show, add , edit and delete data in android application [on hold]

I'm working on an android project application that show data and has the option to add, delete and edit the shown data. The app should run the data from an existing XML file and update it if any changes are done . Below is the example given with the app :

    <directory
    type="faculty"
    name="Frank Buttler"
    position="Assistant Professor"
    office="E&CS room 3204"
    email="frank @ live.com"
    phone="(743)543-7658"
    offile_hour="10-11am Mon,thursday"
    <coursename="Wireless Network and Systems" CRN="CS 795""/>"
    </directory>
    <directory
    type="Staff"
    name="Steve jobs"
    position="Head Secretary"
    office="E&CS 3300"
    phone="(717)623-3441 x 4817"
    email="hello @ y .net "
    office_hour=""   >
    </directory> )