在iOS 8中，ABPeoplePickerNavigationController具有:
// Optionally determines if a person can be selected or not.
// If not set, all persons will be selectable.
//
@property(nonatomic,copy) NSPredicate *predicateForEnablingPerson NS_AVAILABLE_IOS(8_0);
我想禁用没有街道地址的通讯录联系人。
我已经看到(并测试)了以下内容，这些内容仅启用具有至少一个电子邮件地址的联系人:
if ([peoplePickerNavigationController respondsToSelector:@selector(predicateForEnablingPerson)]) {
peoplePickerNavigationController.predicateForEnablingPerson = [NSPredicate predicateWithFormat:@"emailAddresses.@count > 0"];
}
我如何替换字符串
"emailAddresses.@count > 0"以便仅启用具有至少一个街道地址的联系人？ 最佳答案
您可以使用:
controller.predicateForEnablingPerson = [NSPredicate predicateWithFormat:@"%K.@count > 0", ABPersonPostalAddressesProperty];
标题提供了要在谓词中使用的可接受常量的列表:
// Constants to use in predicates:
// A LabeledValue has a 'label' property and a 'value' property.
// A PhoneNumber has a 'stringValue' property, a 'countryCode' property, a 'formattedStringValue' property and a 'normalizedStringValue' property
// A InstantMessageAddress has a 'username' property and a 'service' property
// A SocialProfile has a 'username' property and a 'service' property
// A PostalAddress has a 'street' property, a 'subLocality' property, a 'city' property, a 'subAdministrativeArea' property, a 'state' property, a 'postalCode' property, a 'country' property and a 'ISOCountryCode' property
//
extern NSString * const ABPersonNamePrefixProperty NS_AVAILABLE_IOS(8_0); // "namePrefix" NSString
extern NSString * const ABPersonGivenNameProperty NS_AVAILABLE_IOS(8_0); // "givenName" NSString
extern NSString * const ABPersonMiddleNameProperty NS_AVAILABLE_IOS(8_0); // "middleName" NSString
extern NSString * const ABPersonFamilyNameProperty NS_AVAILABLE_IOS(8_0); // "familyName" NSString
extern NSString * const ABPersonNameSuffixProperty NS_AVAILABLE_IOS(8_0); // "nameSuffix" NSString
extern NSString * const ABPersonPreviousFamilyNameProperty NS_AVAILABLE_IOS(8_0); // "previousFamilyName" NSString
extern NSString * const ABPersonNicknameProperty NS_AVAILABLE_IOS(8_0); // "nickname" NSString
extern NSString * const ABPersonPhoneticGivenNameProperty NS_AVAILABLE_IOS(8_0); // "phoneticGivenName" NSString
extern NSString * const ABPersonPhoneticMiddleNameProperty NS_AVAILABLE_IOS(8_0); // "phoneticMiddleName" NSString
extern NSString * const ABPersonPhoneticFamilyNameProperty NS_AVAILABLE_IOS(8_0); // "phoneticFamilyName" NSString
extern NSString * const ABPersonOrganizationNameProperty NS_AVAILABLE_IOS(8_0); // "organizationName" NSString
extern NSString * const ABPersonDepartmentNameProperty NS_AVAILABLE_IOS(8_0); // "departmentName" NSString
extern NSString * const ABPersonJobTitleProperty NS_AVAILABLE_IOS(8_0); // "jobTitle" NSString
extern NSString * const ABPersonBirthdayProperty NS_AVAILABLE_IOS(8_0); // "birthday" NSDateComponents
extern NSString * const ABPersonNoteProperty NS_AVAILABLE_IOS(8_0); // "note" NSString
extern NSString * const ABPersonPhoneNumbersProperty NS_AVAILABLE_IOS(8_0); // "phoneNumbers" array of LabeledValue with PhoneNumber values
extern NSString * const ABPersonEmailAddressesProperty NS_AVAILABLE_IOS(8_0); // "emailAddresses" array of LabeledValue with NSString values
extern NSString * const ABPersonUrlAddressesProperty NS_AVAILABLE_IOS(8_0); // "urlAddresses" array of LabeledValue with NSString values
extern NSString * const ABPersonDatesProperty NS_AVAILABLE_IOS(8_0); // "dates" array of LabeledValue with NSDateComponents values
extern NSString * const ABPersonInstantMessageAddressesProperty NS_AVAILABLE_IOS(8_0); // "instantMessageAddresses" array of LabeledValue with InstantMessageAddress values
extern NSString * const ABPersonRelatedNamesProperty NS_AVAILABLE_IOS(8_0); // "relatedNames" array of LabeledValue with NSString values
extern NSString * const ABPersonSocialProfilesProperty NS_AVAILABLE_IOS(8_0); // "socialProfiles" array of LabeledValue with SocialProfile values
extern NSString * const ABPersonPostalAddressesProperty NS_AVAILABLE_IOS(8_0); // "postalAddresses" array of LabeledValue with PostalAddress values
如果您查看标题，则为
postalAddresses