如何獲取一位聯系人的生日-迅捷的iOS 9

Question

我對Swift和iOS相對較新，並且在與通訊錄集成時遇到了一些麻煩。 我已經使用了蘋果的資源（ https://developer.apple.com/library/prerelease/mac/documentation/Contacts/Reference/Contacts_Framework/index.html ），但我不知道如何獲取單個聯系人的生日。 我想使用用戶輸入的名稱，並將匹配聯系人的生日輸出到標簽。 我正在使用let contacts = try store.unifiedContactsMatchingPredicate(CNContact.predicateForContactsMatchingName("\\(fullnamefield.text!) \\(lastnamefield.text!) \\(suffixfield.text!)"), keysToFetch:[CNContactBirthdayKey]) ，但是此結果在一個我無法理解的數組中。

非常感謝您在新的聯系人框架中快速找到特定聯系人生日的幫助。

Answer 1

我相信該數組的類型為[CNContact] 。 您將需要遍歷它並檢索birthday屬性，但是如果您僅找到一個聯系人，則可以從數組中獲取第一項並獲取其生日：

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)
}