如何aSmack XMPP创建集团在android系统？ [英] How to create Group in aSmack xmpp in android ?

问题描述

我收到类转换异常，而在Android的创造睦。

  E / AndroidRuntime（31002）：java.lang.ClassCastException：产生的原因：
org.jivesoftware.smack.packet.DefaultPacketExtension
E / AndroidRuntime（31002）：在
org.jivesoftware.smackx.muc.MultiUserChat.getMUCUserExtension（MultiUserChat.java:2000）
E / AndroidRuntime（31002）：在
org.jivesoftware.smackx.muc.MultiUserChat.create（MultiUserChat.java:364）
 

解决方案

您可以创建用户组按

 公共布尔createGroup（XMPPConnection连接，弦乐组名）{
如果（连接== NULL）
返回false;
尝试{
。connection.getRoster（）createGroup（组名）;
Log.v（创建组，组名）;
返回true;
}赶上（例外五）{
e.printStackTrace（）;
返回false;
}
}
 

如果您wated创建群聊在XMPP试试下面的方法。 （**未选中）

 公共类createMucAT扩展的AsyncTask＆LT;太虚，太虚，MultiUserChat＆GT; {    私人RosterGroup组;
    专用连接康恩;
    私人字符串的groupId;
    私人字符串的groupName;
    公共createMucAT（康涅狄格州连接，RosterGroup组，弦乐的groupId，
            串组名）{
        this.group =组;
        this.conn =康恩;
        this.groupId =的groupId;
        this.groupName =组名;
    }    @覆盖
    保护MultiUserChat doInBackground（虚空...... PARAMS）{
        串groupTag = group.getName（）;
        MultiUserChat聊天= NULL;
        尝试{
            聊天= createGroupChat（康涅狄格州的groupId，groupTag，conn.getUser（））;
        }赶上（XMPPException E）{
            e.printStackTrace（）;
        }
        返回聊天;
    }    @覆盖
    保护无效onPostExecute（MultiUserChat结果）{
        super.onPostExecute（结果）;
        //这里处理结果
    }    私人MultiUserChat createGroupChat（康涅狄格州的连接，字符串的groupId，弦乐组名，字符串昵称）抛出XMPPException {
        MultiUserChat睦=新MultiUserChat（康涅狄格州的groupId +@+ ConnectionService.CONFERENCE_IP_ADDRESS）;
        muc.create（昵称）;
        表格形式= muc.getConfigurationForm（）;
        形成submitForm = form.createAnswerForm（）;
        对于（迭代器＆LT; FormField＆GT;域= form.getFields（）; fields.hasNext（）;）{
            FormField字段=（FormField）fields.next（）;
            如果（FormField.TYPE_HIDDEN.equals（field.getType（））及！＆放大器; field.getVariable（）！= NULL）{
                submitForm.setDefaultAnswer（field.getVariable（））;
                }
        }
        清单＆LT;串GT;业主=新的ArrayList＆LT;串GT;（）;
        owners.add（。ConnectionService.getConnection（）的getUser（）的toString（））;
        submitForm.setAnswer（睦＃roomconfig_roomowners，业主）;
        submitForm.setAnswer（睦＃roomconfig_persistentroom，真正的）;
        submitForm.setAnswer（睦＃roomconfig_roomdesc，组名）;
        muc.sendConfigurationForm（submitForm）;
        返回睦;
    }
}
 

I am getting class cast exception while creating muc in android.

E/AndroidRuntime(31002): Caused by: java.lang.ClassCastException:   
org.jivesoftware.smack.packet.DefaultPacketExtension
E/AndroidRuntime(31002):    at  
org.jivesoftware.smackx.muc.MultiUserChat.getMUCUserExtension(MultiUserChat.java:2000)
E/AndroidRuntime(31002):    at    
org.jivesoftware.smackx.muc.MultiUserChat.create(MultiUserChat.java:364)

解决方案

You can create user Group by ,

public boolean createGroup(XMPPConnection connection,String groupName) {
if (connection == null)
return false;
try {
connection.getRoster().createGroup(groupName);
Log.v("Group created : ", groupName);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}

If you wated to create Group Chat in xmpp try the following method. (** UNCHECKED )

public class createMucAT extends AsyncTask<Void, Void, MultiUserChat> {

    private RosterGroup group;
    private Connection conn;
    private String groupId;
    private String groupName;


    public createMucAT(Connection conn, RosterGroup group, String groupId,
            String groupName) {
        this.group = group;
        this.conn = conn;
        this.groupId = groupId;
        this.groupName = groupName;


    }

    @Override
    protected MultiUserChat doInBackground(Void... params) {
        String groupTag = group.getName();
        MultiUserChat chat = null;
        try {
            chat = createGroupChat(conn, groupId, groupTag, conn.getUser());
        } catch (XMPPException e) {
            e.printStackTrace();
        }
        return chat;
    }

    @Override
    protected void onPostExecute(MultiUserChat result) {
        super.onPostExecute(result);
        //handle the result here
    }

    private MultiUserChat createGroupChat(Connection conn, String groupId, String groupName, String nickname) throws XMPPException {
        MultiUserChat muc = new MultiUserChat(conn, groupId + "@" + ConnectionService.CONFERENCE_IP_ADDRESS);
        muc.create(nickname);
        Form form = muc.getConfigurationForm();
        Form submitForm = form.createAnswerForm();
        for (Iterator<FormField> fields = form.getFields(); fields.hasNext();) {
            FormField field = (FormField) fields.next();
            if (!FormField.TYPE_HIDDEN.equals(field.getType()) && field.getVariable() != null) {
                submitForm.setDefaultAnswer(field.getVariable());
                }
        }
        List<String> owners = new ArrayList<String>();
        owners.add(ConnectionService.getConnection().getUser().toString());
        submitForm.setAnswer("muc#roomconfig_roomowners", owners);
        submitForm.setAnswer("muc#roomconfig_persistentroom", true);
        submitForm.setAnswer("muc#roomconfig_roomdesc", groupName);
        muc.sendConfigurationForm(submitForm);
        return muc;
    }
}

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