用asmack,服务器是tigase ,创建房间，加入聊天室，聊天等的基本功能

1.

/**
* 创建房间
*
* @param roomName 房间名称
*/
public MultiUserChat createRoom(String roomName, String password) {
MultiUserChat muc = null;
try {
if (getConnection() == null)
return null;
// TODO 完成建群操作
// 创建一个 MultiUserChat对象  这里的"@muc."可以自己写
muc = new MultiUserChat(getConnection(), getFullRoomname(roomName));
muc.create(roomName);
// 获得聊天室的配置表单
Form form = muc.getConfigurationForm();
// 根据原始表单创建一个要提交的新表单。
Form submitForm = form.createAnswerForm();
// 向要提交的表单添加默认答复
for (Iterator<FormField> fields = form.getFields(); fields.hasNext(); ) {
FormField field = (FormField) fields.next();
if (!FormField.TYPE_HIDDEN.equals(field.getType()) && field.getVariable() != null) {
// 设置默认值作为答复
submitForm.setDefaultAnswer(field.getVariable());
}
}
submitForm.setAnswer("muc#roomconfig_moderatedroom", false);
// 设置聊天室是持久聊天室，即将要被保存下来
submitForm.setAnswer("muc#roomconfig_persistentroom", true);
// 房间仅对成员开放
submitForm.setAnswer("muc#roomconfig_membersonly", false);
if (password == null || password.length() == 0) {
// 不需要密码能进入的房间
submitForm.setAnswer("muc#roomconfig_passwordprotectedroom", false);
} else {
// 需要密码才能进入的房间
submitForm.setAnswer("muc#roomconfig_passwordprotectedroom", true);
// 设置房间密码
submitForm.setAnswer("muc#roomconfig_roomsecret", password);
}
//            // 允许使用者修改昵称
submitForm.setAnswer("x-muc#roomconfig_canchangenick", true);
// 登录房间对话
submitForm.setAnswer("muc#roomconfig_enablelogging", true);
muc.sendConfigurationForm(submitForm);
} catch (XMPPException e) {
Log.e("you wenti", "网络不给力,请重试" + e.getMessage());
e.printStackTrace();
return null;
}

return muc;
}

2.  /**
* 加入有密码的会议室
*
* @param user      昵称
* @param roomsName 会议室名
*/
public int joinPassMultiUserChat(String user, String password, String roomsName) {
try {
if (getConnection() == null)
return 0;
// 使用XMPPConnection创建一个MultiUserChat窗口
if (mulChat != null) {
mulChat.leave();
mulChat = null;
}

mulChat = new MultiUserChat(getConnection(), roomsName + "@muc." + getConnection().getServiceName());
// 聊天室服务将会决定要接受的历史记录数量
DiscussionHistory history = new DiscussionHistory();
history.setMaxChars(0);
history.setSeconds(300);
//            history.setSince(new Date());

// 用户加入聊天室
mulChat.join(user, password, history, SmackConfiguration.getPacketReplyTimeout());
//            mulChat.changeNickname(user);//修改昵称
Log.e("muc", "会议室【" + roomsName + "】加入成功........");
return 1;

} catch (Exception e) {
e.printStackTrace();
//            if(Constants.IS_DEBUG)
Log.e("muc", "会议室【" + roomsName + "】加入失败........");
return 2;

} finally {
}
}

3.* 查询会议室成员名字

* @param muc */

public static List<String> findMulitUser(MultiUserChat muc){

List<String> listUser = new ArrayList<String>();

Iterator<String> it = muc.getOccupants();

//遍历出聊天室人员名称

while (it.hasNext()) {

// 聊天室成员名字

String name = StringUtils.parseResource(it.next());

listUser.add(name);

}

return listUser;}

/**
* TODO 发送消息
*
* @param msg      消息内容
* @param chatType 消息类型(聊天,还是群聊)
*/
@SuppressLint("NewApi")
public void sendMsg(String msg, int chatType) throws Exception {
if (getConnection() == null) {
throw new Exception("XmppException");
}
if (msg.isEmpty()) {
Toast.makeText(context, "信息不能为空", Toast.LENGTH_SHORT).show();
} else {
//判断是  组聊  还是单聊
if (chatType == 2) {
//发送群聊信息，这里的mulChat,就是你加入房间时的muc

mulChat.sendMessage(msg);
} else if (chatType == 1) {
//                newchat.sendMessage(msg);
}
}
}

//根据roomJID获取聊天室成员数量 
,这里的mulChat,就是你加入房间时的muc

public int  getRoomOccupantsCount() {
int occupantsCount=   mulChat.getOccupantsCount();
return occupantsCount;

}

//根据roomJID获取聊天室信息 这里的mulChat,就是你加入房间时的muc

public RoomInfo getRoomInfo(String roomname) {
RoomInfo roomInfo = null;
try {
roomInfo = MultiUserChat.getRoomInfo(getConnection(), getFullRoomname(roomname));
} catch (XMPPException e) {
e.printStackTrace();
}
//        System.out.println(roomInfo.getRoom() + "-" + roomInfo.getSubject() + "-" + roomInfo.getOccupantsCount());
return roomInfo;
}