Question

我对swift和iOS相对较新，我在使用Contacts时遇到了一些问题。我使用过苹果公司的资源（https://developer.apple.com/library/prerelease/mac/documentation/Contacts/Reference/Contacts_Framework/index.html），但我无法弄清楚如何获取单个联系人的生日。我想获取用户输入的名称，并将匹配的联系人生日输出到标签。我正在使用let contacts = try store.unifiedContactsMatchingPredicate(CNContact.predicateForContactsMatchingName("\(fullnamefield.text!) \(lastnamefield.text!) \(suffixfield.text!)"), keysToFetch:[CNContactBirthdayKey])，但这会产生一个我无法理解的数组。

非常感谢您使用新的“联系框架”快速找到查找特定联系人生日的帮助。

Answer 1

我相信数组的类型为[CNContact]。您需要遍历它并检索birthday属性，但如果您只找到一个联系人，则可以从阵列中获取第一个项目并获得它的生日：

let store = CNContactStore()

//This line retrieves all contacts for the current name and gets the birthday and name properties
let contacts:[CNContact] = try store.unifiedContactsMatchingPredicate(CNContact.predicateForContactsMatchingName("\(fullnamefield.text!) \(lastnamefield.text!) \(suffixfield.text!)"), keysToFetch:[CNContactBirthdayKey, CNContactGivenNameKey])

//Get the first contact in the array of contacts (since you're only looking for 1 you don't need to loop through the contacts)
let contact = contacts[0]

//Check if the birthday field is set
if let bday = contact.birthday?.date as NSDate! {
    //Use the NSDateFormatter to convert their birthday (an NSDate) to a String
    let formatter = NSDateFormatter()
    formatter.timeZone = NSTimeZone(name: "UTC") // You must set the time zone from your default time zone to UTC +0, which is what birthdays in Contacts are set to.
    formatter.dateFormat = "dd/MM/yyyy" //Set the format of the date converter
    let stringDate = formatter.stringFromDate(contact.birthday!.date!)

    //Their birthday as a String:
    print(stringDate)
}

如何获取一个联系人的生日快捷iOS 9

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