V2TIMConversation
,然后再把所有的 V2TIMConversation
的 unreadCount
相加起来,展示在 UI 上。
但 SDK 为您提供了直接查询所有会话未读消息总数的接口 getTotalUnreadMessageCount
。当会话的未读总数发生变更时,SDK 还会主动通过回调 onTotalUnreadMessageCountChanged
,将最新的未读总数通知出来。V2TIMManager.getConversationManager().getTotalUnreadMessageCount(new V2TIMValueCallback<Long>() {@Overridepublic void onSuccess(Long aLong) {Log.i("imsdk", "success");}@Overridepublic void onError(int code, String desc) {Log.i("imsdk", "failure, code:" + code + ", desc:" + desc);}});
[[V2TIMManager sharedInstance] getTotalUnreadMessageCount:^(UInt64 totalCount) {// 获取成功,totalCount 为所有会话的未读消息总数// 更新 UI 上的未读数} 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_;};auto callback = new ValueCallback<uint64_t>{};callback->SetCallback([=](const uint64_t& count) {// 获取所有会话的未读总数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 获取所有会话的未读总数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->GetTotalUnreadMessageCount(callback);
addConversationListener
(Android / iOS & Mac / Windows) 添加会话监听器。添加监听器后,只需要调用过一次 getTotalUnreadMessageCount
接口,才能接收到所有会话的未读总数变更通知。V2TIMConversationListener
中的 onTotalUnreadMessageCountChanged
(Android / iOS & Mac / Windows) 中,获取到变更后的未读总数。public void onTotalUnreadMessageCountChanged(long totalUnreadCount) {// 收到所有会话的未读总数变更通知Log.i("imsdk", "onTotalUnreadMessageCountChanged");}
// 添加会话监听器[[V2TIMManager sharedInstance] addConversationListener:self];// 收到所有会话的未读总数变更通知- (void)onTotalUnreadMessageCountChanged:(UInt64)totalUnreadCount {// totalUnreadCount 为未读消息总数}
class ConversationListener final : public V2TIMConversationListener {public:/*** 会话所有会话的未读总数变更通知(5.3.425 及以上版本支持)** @note* - 未读总数会减去设置为免打扰的会话的未读数,即消息接收选项设置为* V2TIM_NOT_RECEIVE_MESSAGE or V2TIM_RECEIVE_NOT_NOTIFY_MESSAGE 的会话。*/void OnTotalUnreadMessageCountChanged(uint64_t totalUnreadCount) override {// 收到所有会话的未读总数变更通知}// 其他成员函数 ...};// 添加会话事件监听器,注意在移除监听器之前需要保持 conversationListener 的生命期,以免接收不到事件回调ConversationListener conversationListener;V2TIMManager::GetInstance()->GetConversationManager()->AddConversationListener(&conversationListener);
getUnreadMessageCountByFilter
,传入不同的过滤器 V2TIMConversationListFilter
,获取指定过滤器下的会话未读消息数。V2TIMConversationListFilter
详解如下:subscribeUnreadMessageCountByFilter
注册监听。当该过滤条件中的会话未读消息总数发生变更时,SDK 还会主动通过回调 onUnreadMessageCountChangedByFilter
,将最新的未读总数通知出来。V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setConversationType(V2TIMConversation.V2TIM_C2C); //拉取单聊会话// filter.setConversationType(V2TIMConversation.V2TIM_GROUP); //拉取群聊会话V2TIMManager.getConversationManager().getUnreadMessageCountByFilter(filter, new V2TIMValueCallback<Long>() {@Overridepublic void onSuccess(Long totalUnreadCount) {tvLog.setText("getUnreadMessageCountByFilter success, totalUnreadCount:" + totalUnreadCount);}@Overridepublic void onError(int code, String desc) {tvLog.setText("getUnreadMessageCountByFilter failed");}});
V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.type = V2TIM_C2C; //拉取单聊会话// filter.type = V2TIM_GROUP; //拉取群聊会话[[V2TIMManager sharedInstance] getUnreadMessageCountByFilter:filter succ:^(UInt64 totalUnreadCount) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter success totalUnreadCount:%llu", totalUnreadCount]];} fail:^(int code, NSString *desc) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter failed"]];}];
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_;};V2TIMConversationListFilter filter;filter.type = V2TIM_C2C; // 拉取单聊会话// filter.type = V2TIM_GROUP; // 拉取群聊会话auto callback = new ValueCallback<uint64_t>{};callback->SetCallback([=](const uint64_t& count) {// 获取部分会话的未读总数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 获取部分会话的未读总数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->GetUnreadMessageCountByFilter(filter, callback);
V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setConversationGroup("conversation_group");V2TIMManager.getConversationManager().getUnreadMessageCountByFilter(filter, new V2TIMValueCallback<Long>() {@Overridepublic void onSuccess(Long totalUnreadCount) {tvLog.setText("getUnreadMessageCountByFilter success, totalUnreadCount:" + totalUnreadCount);}@Overridepublic void onError(int code, String desc) {tvLog.setText("getUnreadMessageCountByFilter failed");}});
V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.conversationGroup = @"conversation_group";[[V2TIMManager sharedInstance] getUnreadMessageCountByFilter:filter succ:^(UInt64 totalUnreadCount) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter success totalUnreadCount:%llu", totalUnreadCount]];} fail:^(int code, NSString *desc) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter failed"]];}];
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_;};V2TIMConversationListFilter filter;filter.conversationGroup = "conversation_group";auto callback = new ValueCallback<uint64_t>{};callback->SetCallback([=](const uint64_t& count) {// 获取部分会话的未读总数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 获取部分会话的未读总数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->GetUnreadMessageCountByFilter(filter, callback);
V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setMarkType(V2TIMConversation.V2TIM_CONVERSATION_MARK_TYPE_STAR);V2TIMManager.getConversationManager().getUnreadMessageCountByFilter(filter, new V2TIMValueCallback<Long>() {@Overridepublic void onSuccess(Long totalUnreadCount) {tvLog.setText("getUnreadMessageCountByFilter success, totalUnreadCount:" + totalUnreadCount);}@Overridepublic void onError(int code, String desc) {tvLog.setText("getUnreadMessageCountByFilter failed");}});
V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.markType = V2TIM_CONVERSATION_MARK_TYPE_STAR;[[V2TIMManager sharedInstance] getUnreadMessageCountByFilter:filter succ:^(UInt64 totalUnreadCount) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter success totalUnreadCount:%llu", totalUnreadCount]];} fail:^(int code, NSString *desc) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter failed"]];}];
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_;};V2TIMConversationListFilter filter;filter.markType = V2TIM_CONVERSATION_MARK_TYPE_STAR;auto callback = new ValueCallback<uint64_t>{};callback->SetCallback([=](const uint64_t& count) {// 获取部分会话的未读总数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 获取部分会话的未读总数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->GetUnreadMessageCountByFilter(filter, callback);
V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setHasUnreadCount(true);V2TIMManager.getConversationManager().getUnreadMessageCountByFilter(filter, new V2TIMValueCallback<Long>() {@Overridepublic void onSuccess(Long totalUnreadCount) {tvLog.setText("getUnreadMessageCountByFilter success, totalUnreadCount:" + totalUnreadCount);}@Overridepublic void onError(int code, String desc) {tvLog.setText("getUnreadMessageCountByFilter failed");}});
V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.hasUnreadCount = YES;[[V2TIMManager sharedInstance] getUnreadMessageCountByFilter:filter succ:^(UInt64 totalUnreadCount) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter success totalUnreadCount:%llu", totalUnreadCount]];} fail:^(int code, NSString *desc) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter failed"]];}];
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_;};V2TIMConversationListFilter filter;filter.hasUnreadCount = true;auto callback = new ValueCallback<uint64_t>{};callback->SetCallback([=](const uint64_t& count) {// 获取部分会话的未读总数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 获取部分会话的未读总数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->GetUnreadMessageCountByFilter(filter, callback);
V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setHasGroupAtInfo(true);V2TIMManager.getConversationManager().getUnreadMessageCountByFilter(filter, new V2TIMValueCallback<Long>() {@Overridepublic void onSuccess(Long totalUnreadCount) {tvLog.setText("getUnreadMessageCountByFilter success, totalUnreadCount:" + totalUnreadCount);}@Overridepublic void onError(int code, String desc) {tvLog.setText("getUnreadMessageCountByFilter failed");}});
V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.hasGroupAtInfo = YES;[[V2TIMManager sharedInstance] getUnreadMessageCountByFilter:filter succ:^(UInt64 totalUnreadCount) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter success totalUnreadCount:%llu", totalUnreadCount]];} fail:^(int code, NSString *desc) {[self appendString:[NSString stringWithFormat:@"getUnreadMessageCountByFilter failed"]];}];
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_;};V2TIMConversationListFilter filter;filter.hasGroupAtInfo = true;auto callback = new ValueCallback<uint64_t>{};callback->SetCallback([=](const uint64_t& count) {// 获取部分会话的未读总数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 获取部分会话的未读总数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->GetUnreadMessageCountByFilter(filter, callback);
subscribeUnreadMessageCountByFilter
时传入的 filter,会在 onUnreadMessageCountChangedByFilter
通知中返回。该 filter 携带了 conversationType
、conversationGroup
和 markType
三个字段,您可以通过判断这三字段区分出不同的过滤条件。// 添加会话监听器V2TIMManager.getConversationManager().addConversationListener(conversationListener);// 注册监听指定过滤条件下的未读消息总数变更V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setConversationType(V2TIMConversation.V2TIM_GROUP);filter.setConversationGroup("conversation_group");filter.setMarkType(V2TIMConversation.V2TIM_CONVERSATION_MARK_TYPE_STAR);V2TIMManager.getConversationManager().subscribeUnreadMessageCountByFilter(filter);// 指定过滤条件下的未读消息总数变更通知public void onUnreadMessageCountChangedByFilter(V2TIMConversationListFilter filter, long totalUnreadCount) {// filter 是过滤条件,totalUnreadCount 是未读消息总数Log.i(TAG, "onUnreadMessageCountChangedByFilter:" + totalUnreadCount + "\\n");}
// 添加会话监听器[[V2TIMManager sharedInstance] addConversationListener:self];// 注册监听指定过滤条件下的未读消息总数变更V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.type = V2TIM_GROUP;filter.conversationGroup = @"conversation_group";filter.markType = V2TIM_CONVERSATION_MARK_TYPE_STAR;[[V2TIMManager sharedInstance] subscribeUnreadMessageCountByFilter:filter];// 指定过滤条件下的未读消息总数变更通知- (void)onUnreadMessageCountChangedByFilter:(V2TIMConversationListFilter *)filter totalUnreadCount:(UInt64)totalUnreadCount {// filter 是过滤条件,totalUnreadCount 是未读消息总数}
class ConversationListener final : public V2TIMConversationListener {public:// 指定过滤条件下的未读消息总数变更通知void OnUnreadMessageCountChangedByFilter(const V2TIMConversationListFilter &filter, uint64_t totalUnreadCount) override {// filter 是过滤条件,totalUnreadCount 是未读消息总数}// 其他成员函数 ...};// 添加会话事件监听器,注意在移除监听器之前需要保持 conversationListener 的生命期,以免接收不到事件回调ConversationListener conversationListener;V2TIMManager::GetInstance()->GetConversationManager()->AddConversationListener(&conversationListener);// 注册监听指定过滤条件下的未读消息总数变更V2TIMConversationListFilter filter;filter.type = V2TIM_GROUP;filter.conversationGroup = "conversation_group";filter.markType = V2TIM_CONVERSATION_MARK_TYPE_STAR;V2TIMManager::GetInstance()->GetConversationManager()->SubscribeUnreadMessageCountByFilter(filter);
// 取消监听指定过滤条件下的未读消息总数变更V2TIMConversationListFilter filter = new V2TIMConversationListFilter();filter.setConversationType(V2TIMConversation.V2TIM_GROUP);filter.setConversationGroup("conversation_group");filter.setMarkType(V2TIMConversation.V2TIM_CONVERSATION_MARK_TYPE_STAR);V2TIMManager.getConversationManager().unsubscribeUnreadMessageCountByFilter(filter);
// 取消监听指定过滤条件下的未读消息总数变更V2TIMConversationListFilter *filter = [[V2TIMConversationListFilter alloc] init];filter.type = V2TIM_GROUP;filter.conversationGroup = @"conversation_group";filter.markType = V2TIM_CONVERSATION_MARK_TYPE_STAR;[[V2TIMManager sharedInstance] unsubscribeUnreadMessageCountByFilter:filter];
// 取消监听指定过滤条件下的未读消息总数变更V2TIMConversationListFilter filter;filter.type = V2TIM_GROUP;filter.conversationGroup = "conversation_group";filter.markType = V2TIM_CONVERSATION_MARK_TYPE_STAR;V2TIMManager::GetInstance()->GetConversationManager()->UnsubscribeUnreadMessageCountByFilter(filter);
cleanConversationUnreadMessageCount
(Android / iOS & Mac / Windows)来清理指定会话未读消息数,通过传入特定格式的参数区分不同种类的会话,具体的操作步骤如下文所示。String conversationID = "c2c_userID";V2TIMManager.getConversationManager().cleanConversationUnreadMessageCount(conversationID, 123456, 0, new V2TIMCallback() {@Overridepublic void onSuccess() {Log.i("imsdk", "success");}@Overridepublic void onError(int code, String desc) {Log.i("imsdk", "failure, code:" + code + ", desc:" + desc);}});
[[V2TIMManager sharedInstance] cleanConversationUnreadMessageCount:@"c2c_userID"cleanTimestamp:123456cleanSequence:0succ:^{// 清理指定单聊会话未读数成功} fail:^(int code, NSString *msg) {// 清理指定单聊会话未读数失败}];
class Callback final : public V2TIMCallback {public:using SuccessCallback = std::function<void()>;using ErrorCallback = std::function<void(int, const V2TIMString&)>;Callback() = default;~Callback() override = default;void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {success_callback_ = std::move(success_callback);error_callback_ = std::move(error_callback);}void OnSuccess() override {if (success_callback_) {success_callback_();}}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"c2c_userID";auto callback = new Callback;callback->SetCallback([=]() {// 清理指定单聊会话未读数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 清理指定单聊会话未读数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->CleanConversationUnreadMessageCount(conversationID, 123456, 0, callback);
cleanConversationUnreadMessageCount
成功后,如果调用者事先调用 addConversationListener
添加了会话监听器,会收到 onConversationChanged
回调,该回调中携带了对应会话的最新未读消息数,可以在此回调中更新 UI。public void onConversationChanged(List<V2TIMConversation> conversationList) {// 调用者收到会话信息变更通知Log.i("imsdk", "onConversationChanged");}
// 添加会话监听器[[V2TIMManager sharedInstance] addConversationListener:self];// 调用者收到会话信息变更通知- (void)onConversationChanged:(NSArray<V2TIMConversation*> *)conversationList {// 根据 conversationList 中的 V2TIMConversation 更新对应 UI}
class ConversationListener final : public V2TIMConversationListener {public:/*** 某些会话的关键信息发生变化(未读计数发生变化、最后一条消息被更新等等),可以根据会话的* lastMessage -> timestamp 重新对会话列表做排序** @param conversationList 会话列表*/void OnConversationChanged(const V2TIMConversationVector& conversationList) override {}// 其他成员 ...};// 添加会话事件监听器,注意在移除监听器之前需要保持 conversationListener 的生命期,以免接收不到事件回调ConversationListener conversationListener;V2TIMManager::GetInstance()->GetConversationManager()->AddConversationListener(&conversationListener);
String conversationID = "c2c";V2TIMManager.getConversationManager().cleanConversationUnreadMessageCount(conversationID, 0, 0, new V2TIMCallback() {@Overridepublic void onSuccess() {Log.i("imsdk", "success");}@Overridepublic void onError(int code, String desc) {Log.i("imsdk", "failure, code:" + code + ", desc:" + desc);}});
[[V2TIMManager sharedInstance] cleanConversationUnreadMessageCount:@"c2c"cleanTimestamp:0cleanSequence:0succ:^{// 清空所有单聊会话未读消息数成功} fail:^(int code, NSString *msg) {// 清空所有单聊会话未读消息数失败}];
class Callback final : public V2TIMCallback {public:using SuccessCallback = std::function<void()>;using ErrorCallback = std::function<void(int, const V2TIMString&)>;Callback() = default;~Callback() override = default;void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {success_callback_ = std::move(success_callback);error_callback_ = std::move(error_callback);}void OnSuccess() override {if (success_callback_) {success_callback_();}}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"c2c";auto callback = new Callback;callback->SetCallback([=]() {// 清空所有单聊会话未读消息数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 清空所有单聊会话未读消息数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->CleanConversationUnreadMessageCount(conversationID, 0, 0, callback);
cleanConversationUnreadMessageCount
成功后,如果调用者事先调用 addConversationListener
添加了会话监听器,会收到 onConversationChanged
回调,该回调中携带了对应会话的最新未读消息数,可以在此回调中更新 UI。public void onConversationChanged(List<V2TIMConversation> conversationList) {// 调用者收到会话信息变更通知Log.i("imsdk", "onConversationChanged");}
// 添加会话监听器[[V2TIMManager sharedInstance] addConversationListener:self];// 调用者收到会话信息变更通知- (void)onConversationChanged:(NSArray<V2TIMConversation*> *)conversationList {// 根据 conversationList 中的 V2TIMConversation 更新对应 UI,例如清除掉单聊会话 cell 小红点}
class ConversationListener final : public V2TIMConversationListener {public:/*** 某些会话的关键信息发生变化(未读计数发生变化、最后一条消息被更新等等),可以根据会话的* lastMessage -> timestamp 重新对会话列表做排序** @param conversationList 会话列表*/void OnConversationChanged(const V2TIMConversationVector& conversationList) override {}// 其他成员 ...};// 添加会话事件监听器,注意在移除监听器之前需要保持 conversationListener 的生命期,以免接收不到事件回调ConversationListener conversationListener;V2TIMManager::GetInstance()->GetConversationManager()->AddConversationListener(&conversationListener);
String conversationID = "group_groupID";V2TIMManager.getConversationManager().cleanConversationUnreadMessageCount(conversationID, 0, 123, new V2TIMCallback() {@Overridepublic void onSuccess() {Log.i("imsdk", "success");}@Overridepublic void onError(int code, String desc) {Log.i("imsdk", "failure, code:" + code + ", desc:" + desc);}});
[[V2TIMManager sharedInstance] cleanConversationUnreadMessageCount:@"group_groupID"cleanTimestamp:0cleanSequence:123succ:^{// 清理指定群聊会话未读消息数成功} fail:^(int code, NSString *msg) {// 清理指定群聊会话未读消息数失败}];
class Callback final : public V2TIMCallback {public:using SuccessCallback = std::function<void()>;using ErrorCallback = std::function<void(int, const V2TIMString&)>;Callback() = default;~Callback() override = default;void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {success_callback_ = std::move(success_callback);error_callback_ = std::move(error_callback);}void OnSuccess() override {if (success_callback_) {success_callback_();}}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"group_groupID";auto callback = new Callback;callback->SetCallback([=]() {// 清理指定群聊会话未读消息数成功delete callback;},[=](int error_code, const V2TIMString& error_message) {// 清理指定群聊会话未读消息数失败delete callback;});V2TIMManager::GetInstance()->GetConversationManager()->CleanConversationUnreadMessageCount(conversationID, 0, 123, callback);
cleanConversationUnreadMessageCount
调用成功后,如果调用者事先调用 addConversationListener
添加了会话监听器,会收到 onConversationChanged
回调,该回调中携带了对应会话的最新未读消息数,可以在此回调中更新 UI。public void onConversationChanged(List<V2TIMConversation> conversationList) {// 调用者收到会话信息变更通知Log.i("imsdk", "onConversationChanged");}
// 添加会话监听器[[V2TIMManager sharedInstance] addConversationListener:self];// 调用者收到会话信息变更通知- (void)onConversationChanged:(NSArray<V2TIMConversation*> *)conversationList {// 根据 conversationList 中的 V2TIMConversation 更新对应 UI}
class ConversationListener final : public V2TIMConversationListener {public:void OnConversationChanged(const V2TIMConversationVector& conversationList) override {}// 调用者收到会话信息变更通知};// 添加会话事件监听器,注意在移除监听器之前需要保持 conversationListener 的生命期,以免接收不到事件回调ConversationListener conversationListener;V2TIMManager::GetInstance()->GetConversationManager()->AddConversationListener(&conversationListener);```### 清空所有群聊会话的未读数<