tencent cloud

String conversationID = "conversationID";
V2TIMManager.getConversationManager().getConversation(conversationID, new V2TIMValueCallback<V2TIMConversation>() {
   @Override
   public void onSuccess(V2TIMConversation v2TIMConversation) {
       Log.i("imsdk", "success");
   }
    @Override
   public void onError(int code, String desc) {
       Log.i("imsdk", "failure, code:" + code + ", desc:" + desc);
   }
});

[V2TIMManager.sharedInstance getConversation:@"conversationID" // 要查询的会话 ID
                                       succ:^(V2TIMConversation *conv) {
   // 获取成功，返回 V2TIMConversation 对象
} fail:^(int code, NSString *desc) {
   // 获取失败
}];

template <class T>
class ValueCallback final : public V2TIMValueCallback<T> {
public:
   using SuccessCallback = std::function<void(const T&)>;
   using ErrorCallback = std::function<void(int, const V2TIMString&)>;
    ValueCallback() = default;
   ~ValueCallback() override = default;
    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
       success_callback_ = std::move(success_callback);
       error_callback_ = std::move(error_callback);
   }
    void OnSuccess(const T& value) override {
       if (success_callback_) {
           success_callback_(value);
       }
   }
   void OnError(int error_code, const V2TIMString& error_message) override {
       if (error_callback_) {
           error_callback_(error_code, error_message);
       }
   }
private:
   SuccessCallback success_callback_;
   ErrorCallback error_callback_;
};
V2TIMString conversationID = u8"conversationID";
auto callback = new ValueCallback<V2TIMConversation>{};
callback->SetCallback(
   [=](const V2TIMConversation& conversation) {
       // 获取单个会话成功
       delete callback;
   },
   [=](int error_code, const V2TIMString& error_message) {
       // 获取单个会话失败
       delete callback;
   });
V2TIMManager::GetInstance()->GetConversationManager()->GetConversation(conversationID, callback);

List<String> conversationIDList = new ArrayList<>();
conversationIDList.add("conversationID1");
conversationIDList.add("conversationID1");
V2TIMManager.getConversationManager().getConversationList(conversationIDList, new V2TIMValueCallback<List<V2TIMConversation>>() {
   @Override
   public void onSuccess(List<V2TIMConversation> conversationList) {
       Log.i("imsdk", "success");
   }
    @Override
   public void onError(int code, String desc) {
       Log.i("imsdk", "failure, code:" + code + ", desc:" + desc);
   }
});

[V2TIMManager.sharedInstance getConversationList:@[@"convID1", @"convID2"] // 要查询的会话 ID 列表
                                           succ:^(NSArray<V2TIMConversation *> *list) {
   // 获取成功，list 中包含 V2TIMConversation 对象
} fail:^(int code, NSString *desc) {
   // 获取失败
}];

template <class T>
class ValueCallback final : public V2TIMValueCallback<T> {
public:
   using SuccessCallback = std::function<void(const T&)>;
   using ErrorCallback = std::function<void(int, const V2TIMString&)>;
    ValueCallback() = default;
   ~ValueCallback() override = default;
    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
       success_callback_ = std::move(success_callback);
       error_callback_ = std::move(error_callback);
   }
    void OnSuccess(const T& value) override {
       if (success_callback_) {
           success_callback_(value);
       }
   }
   void OnError(int error_code, const V2TIMString& error_message) override {
       if (error_callback_) {
           error_callback_(error_code, error_message);
       }
   }
private:
   SuccessCallback success_callback_;
   ErrorCallback error_callback_;
};
V2TIMStringVector conversationIDList;
conversationIDList.PushBack(u8"conversationID1");
conversationIDList.PushBack(u8"conversationID2");
auto callback = new ValueCallback<V2TIMConversationVector>{};
callback->SetCallback(
   [=](const V2TIMConversationVector& conversationList) {
       // 获取多个会话成功
       delete callback;
   },
   [=](int error_code, const V2TIMString& error_message) {
       // 获取多个会话失败
       delete callback;
   });
V2TIMManager::GetInstance()->GetConversationManager()->GetConversationList(conversationIDList, callback);