ios - 如何从 XMPPRoster 获取好友？

Question

我这样尝试:

XMPPRosterMemoryStorage *xmppRosterMemStorage = [[XMPPRosterMemoryStorage alloc] init];
XMPPRoster *xmppRoster = [[XMPPRoster alloc] initWithRosterStorage:xmppRosterMemStorage
                                         dispatchQueue:dispatch_get_main_queue()];
[xmppRoster addDelegate:self delegateQueue:dispatch_get_main_queue()];
xmppRoster.autoAcceptKnownPresenceSubscriptionRequests = true;
xmppRoster.autoFetchRoster = true;
[xmppRoster activate:xmppStream];
[xmppRoster fetchRoster];

但是 xmppRoster 是空的。为什么？

Answer 1

名册项存储在[xmppRosterMemStorage mainThreadManagedObjectContext]中，您可以将它与NSFetchedResultsController一起用作UITableView的数据源，请参阅 iPhoneXMPP 示例XMPPFramework 源代码