Question

我试图在xmpp asmack中阻止用户，以下是代码：

try {
        PrivacyListManager privacyManager = PrivacyListManager
                .getInstanceFor(MyXMPPConnection.getXMPPConnection());
        if (privacyManager == null) {
            return false;
        }
        String Black_List = "blockedList";
        PrivacyList[] plists = privacyManager.getPrivacyLists();
        if (plists.length == 0) {// No blacklisted or is not listed, direct getPrivacyList error
            List<PrivacyItem> items = new ArrayList<PrivacyItem>();
            Log.i("", "addToPrivacyList plists.length==0");
            PrivacyItem newitem = new PrivacyItem("jid", false, 100);
            newitem.setValue(name);
            items.add(newitem);

            privacyManager.updatePrivacyList(Black_List, items);
            privacyManager.setActiveListName(Black_List);
            return true;
        }

        PrivacyList plist = privacyManager.getPrivacyList(Black_List);
        if (plist != null) {
            String ser = "@" + connection.getServiceName();

            List<PrivacyItem> items = plist.getItems();
            for (PrivacyItem item : items) {
                String from = item.getValue().substring(0,
                        item.getValue().indexOf(ser));
                Log.i("",
                        "addToPrivacyList item.getValue=" + item.getValue());
                if (from.equalsIgnoreCase(name)) {
                    items.remove(item);
                    break;
                }
            }

            PrivacyItem newitem = new PrivacyItem("jid", false, 100);
            newitem.setValue(name + "@"
                    + connection.getServiceName());
            items.add(newitem);
            Log.i("", "addToPrivacyList item.getValue=" + newitem.toXML());
            Log.i("", "deleteFromPrivacyList items size=" + items.size());
            privacyManager.updatePrivacyList(Black_List, items);
            privacyManager.setActiveListName(Black_List);

        }
        return true;
    } catch (Exception e) {
        e.printStackTrace();
    }

我将privacyManager视为空

PrivacyListManager privacyManager = PrivacyListManager
                    .getInstanceFor(MyXMPPConnection.getXMPPConnection());

连接很好，我正在努力解决这个问题。 SO帖子都没有帮助我。我想知道为什么privacyManager变为null。请帮我解决问题。谢谢。

Answer 1

我解决了这个问题，我不知道为什么privacylist类没有加载到jvm onload.so我明确地将类加载为 Class.forName（PrivacyListManager.class.getName（））;`< / p>

 try {
        ProviderManager.getInstance().addIQProvider("query", "jabber:iq:privacy", new PrivacyProvider());
        Class.forName(PrivacyListManager.class.getName());
}

PrivacyListManager.getInstanceFor（xmppConnection）在阻止xmpp asmack中的用户时返回null

1 个答案: