Launch the 'Add Contact'
// Add listener so your activity gets called back upon completion of action,
// in this case with ability to get handle to newly added contact
myActivity.addActivityListener(someActivityListener);
Intent intent = new Intent(Intent.ACTION_INSERT);
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
// Just two examples of information you can send to pre-fill out data for the
// user. See android.provider.ContactsContract.Intents.Insert for the complete
// list.
intent.putExtra(ContactsContract.Intents.Insert.NAME, "some Contact Name");
intent.putExtra(ContactsContract.Intents.Insert.PHONE, "some Phone Number");
// Send with it a unique request code, so when you get called back, you can
// check to make sure it is from the intent you launched (ideally should be
// some public static final so receiver can check against it)
int PICK_CONTACT = 100;
myActivity.startActivityForResult(intent, PICK_CONTACT);