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+/*
+ 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 github.daneren2005.subphonic.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 github.daneren2005.subphonic.R;
+import github.daneren2005.subphonic.activity.DownloadActivity;
+import github.daneren2005.subphonic.domain.MusicDirectory;
+import github.daneren2005.subphonic.domain.PlayerState;
+import github.daneren2005.subphonic.domain.RepeatMode;
+import github.daneren2005.subphonic.domain.Version;
+import github.daneren2005.subphonic.provider.SubsonicAppWidgetProvider1;
+import github.daneren2005.subphonic.receiver.MediaButtonIntentReceiver;
+import github.daneren2005.subphonic.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 = "github.daneren2005.subphonic.EVENT_META_CHANGED";
+ public static final String EVENT_PLAYSTATE_CHANGED = "github.daneren2005.subphonic.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
+ SubsonicAppWidgetProvider1.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
+ SubsonicAppWidgetProvider1.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);
+ }
+ }
+}