CNChangeHistoryEventVisitor
An interface for receiving notice of changes to contacts and groups.
Declaration
protocol CNChangeHistoryEventVisitor : NSObjectProtocolOverview
Implement this protocol to receive events that describe when a user adds, updates, or deletes contacts or groups outside your app.
Topics
Updating contacts
Updating groups
Updating subgroups
Updating contacts in groups
Resetting synced data
See Also
Change history data
CNChangeHistoryAddContactEventCNChangeHistoryAddGroupEventCNChangeHistoryAddMemberToGroupEventCNChangeHistoryAddSubgroupToGroupEventCNChangeHistoryDeleteContactEventCNChangeHistoryDeleteGroupEventCNChangeHistoryDropEverythingEventCNChangeHistoryEventCNChangeHistoryFetchRequestCNChangeHistoryRemoveMemberFromGroupEventCNChangeHistoryRemoveSubgroupFromGroupEventCNChangeHistoryUpdateContactEventCNChangeHistoryUpdateGroupEvent