HarmonyOS 可以通过其他类中的静态属性，更新本类中的UI吗？

export class DataStore { 
  public currInterval: number = 0; 
  private static instance: DataStore; 
  @Track public test: number =  
  public static getInstance(): DataStore { 
    if (!DataStore.instance) { 
      DataStore.instance = new DataStore(); 
    } 
    return DataStore.instance; 
  } 
  public getRandomVal(): number { 
    const min = 1; 
    const max = 100; 
    const randomInt = Math.floor(Math.random() * (max - min + 1)) + min; 
    return randomInt 
  } 
  public startTime() { 
    this.currInterval = setInterval(() => { 
      this.test = this.getRandomVal() 
    }, 1000) 
  } 
} 
@Entry({ routeName: 'SwiperDemo' }) 
@Component 
export struct SwiperDemo { 
  dataSource: DataStore = DataStore.getInstance() 
  @State test: number = DataStore.getInstance().test 
  @State currInterval: number = 0; 
  aboutToAppear() { 
    // DataStore.getInstance().startTime() 
    this.currInterval = setInterval(() => { 
      this.test = this.dataSource.getRandomVal() 
    }, 1000) 
  } 
  aboutToDisappear() { 
    clearTimeout(this.currInterval); 
  } 
  build() { 
    Text(this.test.toString()).fontSize(30).padding({ top: 50 }) 
      .onClick(() => { 
        this.test = DataStore.getInstance().getRandomVal() 
        console.log('tj startTime') 
      }) 
  } 
}