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im:android:basics:message [2020/07/31 09:21] zhaoliang [导入消息到数据库] |
im:android:basics:message [2020/08/10 04:02] zhaoliang [设置群消息是否需要已读回执(增值服务)] |
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| 行 163: | 行 163: | ||
| | | ||
| </code> | </code> | ||
| + | |||
| + | |||
| + | ==== 设置群消息是否需要已读回执(增值服务) ==== | ||
| + | 当消息为群消息时，消息发送方(目前为管理员和群主)可以设置此消息是否需要已读回执，如需要，则设置EMMessage的方法setIsNeedGroupAck()为YES，之后发送。 | ||
| + | <code> | ||
| + | public EMMessage createDingMessage(String to, String content) { | ||
| + | EMMessage message = EMMessage.createTxtSendMessage(content, to); | ||
| + | message.setIsNeedGroupAck(true); | ||
| + | return message; | ||
| + | } | ||
| + | | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== 发送群消息已读回执 ==== | ||
| + | <code objc> | ||
| + | public void sendAckMessage(EMMessage message) { | ||
| + | if (!validateMessage(message)) { | ||
| + | return; | ||
| + | } | ||
| + | |||
| + | if (message.isAcked()) { | ||
| + | return; | ||
| + | } | ||
| + | |||
| + | // May a user login from multiple devices, so do not need to send the ack msg. | ||
| + | if (EMClient.getInstance().getCurrentUser().equalsIgnoreCase(message.getFrom())) { | ||
| + | return; | ||
| + | } | ||
| + | |||
| + | try { | ||
| + | if (message.isNeedGroupAck() && !message.isUnread()) { | ||
| + | String to = message.conversationId(); // do not user getFrom() here | ||
| + | String msgId = message.getMsgId(); | ||
| + | EMClient.getInstance().chatManager().ackGroupMessageRead(to, msgId, ((EMTextMessageBody)message.getBody()).getMessage()); | ||
| + | message.setUnread(false); | ||
| + | EMLog.i(TAG, "Send the group ack cmd-type message."); | ||
| + | } | ||
| + | } catch (Exception e) { | ||
| + | EMLog.d(TAG, e.getMessage()); | ||
| + | } | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | 当发送群已读回执后，消息发送方对应EMMessage的groupAckCount属性会有相应变化； | ||
| + | |||
| + | |||
| + | ==== 群消息已读回调 ==== | ||
| + | |||
| + | <code> | ||
| + | /** | ||
| + | * \~chinese | ||
| + | * 接受到群组消息体的已读回执, 消息的接收方已经阅读此消息。 | ||
| + | * | ||
| + | * \~english | ||
| + | * received message read ack by recipient as message had been read | ||
| + | * | ||
| + | */ | ||
| + | void onGroupMessageRead(List<EMGroupReadAck> groupReadAcks) { | ||
| + | } | ||
| + | |||
| + | </code> | ||
| + | |||
| + | |||
| ==== 发送扩展消息 ==== | ==== 发送扩展消息 ==== | ||