2

我正在开发需要将联系人导入的应用程序NSMutableDictionary，但有时人们没有填写所有联系方式。所以只留下号码或公司名称。我是否需要查看所有联系人详细信息以检查哪个字段将是我的“显示名称”。在 Android 中，我知道有displayName变量。但它在 Swift 或 Objective C 中是怎样的呢？

我的代码：

 BOOL success = [addressBook
  enumerateContactsWithFetchRequest:request   
                              error:&contactError       
                         usingBlock:^(CNContact *contact, BOOL *stop){

        NSString * contactId = contact.identifier;
        NSString * firstName = contact.givenName;
        NSString * lastName  = contact.familyName;
                 }];
4

4 回答 4

7

用于CNContactFormatter构建显示名称。为请求指定键时，请使用descriptorForRequiredKeysForStyle以确保您请求了适当的字段。

在 Swift 中，它将是：

let store = CNContactStore()
store.requestAccess(for: .contacts) { granted, error in
    guard granted else {
        print(error?.localizedDescription ?? "Unknown error")
        return
    }

    let request = CNContactFetchRequest(keysToFetch: [CNContactIdentifierKey as CNKeyDescriptor, CNContactFormatter.descriptorForRequiredKeys(for: .fullName)])

    let formatter = CNContactFormatter()
    formatter.style = .fullName

    do {
        try store.enumerateContacts(with: request) { contact, stop in
            if let name = formatter.string(from: contact) {
                print(name)
            }
        }
    } catch let fetchError {
        print(fetchError)
    }
}

您建议您遇到既没有姓名也没有公司，只有电话号码的情况。那么，您必须自己手动处理：

let request = CNContactFetchRequest(keysToFetch: [CNContactIdentifierKey as CNKeyDescriptor, CNContactPhoneNumbersKey as CNKeyDescriptor, CNContactFormatter.descriptorForRequiredKeys(for: .fullName)])

do {
    try store.enumerateContacts(with: request) { contact, stop in
        if let name = formatter.string(from: contact) {
            print(name)
        } else if let firstPhone = contact.phoneNumbers.first?.value {
            print(firstPhone.stringValue)
        } else {
            print("no name; no number")
        }
    }
} catch let fetchError {
    print(fetchError)
}

对于 Swift 2，请参阅此答案的先前版本。

于 2016-04-26T09:22:38.053 回答
1

您可以使用此代码从电话簿中获取联系人姓名：-

- (void) fetchContacts
{
    CNAuthorizationStatus status = [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts];
    if (status == CNAuthorizationStatusDenied || status == CNAuthorizationStatusDenied) {
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:@"This app previously was refused permissions to contacts; Please go to settings and grant permission to this app so it can use contacts" preferredStyle:UIAlertControllerStyleAlert];

        [alert addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil]];
        [self presentViewController:alert animated:TRUE completion:nil];
        return;
    }

    CNContactStore *store = [[CNContactStore alloc] init];    [store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {

        // make sure the user granted us access

        if (!granted) {
            dispatch_async(dispatch_get_main_queue(), ^{
                // user didn't grant access;
                // so, again, tell user here why app needs permissions in order  to do it's job;
                // this is dispatched to the main queue because this request could be running on background thread
            });
            return;
        }

        // build array of contacts

        NSMutableArray *contacts = [NSMutableArray array];

        NSError *fetchError;
        CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:@[CNContactIdentifierKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName]]];

        BOOL success = [store enumerateContactsWithFetchRequest:request error:&fetchError usingBlock:^(CNContact *contact, BOOL *stop) {
            [contacts addObject:contact];
        }];



        if (!success) {
            NSLog(@"error = %@", fetchError);
        }



        // you can now do something with the list of contacts, for example, to show the names

        CNContactFormatter *formatter = [[CNContactFormatter alloc] init];

        for (CNContact *contact in contacts) {
            if (!_contacts) {
                _contacts = [[NSMutableArray alloc] init];
            }

            NSString *string = [formatter stringFromContact:contact];
            NSLog(@"contact = %@", string);
            [_contacts addObject:string];
        }
        [_contactatableview reloadData];

    }];
}
于 2016-04-26T08:59:36.677 回答
0 
#import <Contacts/Contacts.h>
#import <ContactsUI/ContactsUI.h>


- (IBAction)displayContact:(id)sender {

    id keysToFetch = @[[CNContactViewController descriptorForRequiredKeys]];
     CNContact *contact = [self.store unifiedContactWithIdentifier:self.contactIdentifier keysToFetch:keysToFetch error:nil];

    self.controller = [[CNContactViewController alloc] init];

    [self.controller.view setFrameSize:NSMakeSize(500, 500)];

    [self presentViewController:self.controller asPopoverRelativeToRect:self.view.bounds ofView: self.view preferredEdge: NSMaxXEdge behavior:NSPopoverBehaviorTransient];

    self.controller.contact = contact;
}
于 2016-04-26T08:57:52.993 回答
0

从设备中获取联系人

if (isIOS9) { //checking iOS version of Device

    CNContactStore *store = [[CNContactStore alloc] init];

    //keys with fetching properties
    NSArray *keys = @[CNContactFamilyNameKey, CNContactGivenNameKey, CNContactPhoneNumbersKey, CNContactEmailAddressesKey,CNContactPostalAddressesKey, CNLabelWork, CNLabelDateAnniversary];

    NSString *containerId = store.defaultContainerIdentifier;

    NSPredicate *predicate = [CNContact predicateForContactsInContainerWithIdentifier:containerId];
    NSError *error;
    NSArray *cnContacts = [store unifiedContactsMatchingPredicate:predicate keysToFetch:keys error:&error];
    DLOG(@"cnContacts %lu",(unsigned long)cnContacts.count);

    if (error) {
        //error
    } else {

        for (CNContact *contact in cnContacts) {

            //iterate over cnContacts to get details
        }

    }

} else {

    //for below iOS 9
    ABAddressBookRef addressBook = ABAddressBookCreate();

    CFArrayRef arrPersons = ABAddressBookCopyArrayOfAllPeople(addressBook);
    CFIndex count = ABAddressBookGetPersonCount(addressBook);
    NSLog(@"cnContacts %lu",(unsigned long)count);

    for (int i = 0; i < count; i++) {

        ABRecordRef record = CFArrayGetValueAtIndex(arrPersons,i);

        //use kABPersonBirthdayProperty to get b’day
        NSString *birthDay = (__bridge NSString *)(ABRecordCopyValue(record, kABPersonBirthdayProperty));
        NSLog(@“B’day %@”, birthDay);
    }

}
于 2016-04-26T09:03:28.167 回答