Combine and Forward | Display of Combined Message | Click Combined Message to Download Message List for Display |
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createMergerMessage
API (Android / iOS and macOS / Windows) to create a combined message. The list of original messages as well as the combined message title and digest also need to be set.Attribute | Description | Remarks |
messageList | List of original messages | List of original messages to be combined and forwarded |
title | Title | Title of the combined message, such as "Chat History of xixiyah and Hello" as shown above |
abstractList | Digest list | Digest list of the combined message as shown above. The original message digests need to be displayed for the combined message, which will be unfolded after the user clicks the cell. |
compatibleText | Compatibility text message | If the early SDK version does not support the combined message, the user will receive a text message with the content compatibleText by default. |
// List of messages to be forwarded, which can contain combined messages but not group tipsList<V2TIMMessage> msgs = new ArrayList<>();msgs.add(message1);msgs.add(message2);// Title of the combined messageString title = "Chat History of vinson and lynx";// Digest list of the combined messageList<String> abstactList = new ArrayList<>();msgs.add("abstract1");msgs.add("abstract2");msgs.add("abstract3");// Compatibility text of the combined message. If the early SDK version does not support the combined message, the user will receive a text message with the content `compatibleText` by default.String compatibleText = "Upgrade to the latest version to check the merged message";// Create a combined messageV2TIMMessage mergeMessage = V2TIMManager.getMessageManager().createMergerMessage(msgs, title, abstractList, compatibleText);
// List of messages to be forwarded, which can contain combined messages but not group tipsNSArray *msgs = @[message1,message2...];// Title of the combined messageNSString *title = @"Chat History of vinson and lynx";// Digest list of the combined messageNSArray *abstactList = @[@"abstract1",@"abstract2",@"abstract3"];// Compatibility text of the combined message. If the SDK on an early version does not support the combined message, the user will receive a text message with the content `compatibleText` by default.NSString *compatibleText = @"Upgrade to the latest version to check the merged message";// Create a combined messageV2TIMMessage *mergeMessage = [[V2TIMManager sharedInstance] createMergerMessage:msgs title:titleabstractList:abstactList compatibleText:compatibleText];
// List of messages to be forwarded, which can contain combined messages but not group tipsV2TIMMessageVector messageList;messageList.PushBack(message1);messageList.PushBack(message2);// Title of the combined messageV2TIMString title = "Chat History of vinson and lynx";// Digest list of the combined messageV2TIMStringVector abstractList;abstractList.PushBack("abstract1");abstractList.PushBack("abstract2");abstractList.PushBack("abstract3");// Compatibility text of the combined message. If the early SDK version does not support the combined message,// the user will receive a text message with the content `compatibleText` by default.V2TIMString compatibleText = "Upgrade to the latest version to check the merged message";// Create a combined messageV2TIMMessage mergerMessage = V2TIMManager::GetInstance()->GetMessageManager()->CreateMergerMessage(messageList, title, abstractList, compatibleText);
sendMessage
API (Android / iOS and macOS / Windows) to send the combined message.// Send the combined message to the user `denny`V2TIMManager.getMessageManager().sendMessage(mergeMessage, "denny", null, V2TIMMessage.V2TIM_PRIORITY_NORMAL, false, null, new V2TIMSendCallback<V2TIMMessage>() {@Overridepublic void onProgress(int progress) {}@Overridepublic void onSuccess(V2TIMMessage v2TIMMessage) {}@Overridepublic void onError(int code, String desc) {}})
// Send the combined message to the user `denny`[[V2TIMManager sharedInstance] sendMessage:mergeMessage receiver:@"denny" groupID:nilpriority:V2TIM_PRIORITY_NORMAL onlineUserOnly:NO offlinePushInfo:nil progress:nil succ:nil fail:nil];
class SendCallback final : public V2TIMSendCallback {public:using SuccessCallback = std::function<void(const V2TIMMessage&)>;using ErrorCallback = std::function<void(int, const V2TIMString&)>;using ProgressCallback = std::function<void(uint32_t)>;SendCallback() = default;~SendCallback() override = default;void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback,ProgressCallback progress_callback) {success_callback_ = std::move(success_callback);error_callback_ = std::move(error_callback);progress_callback_ = std::move(progress_callback);}void OnSuccess(const V2TIMMessage& message) override {if (success_callback_) {success_callback_(message);}}void OnError(int error_code, const V2TIMString& error_message) override {if (error_callback_) {error_callback_(error_code, error_message);}}void OnProgress(uint32_t progress) override {if (progress_callback_) {progress_callback_(progress);}}private:SuccessCallback success_callback_;ErrorCallback error_callback_;ProgressCallback progress_callback_;};auto callback = new SendCallback{};callback->SetCallback([=](const V2TIMMessage& message) { delete callback; },[=](int error_code, const V2TIMString& error_message) { delete callback; },[=](uint32_t progress) {});V2TIMManager::GetInstance()->GetMessageManager()->SendMessage(mergerMessage, "denny", {}, V2TIMMessagePriority::V2TIM_PRIORITY_NORMAL, false, {}, callback);
addAdvancedMsgListener
(Android / iOS and macOS / Windows) to add the advanced message listener.
We recommend it be called early, such as after the chat page is initialized, to ensure timely message receiving in the application.V2TIMManager.getMessageManager().addAdvancedMsgListener(advancedMsgListener);
// `self` is id<V2TIMAdvancedMsgListener>[[V2TIMManager sharedInstance] addAdvancedMsgListener:self];
class AdvancedMsgListener final : public V2TIMAdvancedMsgListener {// Members ...};// Note that `advancedMsgListener` should not be released before the IM SDK is uninitialized,// otherwise the message callback cannot be called.AdvancedMsgListener advancedMsgListener;V2TIMManager::GetInstance()->GetMessageManager()->AddAdvancedMsgListener(&advancedMsgListener);
V2TIMMessage
in onRecvNewMessage
.
You can use the combined message element V2TIMMergerElem
(Android / iOS and macOS / Windows) to get the title
and abstractList
for UI display.
Then, when the user clicks the combined message, you can call the downloadMergerMessage
API (Android / iOS and macOS / Windows) to download the combined message list for UI display.@Overridepublic void onRecvNewMessage(V2TIMMessage msg) {if (msg.getElemType() == V2TIMMessage.V2TIM_ELEM_TYPE_MERGER) {// Get the elements of the combined messageV2TIMMergerElem mergerElem = msg.getMergerElem();// Get the `title`String title = mergerElem.getTitle();// Get the digest listList<String> abstractList = mergerElem.getAbstractList();// Download the combined message list when the user clicks the combined messagemergerElem.downloadMergerMessage(new V2TIMValueCallback<List<V2TIMMessage>>() {@Overridepublic void onSuccess(List<V2TIMMessage> v2TIMMessages) {// Downloaded successfully. `v2TIMMessages` is the combined message list.for (V2TIMMessage subMsg : v2TIMMessages) {// If the combined message list still contains a combined message, continue to parse the message.if (subMsg.getElemType() == V2TIMMessage.V2TIM_ELEM_TYPE_MERGER) {V2TIMMergerElem mergerElem = subMsg.getMergerElem();// Get the `title`String title = mergerElem.getTitle();// Get the digest listList<String> abstractList = mergerElem.getAbstractList();// Download the combined message list when the user clicks the combined message......}}}@Overridepublic void onError(int code, String desc) {// Download failed}});}
- (void)onRecvNewMessage:(V2TIMMessage *)msg {if (msg.elemType == V2TIM_ELEM_TYPE_MERGER) {// Get the elements of the combined messageV2TIMMergerElem *mergerElem = msg.mergerElem;// Get the `title`NSString *title = mergerElem.title;// Get the digest listNSArray *abstractList = mergerElem.abstractList;// Download the combined message list when the user clicks the combined message[msg.mergerElem downloadMergerMessage:^(NSArray<V2TIMMessage *> *msgs) {// Downloaded successfully. `msgs` is the combined message list.for (V2TIMMessage *subMsg in msgs) {// If the combined message list still contains a combined message, continue to parse the message.if (subMsg.elemType == V2TIM_ELEM_TYPE_MERGER) {V2TIMMergerElem *mergerElem = subMsg.mergerElem;// Get the `title`NSString *title = mergerElem.title;// Get the digest listNSArray *abstractList = mergerElem.abstractList;// Download the combined message list when the user clicks the combined message[msg.mergerElem downloadMergerMessage:nil fail:nil];}}} fail:^(int code, NSString *desc) {// Download 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_;};class AdvancedMsgListener final : public V2TIMAdvancedMsgListener {public:void OnRecvNewMessage(const V2TIMMessage& message) override {if (message.elemList.Size() == 1) {V2TIMElem* elem = message.elemList[0];if (elem->elemType == V2TIMElemType::V2TIM_ELEM_TYPE_MERGER) {// Get the elements of the combined messageauto mergerElem = static_cast<V2TIMMergerElem*>(elem);// Get the `title`V2TIMString title = mergerElem->title;/// Get the digest listV2TIMStringVector abstractList = mergerElem->abstractList;// Download the combined message list when the user clicks the combined messageauto callback = new ValueCallback<V2TIMMessageVector>{};callback->SetCallback([=](const V2TIMMessageVector& messageList) {// Downloaded successfully. `v2TIMMessages` is the combined message list.for (size_t i = 0; i < messageList.Size(); ++i) {const V2TIMMessage& message = messageList[i];if (message.elemList.Size() == 1) {V2TIMElem* elem = message.elemList[0];// If the combined message list still contains a combined message, continue to parse the message.if (elem->elemType == V2TIMElemType::V2TIM_ELEM_TYPE_MERGER) {// ...}}}delete callback;},[=](int error_code, const V2TIMString& error_message) { delete callback; });mergerElem->DownloadMergerMessage(callback);}}}// Other members ...};// Note that `advancedMsgListener` should not be released before the IM SDK is uninitialized,// otherwise the message callback cannot be called.AdvancedMsgListener advancedMsgListener;V2TIMManager::GetInstance()->GetMessageManager()->AddAdvancedMsgListener(&advancedMsgListener);
removeAdvancedMsgListener
(Android / iOS and macOS / Windows) to remove the advanced message listener.V2TIMManager.getMessageManager().removeAdvancedMsgListener(advancedMsgListener);
// `self` is id<V2TIMAdvancedMsgListener>[[V2TIMManager sharedInstance] removeAdvancedMsgListener:self];
class AdvancedMsgListener final : public V2TIMAdvancedMsgListener {// Members ...};// `advancedMsgListener` is the instance of AdvancedMsgListenerV2TIMManager::GetInstance()->GetMessageManager()->RemoveAdvancedMsgListener(&advancedMsgListener);
createForwardMessage
API (Android / iOS and macOS / Windows) first, and then call the sendMessage
API (Android / iOS and macOS / Windows) to send the message.// Create a message with the same elements as the original messageV2TIMMessage forwardMessage = V2TIMManager.getMessageManager().createForwardMessage(originMsg);// Send the message to the user `denny`V2TIMManager.getMessageManager().sendMessage(forwardMessage, "denny", null, V2TIMMessage.V2TIM_PRIORITY_NORMAL, false, null, new V2TIMSendCallback<V2TIMMessage>() {@Overridepublic void onProgress(int progress) {}@Overridepublic void onSuccess(V2TIMMessage message) {}@Overridepublic void onError(int code, String desc) {}});
// Create a message with the same elements as the original messageV2TIMMessage *forwardMessage = [[V2TIMManager sharedInstance] createForwardMessage:originMsg];// Send the message to the user `denny`[[V2TIMManager sharedInstance] sendMessage:forwardMessage receiver:@"denny" groupID:nilpriority:V2TIM_PRIORITY_NORMAL onlineUserOnly:NO offlinePushInfo:nil progress:nil succ:nil fail:nil];
class SendCallback final : public V2TIMSendCallback {public:using SuccessCallback = std::function<void(const V2TIMMessage&)>;using ErrorCallback = std::function<void(int, const V2TIMString&)>;using ProgressCallback = std::function<void(uint32_t)>;SendCallback() = default;~SendCallback() override = default;void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback,ProgressCallback progress_callback) {success_callback_ = std::move(success_callback);error_callback_ = std::move(error_callback);progress_callback_ = std::move(progress_callback);}void OnSuccess(const V2TIMMessage& message) override {if (success_callback_) {success_callback_(message);}}void OnError(int error_code, const V2TIMString& error_message) override {if (error_callback_) {error_callback_(error_code, error_message);}}void OnProgress(uint32_t progress) override {if (progress_callback_) {progress_callback_(progress);}}private:SuccessCallback success_callback_;ErrorCallback error_callback_;ProgressCallback progress_callback_;};// Create a message with the same elements as the original messageV2TIMMessage forwardMessage = V2TIMManager::GetInstance()->GetMessageManager()->CreateForwardMessage(originMsg);auto callback = new SendCallback{};callback->SetCallback([=](const V2TIMMessage& message) { delete callback; },[=](int error_code, const V2TIMString& error_message) { delete callback; },[=](uint32_t progress) {});// Send the message to the user `denny`V2TIMManager::GetInstance()->GetMessageManager()->SendMessage(forwardMessage, "denny", {}, V2TIMMessagePriority::V2TIM_PRIORITY_NORMAL, false, {}, callback);
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