Tio-Android如何发送一个消息包

这里以群聊为例，首先看下效果图：

19:56:54 发送一条群聊请求

19:56:54 收到一条群聊通知

1、定义“群聊请求命令码”（向服务端同学索取）

public enum MyCommand {
    /**
     * 群聊请求
     */
    GROUP_CHAT_REQ((short) 10),

    public static MyCommand from(Short value) {
        MyCommand[] values = MyCommand.values();
        for (MyCommand v : values) {
            if (v.value.equals(value)) {
                return v;
            }
        }
        return null;
    }

    Short value;

    private MyCommand(Short value) {
        this.value = value;
    }

    public Short getValue() {
        return value;
    }

    public void setValue(Short value) {
        this.value = value;
    }
}

2、定义“群聊请求消息体”（向服务端同学索取）

群聊请求消息体结构：

public class GroupChatReq {
    public GroupChatReq(String c, Integer[] at, String g) {
        this.c = c;
        this.at = at;
        this.g = g;
    }

    /**
     * 聊天内容
     */
    private String c;
    /**
     * 艾特哪些用户。此值可为null。
     * 举例：[434343, 9898989]
     */
    private Integer[] at;
    /**
     * groupid
     * 举例：45454
     */
    private String g;

    public String getC() {
        return c;
    }

    public void setC(String c) {
        this.c = c;
    }

    public Integer[] getAt() {
        return at;
    }

    public void setAt(Integer[] at) {
        this.at = at;
    }

    public String getG() {
        return g;
    }

    public void setG(String g) {
        this.g = g;
    }
}

3、组装“群聊请求消息包”

public class MyPacketHolder {
    /**
     * 组装一个群聊请求消息包
     *
     * @param content 内容
     * @param at      艾特哪些用户。此值可为null。举例：[434343, 9898989]
     * @param groupId 群组id
     * @return 群聊请求消息包
     */
    public static TioPacket getGroupChatReq(String content, Integer[] at, String groupId) {
        GroupChatReq req = new GroupChatReq(content, at, groupId);
        return getPacket(req, MyCommand.GROUP_CHAT_REQ);
    }

    public static TioPacket getPacket(Object body, MyCommand command) {
        byte[] bodyBytes = null;
        if (body != null) {
            bodyBytes = ByteUtils.stringToBytes(JsonUtils.object2String(body), TioPacket.CHARSET);
        }
        short bodyLength = 0;
        if (bodyBytes != null) {
            bodyLength = (short) bodyBytes.length;
        }
        TioPacket packet = new TioPacket();
        packet.setBodyLength(bodyLength);
        packet.setCommand(command.getValue());
        packet.setGzip(TioPacket.GZIP);
        if (bodyBytes != null) {
            packet.setBody(bodyBytes);
        }
        return packet;
    }
}

4、发送“群聊请求消息包”

//组装群聊消息包
TioPacket groupChatReq = MyPacketHolder.getGroupChatReq(
        "hi~ tio-android",//发送的内容
        null,//艾特哪些用户
        EditTextUtils.getString(et_groupId)//群组id
);
//发送消息
mClient.sendPacket(groupChatReq);