网易云信自定义消息(类似微信分享界面)

 

首先，我们先定义一个自定义消息的类型

public interface CustomAttachmentType {
    // 多端统一
    int Guess = 1;
    int SnapChat = 2;
    int Sticker = 3;
    int RTS = 4;
    int SHARE  = 5;//自定义
}
第二步，我们先定义一个自定义消息附件的基类，负责解析你的自定义消息的公用字段，比如类型等

注意: 实现 MsgAttachment 接口的成员都要实现 Serializable。（这个类demo里面有的，猜拳用的）

public abstract class CustomAttachment implements MsgAttachment {
    protected int type;
    CustomAttachment(int type) {
        this.type = type;
    }
    public void fromJson(JSONObject data) {
        if (data != null) {
            parseData(data);
        }
    }
    @Override
    public String toJson(boolean send) {
        return CustomAttachParser.packData(type, packData());
    }
    public int getType() {
        return type;
    }
    protected abstract void parseData(JSONObject data);
    protected abstract JSONObject packData();
}

第三步，继承这个基类，实现“分享”的附件类型。注意，成员变量都要实现 Serializable

public class fghGuessAttachment extends CustomAttachment {


private String url = "http://img0.imgtn.bdimg.com/it/u=1737766921,271555379&fm=21&gp=0.jpg";//这个图片没使用，在布局里面放张默认图片
private String content = "内容xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
private String title="标题xxxx";

    protected int type;


    public fghGuessAttachment() {
        super(CustomAttachmentType.SHARE);
    }
    public fghGuessAttachment(String str) {
        this();
    }

    @Override
    protected void parseData(JSONObject data) {
        title=data.getString("title");
        content=data.getString("content");
        url=data.getString("url");
    }

    @Override
    public JSONObject packData() {
        JSONObject data = new JSONObject();
        data.put("title",title);
        data.put("content",content);
        data.put("url",url);
        return data;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }
}
第四步，实现自定义消息的附件解析器。

public class CustomAttachParser implements MsgAttachmentParser {//类里面

case CustomAttachmentType.SHARE:
    attachment = new fghGuessAttachment();
    break;

第五步，将自定义消息展示UI上

viewholder包名下

/**
 * UIKit自定义消息界面用法展示类
 */
public class fghSessionHelper extends MsgViewHolderBase{


    private fghGuessAttachment attachment;
    private ImageView image;
    private TextView tvTitle;
    private TextView tvContent;

    @Override
    protected int getContentResId() {
        return R.layout.aaaaaaaa;
    }

    @Override
    protected void inflateContentView() {
            image = (ImageView) findViewById(R.id.image);
            tvTitle = (TextView) findViewById(R.id.tv_title);
            tvContent = (TextView) findViewById(R.id.tv_content);

    }

    @Override
    protected void bindContentView() {
        attachment = (fghGuessAttachment)message.getAttachment();
        tvTitle.setText(attachment.getTitle());
        tvContent.setText(attachment.getContent());
    }

//若是要自己修改气泡背景
// 当是发送出去的消息时，内容区域背景的drawable id
@Override
protected int rightBackground() {
    return com.netease.nim.uikit.R.drawable.nim_message_item_right_selector2;
}

}

第六步，发送自定义消息

public class fghGuessAction extends BaseAction {

    public fghGuessAction() {
        super(R.drawable.message_plus_guess_selector, R.string.input_panel_share);
    }

    @Override
    public void onClick() {
        fghGuessAttachment attachment = new fghGuessAttachment();
        IMMessage message;
        if (getContainer() != null && getContainer().sessionType == SessionTypeEnum.ChatRoom) {
            message = ChatRoomMessageBuilder.createChatRoomCustomMessage(getAccount(), attachment);
        } else {
            message = MessageBuilder.createCustomMessage(getAccount(), getSessionType(), attachment);
        }

        sendMessage(message);
    }
}

第七步，将该附件解析器注册到 SDK 中。为了保证生成历史消息时能够正确解析自定义附件，注册一般应放在 Application 的 onCreate 中完成

NIMClient.getService(MsgService.class).registerCustomAttachmentParser(new CustomAttachParser()); // 监听的注册，必须在主进程中。

第八步，注册扩展消息类型的显示ViewHolder，由于这里使用我们UIKIT，所以也需要注册到Application的onCreate中

public class SessionHelper {//这个类里面

//fgh
NimUIKit.registerMsgItemViewHolder(fghGuessAttachment.class,fghSessionHelper.class);

第九步，在加号里面增加一个选项 ，Demo是在SessionHelper.java里面，定制的单聊界面。

/**
 * UIKit自定义消息界面用法展示类
 */
public class SessionHelper {

// 定制加号点开后可以包含的操作， 默认已经有图片，视频等消息了
ArrayList<BaseAction> actions = new ArrayList<>();
actions.add(new fghGuessAction());