集成融雲Android SDK實現在羣聊/討論組中@人的功能（二）

接着上面寫

2.寫了單獨service來處理@相關數據

public class AtUserService {
    private static AtUserService instance;
    private static final String AT_GTOUP_IDS="at_group_ids";
    public static AtUserService getInstance() {
        if (instance == null) {
            instance = new AtUserService();
        }
        return instance;
    }

    //發送時@人的列表
    public List<TempUser> atUsers =new ArrayList<>();

    public void addUser(User user){
        TempUser tempUser=new TempUser();
        tempUser.uid=user.id.toString();
        tempUser.name=user.name;
        atUsers.add(tempUser);
    }
    public List<String> getUserIds(String text){
        if(atUsers==null||atUsers.size()==0){
            return null;
        }
        ArrayList<String> ids=new ArrayList();
        for(int i=0;i<atUsers.size();i++){
            if(text.contains(atUsers.get(i).name)){
                ids.add(atUsers.get(i).uid);
            }
        }
        return ids;
    }

    //接受 ：誰@了我的列表
    private Set<String> atGroupIds =new HashSet<>();

    public Set<String> getAtGroupIds(){
        if(atGroupIds==null||atGroupIds.size()==0){
            String string=UserConfigUtil.getStringConfig(AT_GTOUP_IDS,"");
            if(string!=null&&!string.equals("")){
                atGroupIds=GSONUtil.getGsonInstence().fromJson(string,new TypeToken<Set<String>>(){}.getType());
            }
        }
        return atGroupIds;
    }
    public void addAtGroupId(String id){
        atGroupIds.add(id);
        UserConfigUtil.setConfig(AT_GTOUP_IDS,GSONUtil.getGsonInstence().toJson(atGroupIds),true);
    }
    public void removeAtGroupId(String id){
        atGroupIds.remove(id);
        UserConfigUtil.setConfig(AT_GTOUP_IDS,GSONUtil.getGsonInstence().toJson(atGroupIds),true);
    }
    public Set<String> curConversationId=new HashSet<>();

    public void addCurConversationId(String id){
        curConversationId.add(id);
    }
    public void removeCurConversationId(String id){
        curConversationId.remove(id);
    }
    public class TempUser{
        String uid;
        String name;
    }
}

3.RongService 裏處理和融雲相關的操作

• 發送消息

private void setSendMessageListener() {
        if (RongIM.getInstance() != null) {
            //設置自己發出的消息監聽器。
            RongIM.getInstance().setSendMessageListener(new RongIM.OnSendMessageListener() {
                /**
                 * 消息發送前監聽器處理接口（是否發送成功可以從SentStatus屬性獲取）。
                 *
                 * @param message 發送的消息實例。
                 * @return 處理後的消息實例。
                 */
                @Override
                public Message onSend(Message message) {
                    MessageContent msgContent = message.getContent();
                   if(message.getConversationType().equals(Conversation.ConversationType.GROUP)&&msgContent.toString().contains("@")){
                            AtMsgBody msgBody=new AtMsgBody();
                            msgBody.groupId = message.getTargetId();
                            msgBody.senderName = AccountService.getInstance().me.name;

                            if(AtUserService.getInstance().getUserIds(((TextMessage) msgContent).getContent().toString())!=null){
                                List<String> ids=AtUserService.getInstance().getUserIds(((TextMessage) msgContent).getContent().toString());
                                String uids="";
                                for(String str:ids){
                                    uids+=str+",";
extraJson.addProperty("uids",uids.equals("")?"":uids.substring(0,uids.length()-1));
                                uids=uids.equals("")?"":uids.substring(0,uids.length()-1);
                                AtUserService.getInstance().atUsers.clear();
                            }
                        }
                        ((TextMessage) msgContent).setExtra(extraJson.toString());
                    } 
                    return message;
                }

• 接收到消息

RongIM.setOnReceiveMessageListener(new RongIMClient.OnReceiveMessageListener() {
            @Override
            public boolean onReceived(Message message, int i) {
            if(message.getConversationType().equals(Conversation.ConversationType.GROUP)&&message.getContent() instanceof TextMessage){
                    if(!AtUserService.getInstance().curConversationId.contains(message.getTargetId().toString())){
                        JsonObject jsonObject= GSONUtil.getGsonParser().parse(((TextMessage) message.getContent()).getExtra()).getAsJsonObject();
                        if(!jsonObject.isJsonNull()&& jsonObject.has("uids")&&!jsonObject.get("uids").isJsonNull()){
                            String strUids=jsonObject.get("uids").getAsString();
                            if(strUids.contains(AccountService.getInstance().me.id.toString())){
                                AtUserService.getInstance().addAtGroupId(message.getTargetId().toString());
                            }
                        }
                    }
                }
            }

• 消息點擊後取消@顯示

RongIM.setConversationListBehaviorListener(new RongIM.ConversationListBehaviorListener() {
@Override
            public boolean onConversationClick(Context context, View view, final UIConversation uiConversation) {
if(uiConversation.getConversationType().equals(Conversation.ConversationType.GROUP)
                        &&AtUserService.getInstance().getAtGroupIds().contains(uiConversation.getConversationTargetId())){
                    AtUserService.getInstance().removeAtGroupId(uiConversation.getConversationTargetId());
          }
     }
}