如何使用CNContact.predicateForContacts检索所有联系人?

问题描述

所以我有这段代码可以正常工作，但前提是您在predicateForContacts参数中指定了名称.

So I have this code which works fine, but only if you have specified a name in the predicateForContacts parameter.

func retrieveContactsWithStore(store: CNContactStore) {
    do {
           let predicate = CNContact.predicateForContacts(matchingName: "John")
           let keysToFetch = [CNContactFormatter.descriptorForRequiredKeys(for: .fullName), CNContactPhoneNumbersKey] as [Any]

           let contacts = try store.unifiedContacts(matching: predicate, keysToFetch: keysToFetch as! [CNKeyDescriptor])
           self.objects = contacts
           DispatchQueue.main.async(execute: { () -> Void in
               self.myTableView.reloadData()
           })
       } catch {
           print(error)
       }
}

我想检索通讯录中列出的所有人员的姓名.

I'd like to retrieve all the names of the people listed on address book.

推荐答案

形成一个 CNContactFetchRequest ，指定您想要的键是名称，然后调用 enumerateContacts(with:usingBlock:) .

Form a CNContactFetchRequest specifying that the keys you want are names, and call enumerateContacts(with:usingBlock:).

    let req = CNContactFetchRequest(keysToFetch: [
        CNContactFamilyNameKey as CNKeyDescriptor,
        CNContactGivenNameKey as CNKeyDescriptor
    ])
    try! CNContactStore().enumerateContacts(with: req) {
        contact, stop in
        print(contact) // in real life, probably populate an array
    }

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