/** * send @ message, only support group chat message * @param content */ private void sendAtMessage(String content){ if(chatType != EaseConstant.CHATTYPE_GROUP){ EMLog.e(TAG, "only support group chat message"); return; } EMMessage message = EMMessage.createTxtSendMessage(content, toChatUsername); message.setAttribute(EaseConstant.MESSAGE_ATTR_AT_MSG, EaseAtMessageHelper.get().atListToString(EaseAtMessageHelper.get().getAtMessageUsername(content))); sendMessage(message); }