Ios UIActivityViewController联系人共享？

我正在考虑一种使用

UIActivityViewController

（或使用SMS）从一台设备到另一台设备共享联系人的方法

到目前为止，我一直在寻找，我不知道如何在使用我的应用程序的设备之间共享联系人

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有什么想法吗？

经过几个月的探索，我终于找到了实现这一目标的方法

您可以使用此代码在UIActivityViewController中共享单个CNContact：

let contact: CNContact = /* your contact here */

let fileManager = NSFileManager.defaultManager()
let cacheDirectory = try! fileManager.URLForDirectory(NSSearchPathDirectory.CachesDirectory, inDomain: NSSearchPathDomainMask.UserDomainMask, appropriateForURL: nil, create: true)

let fileLocation = cacheDirectory.URLByAppendingPathComponent("\(CNContactFormatter().stringFromContact(contact)!).vcf")

let contactData = try! CNContactVCardSerialization.dataWithContacts([contact])
contactData.writeToFile(fileLocation.path!, atomically: true)

let activityVC = UIActivityViewController(activityItems: [fileLocation], applicationActivities: nil)
presentViewController(activityVC, animated: true, completion: nil)

guard let
        fileUrl = AB_RecordVcardFileURL(record)
else {return}

let activity = UIActivityViewController(activityItems: [fileUrl], applicationActivities: nil)
presentViewController(activity, animated: true, completion: nil)

此代码将联系人转换为其NSData表示形式，将其保存到应用程序的缓存文件夹，并将文件作为活动项共享

如果要共享多个联系人，可以通过这种方式传递多个文件

编辑：Swift 3.0版本

---

以类似的方式使用旧的ABAddressBook框架也可以轻松实现这一点（制作vCard表示，将其保存到文件，共享URL）：

然后将URL传递给活动控制器：

let contact: CNContact = /* your contact here */

let fileManager = NSFileManager.defaultManager()
let cacheDirectory = try! fileManager.URLForDirectory(NSSearchPathDirectory.CachesDirectory, inDomain: NSSearchPathDomainMask.UserDomainMask, appropriateForURL: nil, create: true)

let fileLocation = cacheDirectory.URLByAppendingPathComponent("\(CNContactFormatter().stringFromContact(contact)!).vcf")

let contactData = try! CNContactVCardSerialization.dataWithContacts([contact])
contactData.writeToFile(fileLocation.path!, atomically: true)

let activityVC = UIActivityViewController(activityItems: [fileLocation], applicationActivities: nil)
presentViewController(activityVC, animated: true, completion: nil)

guard let
        fileUrl = AB_RecordVcardFileURL(record)
else {return}

let activity = UIActivityViewController(activityItems: [fileUrl], applicationActivities: nil)
presentViewController(activity, animated: true, completion: nil)

Swift 3.0：

    let cacheDirectory = try! FileManager.default.url(for: FileManager.SearchPathDirectory.cachesDirectory, in: FileManager.SearchPathDomainMask.userDomainMask, appropriateFor: nil, create: true)

    let fileLocation = cacheDirectory.appendingPathComponent("\(CNContactFormatter().string(from: contact)!).vcf")

    let contactData = try! CNContactVCardSerialization.data(with: [contact])
    do {
        _ = try contactData.write(to: fileLocation, options: .atomic)
    } catch let error {
        print(error)
    }

版本：Swift 4.2，以避免在联系人没有姓名时崩溃。 如果您的联系人没有姓名字段，并且当您尝试执行CNContactFormatter（）.string（from:cnContact）时，它将崩溃，因为它将返回nil。所以，为了避免崩溃，请给出一些默认名称，不要强行这样做

let cnContact : CNContact = CNContact()
 let fileManager = FileManager.default
        do {
            let cacheDirectory = try? fileManager.url(for: .cachesDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
            let fileLocation = cacheDirectory?.appendingPathComponent("\(CNContactFormatter().string(from: cnContact) ?? "Contact")).vcf")
            let contactData = try? CNContactVCardSerialization.data(with: [cnContact])
            try? contactData?.write(to: (fileLocation?.asURL())!, options: .atomicWrite)
            attachedFiles.append(fileLocation!)
        } catch let error {
            logger.info("share contact failed due to :\(error)")
        }