Question

点击“确定”提醒按钮后如何从表格视图中删除重复的联系人？

这是我的findDuplicateContacts（）

@objc fileprivate func findDuplicateContacts() {
    let keys = [CNContactIdentifierKey as CNKeyDescriptor, CNContactFormatter.descriptorForRequiredKeys(for: .fullName)]
    let request = CNContactFetchRequest(keysToFetch: keys)
    var contactsByName = [String: [CNContact]]()

    do {
        try self.contactStore.enumerateContacts(with: request) { contact, stop in
            guard let name = CNContactFormatter.string(from: contact, style: .fullName) else { return }
            contactsByName[name] = (contactsByName[name] ?? []) + [contact]   // or in Swift 4, `contactsByName[name, default: []].append(contact)`

        }
    } catch let err {
        print("error:", err)
    }

    let duplicates = contactsByName.filter { $1.count > 1 }
    let alert = UIAlertController(title: "Alert", message: "Number of duplicates: \(duplicates.count)", preferredStyle: UIAlertControllerStyle.alert)
    alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: {(action:UIAlertAction!) in
        //HERE I WANT TO REMOVE DUPLICATES
        print("you have pressed the ok button")
    }))
    alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.default, handler: nil))
    self.present(alert, animated: true, completion: nil)
    print(duplicates)
    self.tableView.reloadData()

}

提前致谢

Answer 1

您应该使用CNSaveRequest类func delete(_ contact: CNMutableContact)方法，使用func execute(_ saveRequest: CNSaveRequest)类的CNContactStore方法执行

此示例删除所有其他联系人并仅保留一个（位置0），但您可以添加一种方法来确定哪个联系人更完整并保留该联系人

完整代码

alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: {(action:UIAlertAction!) in
            print("you have pressed the ok button")
            var arrayOfContactsRequests : [CNSaveRequest] = []
            for dict in duplicates {
                for (index,contact) in dict.value.enumerated() {
                    if(index != 0) {
                        let saveRequest = CNSaveRequest()
                        saveRequest.delete(contact.mutableCopy() as! CNMutableContact)
                        arrayOfContactsRequests.append(saveRequest)
                    }
                }
            }
            debugPrint(duplicates)
            for request in arrayOfContactsRequests {
                do{
                try self.contactStore.execute(request)
                }
                catch let err {
                    print("error:", err)
                }
            }
        }))

在这个答案How to convert CNContact to CNMutableContact?

的帮助下，这个答案是可能的

如何删除重复的联系人与确定警报按钮？

1 个答案: