使用@State修饰的数组对象，改变其中的某个对象的变量，自定义组件中的UI没有跟着刷新

//（1）对象使用@Observed装饰器    
@Observed
export class Score {
  score: number = 0
  constructor(score: number) {
    this.score = score
  }
}
@Component
export struct ScoreItemView {
//（2）在自定义组件中使用@ObjectLink装饰器修饰需要动态改变的对象
  @ObjectLink score: Score

  build() {
    Row() {
      Text(this.score.score + "")
        .textAlign(TextAlign.Center)
        .fontSize(20)
        .margin(10)
        .layoutWeight(1)
    }.width("100%")
  }
}

@Entry
@Component
struct Index {
  @State scores: Score[] = [new Score(1), new Score(1), new Score(1)]

  aboutToAppear(): void {
  }

  build() {
    Column() {
      List() {
        ForEach(this.scores, (e: Score) => {
          ListItem() {
            ScoreItemView({score:e})
          }
        })
      }
      Button("+1").onClick(()=>{
        this.scores[0].score++//点击动态改变score的值
      })
    }.height("100%")
    .alignItems(HorizontalAlign.Center)
    .justifyContent(FlexAlign.Center)
  }
}