Question

尝试使用联系人的vCard表示来获取NSData对象。使用以下界面。

+ (NSData *)dataWithContacts:(NSArray *)contacts
                   error:(NSError * _Nullable *)error

在将一个CNContact传递给上面的接口时获得了一个NSData对象。这是工作代码

CNMutableContact * contact = [CNMutableContact new];
contact.middleName = @"Stalin";
contact.contactType = CNContactTypePerson;
contact.givenName = @"Gates";
contact.familyName = @"GemmyApps";
NSData *bufferedData = [CNContactVCardSerialization dataWithContacts:contact error:nil];

在将CNContacts的NSArray传递给上述接口时无法获取NSData对象。这是代码

CNContactStore* contactStore = [[CNContactStore alloc]init];
NSArray * keysToFetch =@[CNContactEmailAddressesKey, CNContactPhoneNumbersKey, CNContactFamilyNameKey, CNContactGivenNameKey, CNContactPostalAddressesKey];
NSMutableArray  *arrFetchedcontact = [contactStore unifiedContactsMatchingPredicate:[CNContact predicateForContactsInContainerWithIdentifier: @[contactStore.defaultContainerIdentifier][0]] keysToFetch:keysToFetch error:nil];
 NSData *bufferedData = [CNContactVCardSerialization dataWithContacts:arrFetchedcontact error:nil];

lldb消息：将联系人写入vCard（数据）的异常：获取联系人时未请求属性。

Answer 1

这样你就可以通过传递数据来获取数据，

CNMutableContact * contact = [CNMutableContact new];
contact.middleName = @"Stalin";
contact.contactType = CNContactTypePerson;
contact.givenName = @"Gates";
contact.familyName = @"GemmyApps";

CNMutableContact *contact2 = [CNMutableContact new];
contact.middleName = @"Stalin1";
contact.contactType = CNContactTypePerson;
contact.givenName = @"Gates1";
contact.familyName = @"GemmyApps1";

NSArray *contactArr = [NSArray arrayWithObjects:contact,contact2,nil];

NSData *bufferedData = [CNContactVCardSerialization dataWithContacts:contactArr error:nil];



NSLog(@"data length %d",bufferedData.length);
NSLog(@"contact is %@",contact);

无法返回指定CNContacts

1 个答案: