Monitor MMS

1. Monitor incoming mms event
2. Parse MMS
   The mms/sms are stored in SQLite file
   /data/data/com.android.providers.telephony/databases/mmssms.db
   /data/data/com.android.providers.telephony/app_parts/*
   mmssms.db srotes the sms and mms information, and the files under app_parts stores the files attached in MMS.
   Other application has no permission to access that database file, we only can read mms/sms throung content provider.
   
   Sample code:
   CursorcurPdu =getContentResolver().query(Uri.parse("content://mms"), null,null,null,null);
   int id = curPdu.getInt(curPdu.getColumnIndex("_id"));
   int thread_id = curPdu.getInt(curPdu.getColumnIndex("thread_id"));
   String subject = curPdu.getString(curPdu.getColumnIndex("sub");
   int date = curPdu.getInt(curPdu.getColumnIndex("date"));
   
   //Delete mms
   getContentResolver().delete(Uri.parse("content://mms/" + Integer.toString(id)));
   
   String selectionAddr = new String("msg_id='" + Integer.toString(id) + "'");
   Uri uriAddr = Uri.parse("content://mms/" + curPdu.getString(curPdu.getColumnIndex("_id")) + "/addr"); //use provider 'content://mms/#/addr' to get address
   Cursor curAddr = getContentResolver().query(Uri.parse(uriAddr, null, selectionAddr, null, null);
   String contact_id = curAddr.getString(curAddr.getColumnIndex("contact_id"));
   String address = curAddr.getString(curAddr.getColumnIndex("address"));
   
   String selectionPart = new String("mid='" + Integer.toString(id) + "'");
   Cursor curPart = getContentResolver().query(Uri.parse("content://mms/part"), null, selectionPart, null, null);
   /*
   //You can also use following code
   Cursor curPart = getContentResolver().query(Uri.parse("content://mms/" + Integer.toString(id) + "/part"), null,null , null, null);
   */
   while(curPart.moveToNext())
   {
   String type = curPart.getString(curPart.getColumnIndex("ct")); //content type
   String attachmentpath = curPart.getString(curPart.getColumnIndex("_data"));
   String cid = curPart.getString(curPart.getColumnIndex("cid"));
   
   if (cid.euqals("<text_0>") //Current row stores MMS body
   {
   String body = curPart.getString(curPart.getColumnIndex("text"));
   }
   else if (!attachmentpath.euqals(null)) //Current row stores MMS attachment, following code is used to read the attachment file
   {
   int _partID = curPart.getInt(curPart.getColumnIndex("_id"));
   String partID = String.valueOf(_partID);
   Uri partURI = Uri.parse("content://mms/part/" + partID);
   
   ByteArrayOutputStream baos = new ByteArrayOutputStream(); //This is attachment
   InputStream is = null;
   
   try
   {
   is = getContentResolver().openInputStream(partURI);
   byte[] buffer = new byte[256];
   int len = is.read(buffer);
   while (len >= 0)
   {
   baos.write(buffer, 0, len);
   len = is.read(buffer);
   }
   }
   catch (IOException e)
   {
   }
   finally
   {
   if (is != null)
   {
   try
   {
   is.close();
   } catch (IOException e) {}
   }
   }
   }
   }
   
   if (curPart.moveToFirst())
   do
   {
   
   }
   
   Declare permission
   <uses-permission android:name="android.permission.READ_SMS" />
3. Others
   1. About what tables are created in mmssms.db
      1. adb pull /data/data/com.google.providers.telephony/databases/mmssms.db .
      2. strings mmssms.db > tmp.txt
      3. vi tmp.txt, and search 'CREATE TABLE'
   2. All avaliable native providers on Android
      http://dislab.hufs.ac.kr/wiki/Android/Native_Providers
   3. ...
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