iOS Swift 3 - 删除联系信息字段周年纪念日

Question

是否可以在 Swift 3 中批量删除特定联系人选择中的周年纪念字段？

我找到了将周年纪念信息添加到联系人的代码，但我正在寻找用于从特定联系人中删除现有周年纪念信息的代码。

要添加的示例：

//add anniversary
let anniversaryDate = NSDateComponents()
anniversaryDate.month = 6
anniversaryDate.day = 13
let anniversary = CNLabeledValue(label: "Anniversary",
  value: anniversaryDate)
fooBar.dates = [anniversary]

//save
let request = CNSaveRequest()
request.addContact(fooBar, toContainerWithIdentifier: nil)
do{
  try storeo.executeSaveRequest(request)
  print("Successfully stored the contact")
} catch let err{
  print("Failed to save the contact. \(err)")
}

Answer 1

您可以过滤日期，然后更新联系人。

let mutableContact = contact.mutableCopy() as! CNMutableContact

let dates = mutableContact.dates.filter({ $0.label != "Anniversary" })

mutableContact.dates = dates

let request = CNSaveRequest()
request.updateContact(mutableContact)

do {

    try contactStore.executeSaveRequest(request)

} catch let error {

    print("Failed to updated contact. \(error)")
}