You should also be able to add, delete, and modify contacts from the list.

您还应当能够在列表中添加、删除和修改联系人。

youdao

In the examples, you'll retrieve contacts from a user's address book, add new contacts, modify and delete contacts, and control the data returned in a contact feed.

在这些例子中，您将从用户的地址簿中检索联系人、添加新联系人、修改和删除联系人，以及控制联系人提要中返回的数据。

youdao

You will need a Main Edit page that also lists contacts, but that also lets you delete or modify a selection.

您将需要主编辑页面，这个页面也列出联系人，但还让您删除或修改选中的联系人。

youdao

Until access has been granted, the ABAddressBookRef object will not contain any contacts, and any attempt to modify contacts fails with akABOperationNotPermittedByUserError error.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog