基于 MultiType(RecyclerView多类型适配器) 

1
implementation 'me.drakeet.multitype:multitype:3.5.0'

创建含有type的Bean类(type可替换为具有区分度的参数)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
public class ChatMsg {
    
    private String msg;
    private int type;

    public void setMsg(String msg) {
        this.msg = msg;
    }
    public String getMsg() {
        return msg;
    }

    public void setType(int type) {
        this.type = type;
    }
    public int getType() {
        return type;
    }
    
}

然后根据Bean类中的type值来区分布局模式

1
2
3
4
5
6
7
8
9
10
11
12
public class ChatRoomBinderLinker implements ClassLinker<ChatMsg> {
    @NonNull
    @Override
    public Class<? extends ItemViewBinder<ChatMsg, ?>> index(int position, @NonNull ChatMsg chatMsg) {
        if (chatMsg.getType() == 1) {
            return ChatRoomMessageBinder.class;
        } else if(chatMsg.getType() == 2) {
            return ChatRoomWelcomeBinder.class;
        }
        return ChatRoomEmptyBinder.class;
    }
}