Android跨进程SharedPreferences异常详解

Context c = null;
    try {
      c = context.createPackageContext(PREFERENCE_PACKAGE,
          Context.CONTEXT_IGNORE_SECURITY);
    } catch (NameNotFoundException e) {
      e.printStackTrace();
    }
    if (c != null) {
      SharedPreferences infoSp = c.getSharedPreferences(PREFERENCE_NAME,
          Context.MODE_MULTI_PROCESS);
      int status = infoSp.getInt("break", 1);
      Logcat.d("br" + status);
      return 0 == status;
    } else {
      Logcat.w("brake_status error.... c==null ");
    }
    return false;