Android中默认系统的声音/大小修改和配置详解

/** @hide Maximum volume index values for audio streams */
 private static int[] MAX_STREAM_VOLUME = new int[] {
  5, // STREAM_VOICE_CALL
  7, // STREAM_SYSTEMX_STREAM_VOLUMEMAX_STREAM_VOLUMEMAX_STREAM_VOLUME
  7, // STREAM_RING
  15, // STREAM_MUSIC
  7, // STREAM_ALARM
  7, // STREAM_NOTIFICATION
  15, // STREAM_BLUETOOTH_SCO
  7, // STREAM_SYSTEM_ENFORCED
  15, // STREAM_DTMF
  15 // STREAM_TTS
 };
 private static int[] DEFAULT_STREAM_VOLUME = new int[] {
  4, // STREAM_VOICE_CALL
  7, // STREAM_SYSTEM
  5, // STREAM_RING
  11, // STREAM_MUSIC
  6, // STREAM_ALARM
  5, // STREAM_NOTIFICATION
  7, // STREAM_BLUETOOTH_SCO
  7, // STREAM_SYSTEM_ENFORCED
  11, // STREAM_DTMF
  11 // STREAM_TTS
 };

stmt = db.compileStatement("INSERT OR IGNORE INTO system(name,value)" + " VALUES(&＃63;,&＃63;);");
loadSetting(stmt, Settings.System.VOLUME_MUSIC,  AudioService.getDefaultStreamVolume(AudioManager.STREAM_MUSIC));
loadSetting(stmt, Settings.System.VOLUME_RING,   AudioService.getDefaultStreamVolume(AudioManager.STREAM_RING));
loadSetting(stmt, Settings.System.VOLUME_SYSTEM,  AudioService.getDefaultStreamVolume(AudioManager.STREAM_SYSTEM));
loadSetting(stmt,Settings.System.VOLUME_VOICE,
AudioService.getDefaultStreamVolume(AudioManager.STREAM_VOICE_CALL));
loadSetting(stmt, Settings.System.VOLUME_ALARM,   AudioService.getDefaultStreamVolume(AudioManager.STREAM_ALARM));
loadSetting(stmt,Settings.System.VOLUME_NOTIFICATION,
AudioService.getDefaultStreamVolume(AudioManager.STREAM_NOTIFICATION));
loadSetting(stmt,Settings.System.VOLUME_BLUETOOTH_SCO,
AudioService.getDefaultStreamVolume(AudioManager.STREAM_BLUETOOTH_SCO));

public static int getDefaultStreamVolume(int streamType) {
 return DEFAULT_STREAM_VOLUME[streamType];
}