## 2022.10.12  
### OneDayDay
+ 修改UI updatedevice页面<br>
+ 编写服务端datasource接口<br>
### The Problem
problem:The operator != is undefined for the argument type(s) int,nullJava(536871072)<br>
- Before/after modification<br>
```JAVA
public int getId() {                     public Integer getId() {<br>
    return id;                 ==>               return id;<br>
}                                            }