("position", (long) 0); bluetoothBitmap = null; } else { if (song != currentSong) { currentSong = song; bluetoothBitmap = FileUtil.getAlbumArtBitmap(context, song, bluetoothImagesize, true); } String title = song.getTitle(); String artist = song.getArtist(); String album = song.getAlbum(); Integer duration = song.getDuration(); Integer listSize = downloadService.getDownloads().size(); Integer id = downloadService.getCurrentPlayingIndex() + 1; Integer playerPosition = downloadService.getPlayerPosition(); avrcpIntent.putExtra("track", title); avrcpIntent.putExtra("track_name", title); avrcpIntent.putExtra("artist", artist); avrcpIntent.putExtra("artist_name", artist); avrcpIntent.putExtra("album", album); avrcpIntent.putExtra("album_name", album); avrcpIntent.putExtra("cover", (Parcelable) bluetoothBitmap); avrcpIntent.putExtra("coverart", (Parcelable) bluetoothBitmap); if (playerPosition != null) { avrcpIntent.putExtra("position", (long) playerPosition); } if (id != null) { avrcpIntent.putExtra("id", (long) id); } if (listSize != null) { avrcpIntent.putExtra("ListSize", (long) listSize); } if (duration != null) { avrcpIntent.putExtra("duration", (long) duration); } } context.sendBroadcast(avrcpIntent); } public static void broadcastA2dpPlayStatusChange(Context context, PlayerState state, DownloadService downloadService) { if (downloadService.getCurrentPlaying() != null) { Intent avrcpIntent = new Intent(CM_AVRCP_PLAYSTATE_CHANGED); Entry song = downloadService.getCurrentPlaying().getSong(); if (song == null) { return; } if (song != currentSong) { currentSong = song; bluetoothBitmap = FileUtil.getAlbumArtBitmap(context, song, bluetoothImagesize, true); } String title = song.getTitle(); String artist = song.getArtist(); String album = song.getAlbum(); Integer duration = song.getDuration(); Integer listSize = downloadService.getDownloads().size(); Integer id = downloadService.getCurrentPlayingIndex() + 1; Integer playerPosition = downloadService.getPlayerPosition(); avrcpIntent.putExtra("track", title); avrcpIntent.putExtra("track_name", title); avrcpIntent.putExtra("artist", artist); avrcpIntent.putExtra("artist_name", artist); avrcpIntent.putExtra("album", album); avrcpIntent.putExtra("album_name", album); avrcpIntent.putExtra("cover", (Parcelable) bluetoothBitmap); avrcpIntent.putExtra("coverart", (Parcelable) bluetoothBitmap); if (playerPosition != null) { avrcpIntent.putExtra("position", (long) playerPosition); } if (id != null) { avrcpIntent.putExtra("id", (long) id); } if (listSize != null) { avrcpIntent.putExtra("ListSize", (long) listSize); } if (duration != null) { avrcpIntent.putExtra("duration", (long) duration); } switch (state) { case STARTED: avrcpIntent.putExtra("playing", true); break; case STOPPED: avrcpIntent.putExtra("playing", false); break; case PAUSED: avrcpIntent.putExtra("playing", false); break; case COMPLETED: avrcpIntent.putExtra("playing", false); break; default: return; // No need to broadcast. } context.sendBroadcast(avrcpIntent); } } /** *

Broadcasts the given player state as the one being set.

*/ 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); } public static int getNotificationImageSize(Context context) { DisplayMetrics metrics = context.getResources().getDisplayMetrics(); int imageSizeLarge = (int) Math.round(Math.min(metrics.widthPixels, metrics.heightPixels)); int size = 64; if (imageSizeLarge <= 480) { size = 64; } else if (imageSizeLarge <= 768) { size = 128; } else { size = 256; } return size; } public static int getAlbumImageSize(Context context) { DisplayMetrics metrics = context.getResources().getDisplayMetrics(); int imageSizeLarge = (int) Math.round(Math.min(metrics.widthPixels, metrics.heightPixels)); int size = 128; if (imageSizeLarge <= 480) { size = 128; } else if (imageSizeLarge <= 768) { size = 256; } else { size = 512; } return size; } public static void requestAudioFocus(final Context context) { if (!hasFocus) { final AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); hasFocus = true; audioManager.requestAudioFocus(new OnAudioFocusChangeListener() { public void onAudioFocusChange(int focusChange) { DownloadServiceImpl downloadService = (DownloadServiceImpl)context; if((focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT || focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK) && !downloadService.isJukeboxEnabled()) { if(downloadService.getPlayerState() == PlayerState.STARTED) { SharedPreferences prefs = getPreferences(context); int lossPref = Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_TEMP_LOSS, "1")); if(lossPref == 2 || (lossPref == 1 && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)) { lowerFocus = true; downloadService.setVolume(0.1f); } else if(lossPref == 0 || (lossPref == 1 && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT)) { pauseFocus = true; downloadService.pause(); } } } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) { if(pauseFocus) { pauseFocus = false; downloadService.start(); } else if(lowerFocus) { lowerFocus = false; downloadService.setVolume(1.0f); } } else if(focusChange == AudioManager.AUDIOFOCUS_LOSS && !downloadService.isJukeboxEnabled()) { hasFocus = false; downloadService.pause(); audioManager.abandonAudioFocus(this); } } }, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN); } } public static int getMinDisplayMetric(Context context) { DisplayMetrics metrics = context.getResources().getDisplayMetrics(); return Math.min(metrics.widthPixels, metrics.heightPixels); } public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { // Raw height and width of image final int height = options.outHeight; final int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { // Calculate ratios of height and width to requested height and // width final int heightRatio = Math.round((float) height / (float) reqHeight); final int widthRatio = Math.round((float) width / (float) reqWidth); // Choose the smallest ratio as inSampleSize value, this will // guarantee // a final image with both dimensions larger than or equal to the // requested height and width. inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio; } return inSampleSize; } public static Bitmap decodeSampledBitmapFromFile(String path, int reqWidth, int reqHeight) { // First decode with inJustDecodeBounds=true to check dimensions final BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeFile(path, options); // Calculate inSampleSize options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); // Decode bitmap with inSampleSize set options.inJustDecodeBounds = false; return BitmapFactory.decodeFile(path, options); } public static void linkButtons(Context context, RemoteViews views, boolean playerActive) { Intent intent = new Intent(context, playerActive ? DownloadActivity.class : MainActivity.class); PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0); views.setOnClickPendingIntent(R.id.appwidget_coverart, pendingIntent); views.setOnClickPendingIntent(R.id.appwidget_top, pendingIntent); // Emulate media button clicks. intent = new Intent("1"); intent.setComponent(new ComponentName(context, DownloadServiceImpl.class)); intent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE)); pendingIntent = PendingIntent.getService(context, 0, intent, 0); views.setOnClickPendingIntent(R.id.control_play, pendingIntent); intent = new Intent("2"); intent.setComponent(new ComponentName(context, DownloadServiceImpl.class)); intent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_NEXT)); pendingIntent = PendingIntent.getService(context, 0, intent, 0); views.setOnClickPendingIntent(R.id.control_next, pendingIntent); intent = new Intent("3"); intent.setComponent(new ComponentName(context, DownloadServiceImpl.class)); intent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PREVIOUS)); pendingIntent = PendingIntent.getService(context, 0, intent, 0); views.setOnClickPendingIntent(R.id.control_previous, pendingIntent); intent = new Intent("4"); intent.setComponent(new ComponentName(context, DownloadServiceImpl.class)); intent.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_STOP)); pendingIntent = PendingIntent.getService(context, 0, intent, 0); views.setOnClickPendingIntent(R.id.control_stop, pendingIntent); } public static int getMaxVideoBitrate(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_VIDEO_BITRATE_WIFI : Constants.PREFERENCES_KEY_MAX_VIDEO_BITRATE_MOBILE, "0")); } public static int getNetworkTimeout(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_NETWORK_TIMEOUT, "15000")); } public static int getDefaultAlbums(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_DEFAULT_ALBUMS, "5")); } public static int getMaxAlbums(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_MAX_ALBUMS, "20")); } public static int getDefaultSongs(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_DEFAULT_SONGS, "10")); } public static int getMaxSongs(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_MAX_SONGS, "25")); } public static int getMaxArtists(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_MAX_ARTISTS, "10")); } public static int getDefaultArtists(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_DEFAULT_ARTISTS, "3")); } public static int getBufferLength(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_BUFFER_LENGTH, "5")); } public static int getIncrementTime(Context context) { SharedPreferences prefs = getPreferences(context); return Integer.parseInt(prefs.getString(Constants.PREFERENCES_KEY_INCREMENT_TIME, "5")); } public static boolean getMediaButtonsPreference(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_MEDIA_BUTTONS, true); } public static boolean getShowNowPlayingPreference(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_SHOW_NOW_PLAYING, true); } public static boolean getGaplessPlaybackPreference(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_GAPLESS_PLAYBACK, true); } public static boolean getShouldTransitionOnPlaybackPreference(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_DOWNLOAD_TRANSITION, true); } public static boolean getShouldUseId3Tags(Context context) { SharedPreferences prefs = getPreferences(context); return prefs.getBoolean(Constants.PREFERENCES_KEY_ID3_TAGS, false); } }