The message manager is responsible for CRUD operations on messages, new message listening, refresh message listening, message storage, send message receipt listening, monitoring sync of specific chat data, etc.
Sending Messages
Basic Send Method
/**
* Send message
* @param textContent Message content
* @param channelID Target channel ID
* @param channelType Target channel type (personal channel, group channel, customer service channel, etc.)
*/
WKIM.getInstance().getMsgManager().sendMessage(textContent, channelID, channelType);
Built-in channel types in SDK can be viewed through WKChannelType
Text Messages
// Define text message
WKTextContent textContent = new WKTextContent("Hello, WuKong");
// Send message
WKIM.getInstance().getMsgManager().send(textContent, channel);
Image Messages
// Define image message
WKImageContent imageContent = new WKImageContent(localPath);
// Send message
WKIM.getInstance().getMsgManager().send(imageContent, channel);
When building image message content, there’s no need to pass image width and height. The SDK will automatically get the image dimensions.
Complete Send Example
public class ChatActivity extends AppCompatActivity {
private String channelID;
private byte channelType;
// Send text message
private void sendTextMessage(String content) {
WKTextContent textContent = new WKTextContent(content);
WKIM.getInstance().getMsgManager().send(textContent, channelID, channelType);
}
// Send image message
private void sendImageMessage(String imagePath) {
WKImageContent imageContent = new WKImageContent(imagePath);
WKIM.getInstance().getMsgManager().send(imageContent, channelID, channelType);
}
// Send voice message
private void sendVoiceMessage(String voicePath, int duration) {
WKVoiceContent voiceContent = new WKVoiceContent(voicePath, duration);
WKIM.getInstance().getMsgManager().send(voiceContent, channelID, channelType);
}
// Send location message
private void sendLocationMessage(double latitude, double longitude, String address) {
WKLocationContent locationContent = new WKLocationContent(latitude, longitude, address);
WKIM.getInstance().getMsgManager().send(locationContent, channelID, channelType);
}
}
Custom Messages
See custom messages: Custom Messages
Message Storage Listening
When sending messages, the SDK will trigger a storage callback after saving the message to the local database. At this point, the message has not been sent yet, and you can display the message in the UI in this listener.
WKIM.getInstance().getMsgManager().addOnSendMsgCallback("key", new ISendMsgCallBackListener() {
@Override
public void onInsertMsg(WKMsg wkMsg) {
// You can display the message `wkMsg` saved in the database on the UI here
runOnUiThread(() -> {
addMessageToUI(wkMsg);
});
}
});
For explanation about whether to pass a unique key for events, see Event Listening New Message Listening
// Add listener
WKIM.getInstance().getMsgManager().addOnNewMsgListener("key", new INewMsgListener() {
@Override
public void newMsg(List<WKMsg> list) {
// list: received messages
runOnUiThread(() -> {
handleNewMessages(list);
});
}
});
// Remove listener when exiting page
WKIM.getInstance().getMsgManager().removeNewMsgListener("key");
If you receive new messages in a chat page, you need to determine whether the message belongs to the current conversation by checking the channelID and channelType of the message object WKMsg
New Message Handling Example
public class ChatActivity extends AppCompatActivity {
private List<WKMsg> messageList = new ArrayList<>();
private MessageAdapter messageAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add new message listener
WKIM.getInstance().getMsgManager().addOnNewMsgListener("ChatActivity", new INewMsgListener() {
@Override
public void newMsg(List<WKMsg> list) {
handleNewMessages(list);
}
});
}
private void handleNewMessages(List<WKMsg> newMessages) {
for (WKMsg msg : newMessages) {
// Check if message belongs to current conversation
if (msg.channelID.equals(this.channelID) && msg.channelType == this.channelType) {
runOnUiThread(() -> {
messageList.add(msg);
messageAdapter.notifyItemInserted(messageList.size() - 1);
// Scroll to latest message
recyclerView.scrollToPosition(messageList.size() - 1);
// Mark message as read
markMessageAsRead(msg);
});
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
// Remove listener
WKIM.getInstance().getMsgManager().removeNewMsgListener("ChatActivity");
}
}
Message Refresh Listening
When the SDK updates messages, such as: message send status, someone likes a message, message read receipt, message recall, message editing, etc., the SDK will callback the following event. The UI can determine which specific message has changed through the clientMsgNO of the message object WKMsg.
// Add refresh listener
WKIM.getInstance().getMsgManager().addOnRefreshMsgListener("key", new IRefreshMsg() {
@Override
public void onRefresh(WKMsg wkMsg, boolean isEnd) {
// wkMsg: refreshed message object
// isEnd: to avoid frequent UI refreshes causing lag, refresh UI only when isEnd is true
if (isEnd) {
runOnUiThread(() -> {
refreshMessageInUI(wkMsg);
});
}
}
});
// Remove refresh listener when exiting page
WKIM.getInstance().getMsgManager().removeRefreshMsgListener("key");
Message Refresh Handling Example
private void refreshMessageInUI(WKMsg updatedMsg) {
// Find corresponding message by clientMsgNO and update
for (int i = 0; i < messageList.size(); i++) {
WKMsg msg = messageList.get(i);
if (msg.clientMsgNO.equals(updatedMsg.clientMsgNO)) {
messageList.set(i, updatedMsg);
messageAdapter.notifyItemChanged(i);
break;
}
}
}
View History Messages
/**
* Query or sync messages for a channel
*
* @param channelId Channel ID
* @param channelType Channel type
* @param oldestOrderSeq Last message's large orderSeq, pass 0 for first entry into chat
* @param contain Whether to include the oldestOrderSeq message
* @param dropDown Whether it's a dropdown
* @param aroundMsgOrderSeq Query messages around this message, e.g. aroundMsgOrderSeq=20 returns [16,17,19,20,21,22,23,24,25]
* @param limit Number to get each time
* @param iGetOrSyncHistoryMsgBack Request callback
*/
WKIM.getInstance().getMsgManager().getOrSyncHistoryMessages(
channelId,
channelType,
oldestOrderSeq,
contain,
dropDown,
limit,
aroundMsgOrderSeq,
new IGetOrSyncHistoryMsgBack() {
@Override
public void onSyncing() {
// Syncing - show loading as needed
}
@Override
public void onResult(List<WKMsg> list) {
// Display messages
}
}
);
Getting history messages is not a synchronous method, as there may be non-continuous data that needs to be synced from the server
Next Steps
