java/com/android/dialer/util/SettingsUtil.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License
 */

package com.android.dialer.util;

import android.content.Context;
import android.content.SharedPreferences;
import android.database.sqlite.SQLiteException;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.text.TextUtils;

public class SettingsUtil {

  private static final String DEFAULT_NOTIFICATION_URI_STRING =
      Settings.System.DEFAULT_NOTIFICATION_URI.toString();

  /**
   * Queries for a ringtone name, and sets the name using a handler. This is a method was originally
   * copied from com.android.settings.SoundSettings.
   *
   * @param context The application context.
   * @param handler The handler, which takes the name of the ringtone as a String as a parameter.
   * @param type The type of sound.
   * @param key The key to the shared preferences entry being updated.
   * @param msg An integer identifying the message sent to the handler.
   */
  public static void updateRingtoneName(
      Context context, Handler handler, int type, String key, int msg) {
    final Uri ringtoneUri;
    boolean defaultRingtone = false;
    if (type == RingtoneManager.TYPE_RINGTONE) {
      // For ringtones, we can just lookup the system default because changing the settings
      // in Call Settings changes the system default.
      ringtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, type);
    } else {
      final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
      // For voicemail notifications, we use the value saved in Phone's shared preferences.
      String uriString = prefs.getString(key, DEFAULT_NOTIFICATION_URI_STRING);
      if (TextUtils.isEmpty(uriString)) {
        // silent ringtone
        ringtoneUri = null;
      } else {
        if (uriString.equals(DEFAULT_NOTIFICATION_URI_STRING)) {
          // If it turns out that the voicemail notification is set to the system
          // default notification, we retrieve the actual URI to prevent it from showing
          // up as "Unknown Ringtone".
          defaultRingtone = true;
          ringtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, type);
        } else {
          ringtoneUri = Uri.parse(uriString);
        }
      }
    }
    getRingtoneName(context, handler, ringtoneUri, msg, defaultRingtone);
  }

  public static void getRingtoneName(Context context, Handler handler, Uri ringtoneUri, int msg) {
    getRingtoneName(context, handler, ringtoneUri, msg, false);
  }

  public static void getRingtoneName(
      Context context, Handler handler, Uri ringtoneUri, int msg, boolean defaultRingtone) {
    CharSequence summary = context.getString(R.string.ringtone_unknown);
    // Is it a silent ringtone?
    if (ringtoneUri == null) {
      summary = context.getString(R.string.ringtone_silent);
    } else {
      // Fetch the ringtone title from the media provider
      final Ringtone ringtone = RingtoneManager.getRingtone(context, ringtoneUri);
      if (ringtone != null) {
        try {
          final String title = ringtone.getTitle(context);
          if (!TextUtils.isEmpty(title)) {
            summary = title;
          }
        } catch (SQLiteException sqle) {
          // Unknown title for the ringtone
        }
      }
    }
    if (defaultRingtone) {
      summary = context.getString(R.string.default_notification_description, summary);
    }
    handler.sendMessage(handler.obtainMessage(msg, summary));
  }
}