網易雲信自定義消息(類似微信分享界面)

 

首先，我們先定義一個自定義消息的類型

public interface CustomAttachmentType {
    // 多端統一
 int Guess = 1;
 int SnapChat = 2;
 int Sticker = 3;
 int RTS = 4;
 int SHARE = 5;//自定義
}
第二步，我們先定義一個自定義消息附件的基類，負責解析你的自定義消息的公用字段，比如類型等

注意: 實現 MsgAttachment 接口的成員都要實現 Serializable。（這個類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，繼承這個基類，實現“分享”的附件類型。注意，成員變量都要實現 Serializable

 

public class fghGuessAttachment extends CustomAttachment {


private String url = "http://img0.imgtn.bdimg.com/it/u=1737766921,271555379&fm=21&gp=0.jpg";//這個圖片沒使用，在布局里面放張默認圖片
private String content = "內容xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
private String title="標題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，實現自定義消息的附件解析器。

public class CustomAttachParser implements MsgAttachmentParser {//類里面

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

第五步，將自定義消息展示UI上

viewholder包名下

/**
 * UIKit自定義消息界面用法展示類
 */
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());
 }

//若是要自己修改氣泡背景
// 當是發送出去的消息時，內容區域背景的drawable id
@Override
protected int rightBackground() {
 return com.netease.nim.uikit.R.drawable.nim_message_item_right_selector2;
}

}

第六步，發送自定義消息

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，將該附件解析器注冊到 SDK 中。為了保證生成歷史消息時能夠正確解析自定義附件，注冊一般應放在 Application 的 onCreate 中完成

NIMClient.getService(MsgService.class).registerCustomAttachmentParser(new CustomAttachParser()); // 監聽的注冊，必須在主進程中。

第八步，注冊擴展消息類型的顯示ViewHolder，由於這里使用我們UIKIT，所以也需要注冊到Application的onCreate中

public class SessionHelper {//這個類里面

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

第九步，在加號里面增加一個選項 ，Demo是在SessionHelper.java里面，定制的單聊界面。

/**
 * UIKit自定義消息界面用法展示類
 */
public class SessionHelper {

// 定制加號點開后可以包含的操作， 默認已經有圖片，視頻等消息了
ArrayList<BaseAction> actions = new ArrayList<>();
actions.add(new fghGuessAction());