iOS8通讯录信息读取兼容

项目中有一个功能需要读取通讯录中联系人的手机。在iOS8以前都是可用的，主要使用如下三个代理方法来实现

- (void) peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker

- (BOOL) peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person 

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier
{
    return NO;
}

// Deprecated, use predicateForSelectionOfPerson and/or -peoplePickerNavigationController:didSelectPerson: instead.
- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person NS_DEPRECATED_IOS(2_0, 8_0);

// Deprecated, use predicateForSelectionOfProperty and/or -peoplePickerNavigationController:didSelectPerson:property:identifier: instead.
- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier NS_DEPRECATED_IOS(2_0, 8_0);

参考文档发现可以使用如下两个方法来代替：

// Called after a person has been selected by the user.
- (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController*)peoplePicker didSelectPerson:(ABRecordRef)person NS_AVAILABLE_IOS(8_0);

// Called after a property has been selected by the user.
- (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController*)peoplePicker didSelectPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier NS_AVAILABLE_IOS(8_0);

其中：

第一个方法是选中这个人之后调用。

第二个方法是选中这个人的详细信息后调用。

解析具体信息的代码可以完全不变