我得到的值：1,6和2.
但不知道哪一个是外向的,传入的等等…
MESSAGE_TYPE_ALL = 0; MESSAGE_TYPE_INBox = 1; MESSAGE_TYPE_SENT = 2; MESSAGE_TYPE_DRAFT = 3; MESSAGE_TYPE_OUTBox = 4; MESSAGE_TYPE_Failed = 5; // for Failed outgoing messages MESSAGE_TYPE_QUEUED = 6; // for messages to send later
