AlexPrestonSB

dependencies {

    implementation 'com.sendbird.sdk:sendbird-android-sdk:3.0.141'
    
     ...
     
}

AlexPrestonSB

//Sender Side
// To listen to an update from all the other channel members' client apps, implement the 'onReadReceiptUpdated()' with things to do when notified.
SendBird.addChannelHandler(UNIQUE_HANDLER_ID, new SendBird.ChannelHandler() {
    @Override
    public void onReadReceiptUpdated(GroupChannel groupChannel) {
        if (currentGroupChannel.getUrl().equals(groupChannel.getUrl())) {
            // For example, code for redrawing a channel view.
        }
    }
});

AlexPrestonSB

//Receiver Side
// Call the 'markAsRead()' when the current user views unread messages in a group channel.
groupChannel.markAsRead();
...

AlexPrestonSB

//Receiver Side
// Call the 'markAsRead()' when the current user views unread messages in a group channel.
groupChannel.markAsRead();
...

AlexPrestonSB

//Sender’s side
SendBird.addChannelHandler(UNIQUE_HANDLER_ID, new SendBird.ChannelHandler() {
    @Override
    public void onMessageReceived(BaseChannel baseChannel, BaseMessage baseMessage) {
    }

    @Override
    public void onDeliveryReceiptUpdated(GroupChannel channel) {
        ... 

AlexPrestonSB

//Receiver Side
public class FirebaseMessagingServiceEx extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        try {
            JSONObject sendBird = new JSONObject(remoteMessage.getData().get("sendbird"));
            JSONObject channel = (JSONObject) sendBird.get("channel");
            String channelUrl = (String) channel.get("channel_url");

            //Mark the Message as Delivered

AlexPrestonSB

SendBirdSyncManager.Options options = new SendBirdSyncManager.Options.Builder()
       .setMessageResendPolicy(SendBirdSyncManager.MessageResendPolicy.AUTOMATIC)
       .setAutomaticMessageResendRetryCount(5)
       .build();
SendBirdSyncManager.setup(context, userId, options, handler);

AlexPrestonSB

@Override
protected void onResume() {
    super.onResume();

    SendBird.addConnectionHandler(YOUR_CONNECTION_HANDLER_ID, new SendBird.ConnectionHandler() {
        @Override
        public void onReconnectStarted() {
            SendBirdSyncManager.getInstance().pauseSync();
        }

AlexPrestonSB

@Override
public void onFailedMessageEvent(MessageCollection collection, final List<BaseMessage> messages, final MessageEventAction action, final FailedMessageEventActionReason reason) {

   if (getActivity() == null) {
       return;
   }
}

AlexPrestonSB

//Sender Side
groupChannel.startTyping(); //Sender Side
groupChannel.endTyping();
...
//Receiver side
// To listen to an update from all the other channel members' client apps, implement the 'onTypingStatusUpdated()' with things to do when notified.
SendBird.addChannelHandler(UNIQUE_HANDLER_ID, new SendBird.ChannelHandler() {
    @Override
    public void onTypingStatusUpdated(GroupChannel groupChannel) {
        if (currentGroupChannel.getUrl().equals(groupChannel.getUrl())) {