联系人在ios中缺less一些必需的关键描述符

我通过使用以下方法检索所有联系人

- (void)getAllContacts:(void(^)(NSArray *array))handler { 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, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName]]]; BOOL success = [store enumerateContactsWithFetchRequest:request error:&fetchError usingBlock:^(CNContact *contact, BOOL *stop) { [contacts addObject:contact]; }]; if (!success) { NSLog(@"error = %@", fetchError); return; } handler((NSArray *)contacts); }]; 

}

联系人列在tableview中。 现在我正在尝试从“中select特定的联系人，

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { CNContact *contact = [arrContacts objectAtIndex:indexPath.row]; NSArray *keys = @[CNContactIdentifierKey, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName]]; CNContactViewController *contactController = [CNContactViewController viewControllerForContact:contact]; contactController.delegate = self; contactController.allowsEditing = YES; contactController.allowsActions = YES; contactController.displayedPropertyKeys = keys; [self.navigationController pushViewController:contactController animated:TRUE]; } 

但它说

联系0x7fc732654530缺less一些所需的关键描述符

请帮我解决，如果有人知道。 谢谢。

Answer 1

在你的keysToFetch数组的末尾添加“CNContactViewController.descriptorForRequiredKeys”。

我做完之后为我工作。

例：

 NSArray *keysToFetch = @[CNContactIdentifierKey, CNContactGivenNameKey, CNContactFamilyNameKey, CNContactPhoneNumbersKey, CNContactImageDataAvailableKey, CNContactImageDataKey, CNContactViewController.descriptorForRequiredKeys]; 

Answer 2

改变你的路线

  CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:@[CNContactIdentifierKey, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName]]]; 

同

  CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:@[CNContactIdentifierKey, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName],[CNContactViewController descriptorForRequiredKeys]]]; 

有人用它迅速添加像

 let request:CNContactFetchRequest request = CNContactFetchRequest(keysToFetch: [CNContactGivenNameKey, CNContactFamilyNameKey, CNContactMiddleNameKey, CNContactEmailAddressesKey,CNContactPhoneNumbersKey,CNContactViewController.descriptorForRequiredKeys()]) 

Answer 3

你需要添加[CNContactViewController descriptorForRequiredKeys]作为[CNContactViewController descriptorForRequiredKeys]的数组，你必须传递你的CNContactFetchRequest 。

例：

 CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:@[CNContactIdentifierKey, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey, [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName], [CNContactViewController descriptorForRequiredKeys]]];