using checkbox to filter contacts and get phone number

I am working on an app that works similar to the default text messaging app on all Android phones. My problem is selecting more than one user to send an SMS message to. What I have done so far is stored my contacts as listview items with check boxes. Now I just need to get the phone numbers from the selected contacts. So what I am having trouble on doing. 1) Pulling a phone number from the contacts displayed in my listview 2)displaying that number in a textview in a new activity Sorry if my code is difficult to understand, please ask if you need clerification. This is the XML in which the listview is shown, called contact_manager.xml:

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