HarmonyOS 鸿蒙Next 状态更新没有检测到

HarmonyOS 鸿蒙Next 状态更新没有检测到

组件如下:

@Component
export struct TestObservedComponent {

  @Provide('testViewModel') testViewModel: TestViewModel = new TestViewModel()
  aboutToAppear(): void {
    this.testViewModel.currentPoint.time = 1
  }

  build() {
    Column(){
      TestComponent()
    }
  }
}

@Component
struct TestComponent {

  @State knowLedgeList: Point[] = [new Point(1),new Point(2),new Point(3)]
  @Consume('testViewModel') testViewModel: TestViewModel

  build() {
    Column(){
      List() {
        ForEach(this.knowLedgeList, (model: Point, index: number) => {
          ListItem(){
            TestItemComponent({
              point: model,
              currentPoint: this.testViewModel.currentPoint,
              selectPoint: this.selectAction
            })
          }
        })
      }
      .width('100%')
      .height('100%')
      .margin({
        top: 10,
        left:10
      })
    }
  }

  selectAction = (pointModel: Point) => {
    this.testViewModel.changePoint(pointModel)
  }
}

@Component
struct TestItemComponent {
  point: Point = new Point()
  // @Prop currentPoint: Point
  @ObjectLink currentPoint: Point
  selectPoint?: (pointModel: Point) => void

  build() {
    Text(`${this.point.time} - ${this.currentPoint.time}----`)
      .width(100)
      .height(100)
      .onClick(this.onSelectPoint)
  }

  onSelectPoint = () => {
    this.selectPoint?(this.currentPoint)
  }
}

状态变量如下:

@Observed
export class TestViewModel {
  currentPoint: Point = new Point()

  changePoint(pointModel: Point) {
    this.currentPoint = pointModel
  }
}

@Observed
export class Point{
  time: number = 0
  
  constructor(time: number = 0) {
    this.time = time
  }
}

点击更新状态, 没有反应