android学习笔记（十一)

     用google搜索一下，你就能马上发现关于如何在访问短信数据库的代码。

    不过很不幸的是，基本讲的都不是很全。因为只有简单的几行代码。而且几乎都一样。其实，这一块代码是肯定需要进行摸索的。能够达到自己的需求就好。仔细研究过相关的api。至少在2.0之前，android关于短信的api给我的感觉很混乱。

源代码里面，是把所有短信访问的代码全都封装起了，加入了。但是在正式的发布的sdk里面则是没有，取而代之的是android.telephony包下面的代码。不过这个下面的代码其实不能够处理已经收到的短消息。这在应用中，将会是一个很大的软肋。

       其实要读取在装应用之前的短信。代码网上可以找到。唯一让人觉得麻烦的其实只是不明白每个字段的意思。和取值。我查了下源代码。把相关字段的取值都取到了。不过有些意思还不是很明白

 

      

/**
         * The type of the message
         * <P>Type: INTEGER</P>
         */
        public static final String TYPE = "type";

        public static final int MESSAGE_TYPE_ALL    = 0;
        public static final int MESSAGE_TYPE_INBOX  = 1;
        public static final int MESSAGE_TYPE_SENT   = 2;
        public static final int MESSAGE_TYPE_DRAFT  = 3;
        public static final int MESSAGE_TYPE_OUTBOX = 4;
        public static final int MESSAGE_TYPE_FAILED = 5; // for failed outgoing messages
        public static final int MESSAGE_TYPE_QUEUED = 6; // for messages to send later


        /**
         * The thread ID of the message
         * <P>Type: INTEGER</P>
         */
        public static final String THREAD_ID = "thread_id";

        /**
         * The address of the other party
         * <P>Type: TEXT</P>
         */
        public static final String ADDRESS = "address";

        /**
         * The person ID of the sender
         * <P>Type: INTEGER (long)</P>
         */
        public static final String PERSON_ID = "person";

        /**
         * The date the message was sent
         * <P>Type: INTEGER (long)</P>
         */
        public static final String DATE = "date";

        /**
         * Has the message been read
         * <P>Type: INTEGER (boolean)</P>
         */
        public static final String READ = "read";

        /**
         * The TP-Status value for the message, or -1 if no status has
         * been received
         */
        public static final String STATUS = "status";

        public static final int STATUS_NONE = -1;
        public static final int STATUS_COMPLETE = 0;
        public static final int STATUS_PENDING = 64;
        public static final int STATUS_FAILED = 128;

        /**
         * The subject of the message, if present
         * <P>Type: TEXT</P>
         */
        public static final String SUBJECT = "subject";

        /**
         * The body of the message
         * <P>Type: TEXT</P>
         */
        public static final String BODY = "body";

        /**
         * The id of the sender of the conversation, if present
         * <P>Type: INTEGER (reference to item in content://contacts/people)</P>
         */
        public static final String PERSON = "person";

        /**
         * The protocol identifier code
         * <P>Type: INTEGER</P>
         */
        public static final String PROTOCOL = "protocol";

        /**
         * Whether the <code>TP-Reply-Path</code> bit was set on this message
         * <P>Type: BOOLEAN</P>
         */
        public static final String REPLY_PATH_PRESENT = "reply_path_present";

        /**
         * The service center (SC) through which to send the message, if present
         * <P>Type: TEXT</P>
         */
        public static final String SERVICE_CENTER = "service_center";