如何清除iOS中未保存的联系人草稿？

Question

1. 打开默认联系表单添加号码
2. 添加号码并单击取消以删除并打开新模式进行确认
3. 选择放弃更改模式关闭

现在，当我打开通讯录时，首先打开模式，其中包含我在通讯录表单中添加的最后一个号码，该号码是从我的应用程序添加的

这是我的代码：

    [self updateRecord:contact withData:contactData];

    CNContactViewController *controller = [CNContactViewController viewControllerForNewContact:contact];

    controller.delegate = self;

    dispatch_async(dispatch_get_main_queue(), ^{
        UINavigationController* navigation = [[UINavigationController alloc] initWithRootViewController:controller];
        UIViewController *viewController = (UIViewController*)[[[[UIApplication sharedApplication] delegate] window] rootViewController];
        while (viewController.presentedViewController)
            {
                viewController = viewController.presentedViewController;
            }
        [viewController presentViewController:navigation animated:YES completion:nil];

        self->updateContactPromise = resolve;

下面是委托方法代码：

    [viewController dismissViewControllerAnimated:YES completion:nil];

    if(updateContactPromise) {

        if (contact) {
            NSDictionary *contactDict = [self contactToDictionary:contact withThumbnails:true];
            updateContactPromise(contactDict);
        } else {
            
            updateContactPromise(nil);
        }

        updateContactPromise = nil;
    }
}

Answer 1

我刚刚看到这篇文章，据我了解，应该避免在通过CNContactViewController取消创建新联系人后，在iPhone上打开联系人应用程序时仍然存在未保存的草稿。我发现，如果 CNMutableContact 首先以读取模式打开，然后通过 contactViewController.allowsEditing = true 设置为更改，并且 contactViewController.setEditing(true,animated: true) 正在做的技巧是避免地址簿中未保存的草稿。

我用 Xcode 16.1 for iOS 18.1 和 SWIFT 6 解决了这个问题。

struct ContactViewControllerRepresentable: UIViewControllerRepresentable {

private var contact = CNMutableContact()

func makeCoordinator() -> Coordinator {
    return Coordinator()
}

func makeUIViewController(context: Context) -> UINavigationController {
    let contactViewController = CNContactViewController(for: contact)
    contactViewController.allowsEditing = true
    contactViewController.setEditing(true, animated: true)
    contactViewController.delegate = context.coordinator
    
    self.contact.givenName = "John"
    self.contact.familyName = "Doe"
    self.contact.phoneNumbers = [CNLabeledValue(
        label: CNLabelPhoneNumberMobile,
        value: CNPhoneNumber(stringValue: "123-456-7890")
    )]
    self.contact.emailAddresses = [CNLabeledValue(
        label: CNLabelWork,
        value: "[email protected]" as NSString
    )]
    
    let navigationController = UINavigationController(rootViewController: contactViewController)
    navigationController.delegate = context.coordinator
    
    return navigationController
}

func updateUIViewController(_ uiViewController: UINavigationController, context: Context) {
    
}
}

class Coordinator: NSObject, @preconcurrency CNContactViewControllerDelegate, UINavigationControllerDelegate {
    func contactViewController(_ viewController: CNContactViewController, didCompleteWith contact: CNContact?) {
        viewController.dismiss(animated: true, completion: nil)
    }
}