AndroidNotificationManagerImpl.java 文件源码

@UiThread
private int getDefaults() {
    int defaults = DEFAULT_LIGHTS;
    boolean sound = settings.getBoolean(PREF_NOTIFY_SOUND, true);
    String ringtoneUri = settings.get(PREF_NOTIFY_RINGTONE_URI);
    if (sound && StringUtils.isNullOrEmpty(ringtoneUri))
        defaults |= DEFAULT_SOUND;
    if (settings.getBoolean(PREF_NOTIFY_VIBRATION, true))
        defaults |= DEFAULT_VIBRATE;
    return defaults;
}