当联系人添加swift时重新加载表格视图

Question

我使用ContactUI FrameWork来获取、编辑和创建新的Conatact。VC1中有一个表视图用于显示联系人，还有另一个视图控制器用于编辑或创建新联系人。问题是VC1中的表视图在VC2中编辑或创建联系人时不更新。

型号：

class ContactStruct : NSObject {
let identifier : String
let thumbnailImageData : UIImage?
let givenName : String
let familyName : String
let phoneNumbers : String
let emailAddresses : String
init(identi:String,img:UIImage?,name:String,family:String,phone:String,email:String) {
self.identifier = identi
self.thumbnailImageData = img
self.givenName = name
self.familyName = family
self.phoneNumbers = phone
self.emailAddresses = email
}
class func generateModelArray() -> [ContactStruct]{
let contactStore = CNContactStore()
var contactsData = [ContactStruct]()
let key = [CNContactGivenNameKey,CNContactFamilyNameKey,CNContactImageDataKey,CNContactThumbnailImageDataKey,CNContactPhoneNumbersKey,CNContactEmailAddressesKey,CNLabelPhoneNumberMobile] as [CNKeyDescriptor]
let request = CNContactFetchRequest(keysToFetch: key)
try? contactStore.enumerateContacts(with: request, usingBlock: { (contact, stoppingPointer) in
let givenName = contact.givenName
let familyName = contact.familyName
let emailAddress = contact.emailAddresses.first?.value ?? ""
let phoneNumber = contact.phoneNumbers.first?.value.stringValue ?? ""
let identifier = contact.identifier
var image : UIImage?
if contact.thumbnailImageData != nil{
image = UIImage(data: contact.thumbnailImageData!)!
}
contactsData.append(ContactStruct(identi: identifier, img: image, name: givenName, family: familyName, phone: phoneNumber, email: emailAddress as String))
})
return contactsData
}
}

我在VC1中以多种方式重新加载表视图，但它不起作用。当我再次运行应用程序表视图以显示更改。

在VC1:中重新加载表视图的方法

VC2:中的委托

protocol InsertContactViewControllerDelegate {
func applyingFor_reloadTableView()
}
class InsertContactViewController: UIViewController {
var delegate : InsertContactViewControllerDelegate?
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func btnUpdate_DidTouch(_ sender: Any) {
if let delegate = self.delegate {
delegate.applyingFor_reloadTableView()
}
modifyContact(contactIdentifier: stridentifier)
self.navigationController?.popViewController(animated: true)
}

在vc1:中

class NewContactViewController:UIViewController, 
BackGroundViewControllerDelegate {
@IBOutlet weak var tblMain: UITableView!
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let story = UIStoryboard(name: "Main", bundle: nil)
let vc = story.instantiateViewController(withIdentifier: "InsertContactViewController") as! InsertContactViewController
vc.delegate = self
self.navigationController?.pushViewController(vc, animated: true)
}
func applyingFor_reloadTableView() {
self.tblMain.reloadData()
}
}

修改联系人方法，我将联系人标识符传递给VC2以更新它：

func modifyContact(contactIdentifier:String) {
let key = [CNContactGivenNameKey,CNContactFamilyNameKey,CNContactImageDataKey,CNContactThumbnailImageDataKey,CNContactEmailAddressesKey,CNContactPhoneNumbersKey] as [CNKeyDescriptor]
let contact = try?  contactStore.unifiedContact(withIdentifier: contactIdentifier, keysToFetch: key)
let mutableContact = contact?.mutableCopy() as! CNMutableContact
let indexpath0 = IndexPath(row: 0, section: 0)
let cell = tblInsert.cellForRow(at: indexpath0) as! InsertTableCell0
let name = cell.txtFirstName.text
let family = cell.txtLastName.text
mutableContact.givenName = name!
mutableContact.familyName = family!
let indexpath1 = IndexPath(row: 0, section: 1)
let cell1 = tblInsert.cellForRow(at: indexpath1) as! InsertTableCell1
let phone : String = cell1.txtPhoneNumber.text!
mutableContact.phoneNumbers = [CNLabeledValue(label: CNLabelPhoneNumberMobile, value:CNPhoneNumber(stringValue: phone))]
let indexpath2 = IndexPath(row: 0, section: 2)
let cell2 = tblInsert.cellForRow(at: indexpath2) as! InsertTableCell2
let email : String = cell2.txtEmail.text!
mutableContact.emailAddresses = [CNLabeledValue(label: CNLabelHome, value: email as NSString)]
let saveRequest = CNSaveRequest()
saveRequest.update(mutableContact)
try! contactStore.execute(saveRequest)
}

Answer 1

在更新联系人之前，您正在重新加载VC1 tableView。首先更新联系人并重新加载表格查看

代码：

@IBAction func btnUpdate_DidTouch(_ sender: Any) {
modifyContact(contactIdentifier: stridentifier)
if let delegate = self.delegate {
delegate.applyingFor_reloadTableView()
}
self.navigationController?.popViewController(animated: true)
}

func applyingFor_reloadTableView() {
tableViewDataSource = ContactStruct.generateModelArray() // used your dataSource variable instead of tableViewDataSource.
self.tblMain.reloadData()
}