HarmonyOS 自定义builder方法, 参数是按引用传递, 当状态值修改时, 不触发builder方法, 不会刷新UI

class Tmp {  
  paramA1: string = ''  
}  
  
@Builder function overBuilder(params: Tmp) {  
  Row() {  
    Text(`UseStateVarByReference: ${params.paramA1} `)  
  }  
}  
@Entry  
@Component  
struct Parent {  
  @State label: string = 'Hello';  
  build() {  
    Column() {  
      // Pass the this.label reference to the overBuilder component when the overBuilder component is called in the Parent component.  
      overBuilder({ paramA1: this.label })  
      Button('Click me').onClick(() => {  
        // After Click me is clicked, the UI text changes from Hello to ArkUI.  
        this.label = 'ArkUI';  
      })  
    }  
  }  
}
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.